TY  - CONF
AU  - Stevanović, Nevena
AU  - Lipovac, Aleksa
AU  - Zornić, Vladimir
AU  - Životić, Ljubomir
AU  - Djurović, Nevenka
AU  - Stričević, Ružica
PY  - 2022
UR  - https://zenodo.org/records/5035248
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6677
AB  - INTRODUCTION and OBJECTIVES: Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance, and in a narrower sense includes the analysis and interpretation of various images of parts of the Earth's surface. The application of satellite images with modern technology and software is possible in all phases of research of various natural phenomena, and their analysis are carried out by computer-aided and visual procedures. The aim of this research is to present the basic aspects of remote sensing and modern technologies in assessing the water supply of natural grasslands, as well as the presentation of possibility for faster data collection while reducing costs, and easier understanding of the whole research area.
MATERIAL and METHOD: The trial was set on March 22nd of 2022 on a natural grassland in the village of Mitrovo polje on the mountain Goč (43° 30′ 22′ N latitude, 20° 52′ 26′ E longitude, 700 m a.s.l.) in the Aleksandrovac municipality. Disturbed and undisturbed soil samples were collected to determine soil texture, soil water retention characteristics and soil chemical properties. Continuous measurement of soil moisture was performed with TDR probes in three replicates and sensors for monitoring soil temperature were installed. The satellite images (SENTINEL 2) with a resolution 10 m, in a time interval of about a week, created in relatively clear weather (cloudiness <30%), starting from March 22 to May 21st were used,
while soil moisture data were collected on a daily basis. Data on precipitation and air temperature for the observed period were taken from the Agrosens portal. The supply of natural grassland with water and assessment of soil moisture are determined by the index of normalized difference vegetation index (NDVI), as the most applicable vegetation index. NDVI is defined as the ratio of differences between individual values of reflective wavelengths of near red and red radiation spectrum and their sum. Furthermore, for the
analysis are also used MSAVI2 index, which is mainly used to analyse plant growth, estimate grass yield, monitor drought and soil erosion, and the optimized soil-adapted vegetation index (OSAVI), which is more sensitive to vegetation. The analysis of remotely sensed images of the investigated area and statistical analysis were conducted using QGIS tools.
RESULTS and CONCLUSIONS: The results of the research show that from the beginning of grassland growth, the soil moisture ranged from 39% to 57%, which indicates that the lawn was well supplied with water. Water consumption was low at initial stage of grass growth. Soil water content at that period was high due to subsurface inflow coming from the higher parts of the terrain. The values of the NDVI index varied from 0.16 to 0.47, while the values for the MSAVI2 and OSAVI index ranged from 0.59-0.73 and
0.24-0.63, respectively. Lower index values at the beginning of the observed period (<0.16, <0.32, <0.30 for NDVI, MSAVI2 OSAVI, respectively) indicate a lack of green biomass. As the growth of natural grass increased, so do the values of all indices. Nevertheless, the obtained results show the changes of vegetation indices with the change of soil moisture, i.e. the values of the index increase due to the increase of soil
moisture after precipitation and vice versa, which leads us to the conclusion that the application of remote sensing indices can be successfull for the estimate of different vegetation conditions, detection ofsoil moisture and biomass assessment.
T1  - Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6677
ER  - 

@conference{
author = "Stevanović, Nevena and Lipovac, Aleksa and Zornić, Vladimir and Životić, Ljubomir and Djurović, Nevenka and Stričević, Ružica",
year = "2022",
abstract = "INTRODUCTION and OBJECTIVES: Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance, and in a narrower sense includes the analysis and interpretation of various images of parts of the Earth's surface. The application of satellite images with modern technology and software is possible in all phases of research of various natural phenomena, and their analysis are carried out by computer-aided and visual procedures. The aim of this research is to present the basic aspects of remote sensing and modern technologies in assessing the water supply of natural grasslands, as well as the presentation of possibility for faster data collection while reducing costs, and easier understanding of the whole research area.
MATERIAL and METHOD: The trial was set on March 22nd of 2022 on a natural grassland in the village of Mitrovo polje on the mountain Goč (43° 30′ 22′ N latitude, 20° 52′ 26′ E longitude, 700 m a.s.l.) in the Aleksandrovac municipality. Disturbed and undisturbed soil samples were collected to determine soil texture, soil water retention characteristics and soil chemical properties. Continuous measurement of soil moisture was performed with TDR probes in three replicates and sensors for monitoring soil temperature were installed. The satellite images (SENTINEL 2) with a resolution 10 m, in a time interval of about a week, created in relatively clear weather (cloudiness <30%), starting from March 22 to May 21st were used,
while soil moisture data were collected on a daily basis. Data on precipitation and air temperature for the observed period were taken from the Agrosens portal. The supply of natural grassland with water and assessment of soil moisture are determined by the index of normalized difference vegetation index (NDVI), as the most applicable vegetation index. NDVI is defined as the ratio of differences between individual values of reflective wavelengths of near red and red radiation spectrum and their sum. Furthermore, for the
analysis are also used MSAVI2 index, which is mainly used to analyse plant growth, estimate grass yield, monitor drought and soil erosion, and the optimized soil-adapted vegetation index (OSAVI), which is more sensitive to vegetation. The analysis of remotely sensed images of the investigated area and statistical analysis were conducted using QGIS tools.
RESULTS and CONCLUSIONS: The results of the research show that from the beginning of grassland growth, the soil moisture ranged from 39% to 57%, which indicates that the lawn was well supplied with water. Water consumption was low at initial stage of grass growth. Soil water content at that period was high due to subsurface inflow coming from the higher parts of the terrain. The values of the NDVI index varied from 0.16 to 0.47, while the values for the MSAVI2 and OSAVI index ranged from 0.59-0.73 and
0.24-0.63, respectively. Lower index values at the beginning of the observed period (<0.16, <0.32, <0.30 for NDVI, MSAVI2 OSAVI, respectively) indicate a lack of green biomass. As the growth of natural grass increased, so do the values of all indices. Nevertheless, the obtained results show the changes of vegetation indices with the change of soil moisture, i.e. the values of the index increase due to the increase of soil
moisture after precipitation and vice versa, which leads us to the conclusion that the application of remote sensing indices can be successfull for the estimate of different vegetation conditions, detection ofsoil moisture and biomass assessment.",
title = "Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6677"
}

Stevanović, N., Lipovac, A., Zornić, V., Životić, L., Djurović, N.,& Stričević, R.. (2022). Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka. .
https://hdl.handle.net/21.15107/rcub_agrospace_6677

Stevanović N, Lipovac A, Zornić V, Životić L, Djurović N, Stričević R. Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka. 2022;.
https://hdl.handle.net/21.15107/rcub_agrospace_6677 .

Stevanović, Nevena, Lipovac, Aleksa, Zornić, Vladimir, Životić, Ljubomir, Djurović, Nevenka, Stričević, Ružica, "Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka" (2022),
https://hdl.handle.net/21.15107/rcub_agrospace_6677 .

TY  - CONF
AU  - Stevanović, Nevena
AU  - Lipovac, Aleksa
AU  - Zornić, Vladimir
AU  - Životić, Ljubomir
AU  - Đurović, Nevenka
AU  - Stričević, Ružica
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6683
AB  - УВОД и ЦИЉЕВИ: Даљинска детекција је поступак откривања и праћења физичких карактеристика подручја мерењем његовог одбијеног и емитованог зрачења на даљину, а у ужем
смислу обухвата анализу и интерпретацију различитих снимака делова Земљине површине. Примена сателитских снимака уз савремену технологију и програмску подршку могућа је у свим
фазама истраживања различитих природних појава, а њихова анализа се спроводи рачунарски подржаним и визуелним поступцима. Циљ овог истраживања је да се представе основни аспекти
примене даљинске детекције и савремених технологија при процени снабдевености природних травњака водом, као и могућност бржег прикупљања података уз смањење трошкова и лакше сагледавање целине истраживаног подручја.
МАТЕРИЈАЛ и МЕТОД: Оглед је постављен 22.03.2022. на природном травњаку у селу Митрово поље на планини Гоч (43° 30ʹ 22ʺ с.г.ш. и 20° 52ʹ 26ʺ и.г.д., 700 m н.в.), општина Александровац. На терену су узети узорци земљишта у поремећеном и непоремећеном стању како би се одредио механички састав, водне константе као и поједине хемијске особине земљишта. Континуално мерење влажности земљишта обављено je TDR сондама у три понављања и постављени су сензори
за праћење температуре земљишта. У раду су коришћени сателитски снимци (SENTINEL 2), резолуције 10m, у временском интервалу од око недељу дана, направљени при релативно ведром времену (облачност <30 %), почевши од 22. марта до 21. маја, док је влажност земљишта одређивана на дневном нивоу у истом периоду. Са портала Agrosens преузети су подаци о падавинама и температури ваздуха за посматрани период. Снабдевеност природних травњака водом и процена стања влажности земљишта одређена је индексима нормализоване разлике индекса вегетације (NDVI), као најчешће коришћеним индексом стања вегетације и дефинише се као однос разлика између појединих вредности рефлектујућих таласних дужина – одбијања блиско црвеног и црвеног спектра зрачења и њихове суме, затим индекс MSAVI2, који се углавном користи у анализи раста
биљака, при процени приноса травњака, праћењу суше и ерозије тла, док је оптимизовани вегетациони индекс прилагођен тлу (OSAVI) осетљивији на вегетацију. Анализа снимака за креирани полигон истраживаног подручја и статистичка анализа урађена је помоћу QGIS алата. 
РЕЗУЛТАТИ и ЗАКЉУЧЦИ: Резултати истраживања показују да се од почетка вегетативног раста влажност земљишта кретала од 39% до 57% што указује да је травњак био добро снабдевен водом. Потрошња воде била је мања од прилива воде доспеле услед потповршинског дотицаја са виших делова терена. Вредности индекса NDVI варирале су од 0,16 до 0,47 док су се вредности за MSAVI2 и OSAVI индекс кретале од 0,59-0,73 односно 0,24-0,63. Ниже вредности индекса на почетку посматраног периода (<0,16, <0,32, <0,30 за NDVI, MSAVI2 OSAVI, редом) указују на недостатак зелене биомасе. Кретањем раста природног травњака, расту и вредности свих индекса. Потом,
добијени резултати показују како се вегетациони индекси мењају са променом влажности земљишта, односно како се услед повећања влажности земљишта због падавина повећавају и вредности индекса
и супротно, што нас доводи до закључка да коришћењем индекса добијених из сателитских снимака успешно можемо проценити различита вегетациона стања, детектовати влагу у земљишту и процену биомасе.
PB  - Пољопривредни факултет Нови Сад
C3  - Simpozijum: ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022'', 16–17. Jun 2022. godine, Novi Sad. Knjiga sažetaka, str. 28–29.
T1  - Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka
SP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6683
ER  - 

@conference{
author = "Stevanović, Nevena and Lipovac, Aleksa and Zornić, Vladimir and Životić, Ljubomir and Đurović, Nevenka and Stričević, Ružica",
year = "2022",
abstract = "УВОД и ЦИЉЕВИ: Даљинска детекција је поступак откривања и праћења физичких карактеристика подручја мерењем његовог одбијеног и емитованог зрачења на даљину, а у ужем
смислу обухвата анализу и интерпретацију различитих снимака делова Земљине површине. Примена сателитских снимака уз савремену технологију и програмску подршку могућа је у свим
фазама истраживања различитих природних појава, а њихова анализа се спроводи рачунарски подржаним и визуелним поступцима. Циљ овог истраживања је да се представе основни аспекти
примене даљинске детекције и савремених технологија при процени снабдевености природних травњака водом, као и могућност бржег прикупљања података уз смањење трошкова и лакше сагледавање целине истраживаног подручја.
МАТЕРИЈАЛ и МЕТОД: Оглед је постављен 22.03.2022. на природном травњаку у селу Митрово поље на планини Гоч (43° 30ʹ 22ʺ с.г.ш. и 20° 52ʹ 26ʺ и.г.д., 700 m н.в.), општина Александровац. На терену су узети узорци земљишта у поремећеном и непоремећеном стању како би се одредио механички састав, водне константе као и поједине хемијске особине земљишта. Континуално мерење влажности земљишта обављено je TDR сондама у три понављања и постављени су сензори
за праћење температуре земљишта. У раду су коришћени сателитски снимци (SENTINEL 2), резолуције 10m, у временском интервалу од око недељу дана, направљени при релативно ведром времену (облачност <30 %), почевши од 22. марта до 21. маја, док је влажност земљишта одређивана на дневном нивоу у истом периоду. Са портала Agrosens преузети су подаци о падавинама и температури ваздуха за посматрани период. Снабдевеност природних травњака водом и процена стања влажности земљишта одређена је индексима нормализоване разлике индекса вегетације (NDVI), као најчешће коришћеним индексом стања вегетације и дефинише се као однос разлика између појединих вредности рефлектујућих таласних дужина – одбијања блиско црвеног и црвеног спектра зрачења и њихове суме, затим индекс MSAVI2, који се углавном користи у анализи раста
биљака, при процени приноса травњака, праћењу суше и ерозије тла, док је оптимизовани вегетациони индекс прилагођен тлу (OSAVI) осетљивији на вегетацију. Анализа снимака за креирани полигон истраживаног подручја и статистичка анализа урађена је помоћу QGIS алата. 
РЕЗУЛТАТИ и ЗАКЉУЧЦИ: Резултати истраживања показују да се од почетка вегетативног раста влажност земљишта кретала од 39% до 57% што указује да је травњак био добро снабдевен водом. Потрошња воде била је мања од прилива воде доспеле услед потповршинског дотицаја са виших делова терена. Вредности индекса NDVI варирале су од 0,16 до 0,47 док су се вредности за MSAVI2 и OSAVI индекс кретале од 0,59-0,73 односно 0,24-0,63. Ниже вредности индекса на почетку посматраног периода (<0,16, <0,32, <0,30 за NDVI, MSAVI2 OSAVI, редом) указују на недостатак зелене биомасе. Кретањем раста природног травњака, расту и вредности свих индекса. Потом,
добијени резултати показују како се вегетациони индекси мењају са променом влажности земљишта, односно како се услед повећања влажности земљишта због падавина повећавају и вредности индекса
и супротно, што нас доводи до закључка да коришћењем индекса добијених из сателитских снимака успешно можемо проценити различита вегетациона стања, детектовати влагу у земљишту и процену биомасе.",
publisher = "Пољопривредни факултет Нови Сад",
journal = "Simpozijum: ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022'', 16–17. Jun 2022. godine, Novi Sad. Knjiga sažetaka, str. 28–29.",
title = "Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka",
pages = "38",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6683"
}

Stevanović, N., Lipovac, A., Zornić, V., Životić, L., Đurović, N.,& Stričević, R.. (2022). Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka. in Simpozijum: ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022'', 16–17. Jun 2022. godine, Novi Sad. Knjiga sažetaka, str. 28–29.
Пољопривредни факултет Нови Сад., 38.
https://hdl.handle.net/21.15107/rcub_agrospace_6683

Stevanović N, Lipovac A, Zornić V, Životić L, Đurović N, Stričević R. Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka. in Simpozijum: ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022'', 16–17. Jun 2022. godine, Novi Sad. Knjiga sažetaka, str. 28–29.. 2022;:38.
https://hdl.handle.net/21.15107/rcub_agrospace_6683 .

Stevanović, Nevena, Lipovac, Aleksa, Zornić, Vladimir, Životić, Ljubomir, Đurović, Nevenka, Stričević, Ružica, "Procena snabdevenosti prirodnih travnjaka vodom primenom vremenske serije satelitskih snimaka" in Simpozijum: ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022'', 16–17. Jun 2022. godine, Novi Sad. Knjiga sažetaka, str. 28–29. (2022):38,
https://hdl.handle.net/21.15107/rcub_agrospace_6683 .

TY  - JOUR
AU  - Petrović, Mirjana
AU  - Sokolović, Dejan
AU  - Babić, Snežana
AU  - Vymyslický, Tomáš
AU  - Marković, Jordan
AU  - Zornić, Vladimir
AU  - Dajić-Stevanović, Zora
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5893
AB  - The content of daidzein, genistein, formononetin, and biochanin A isoflavones was studied in natural populations of red and Hungarian clover, to estimate their impact on fodder quality and to determine directions in possible breeding programs. The study included 6 red clover (Trifolium pratense) and 6 Hungarian clover (Trifolium pannonicum) populations, collected in the central Balkans. The differences between the species and among the populations were analysed. The average content of total isoflavones was 1.393 mg g–1 and 0.487 mg g–1 of air dry matter in Hungarian clover, respectively. While the most prevailed isoflavone in red clover was biochanin A (46%), the Hungarian clover populations were rich in genistein (43%). The red clover leaves accumulated the highest content of isoflavones. The Hungarian clover flowers and leaves had an equal amount of isoflavones. The obtained values of the total isoflavones could not affect the overall nutrient quality and therefore, researched natural populations of two clover species could be considered for further breeding programs.
PB  - Czech Academy of Agricultural Sciences
T2  - Czech Journal of Food Sciences
T1  - Isoflavones of the red and Hungarian clover and possible  impact on animal diet
EP  - 175
IS  - 3
SP  - 169
VL  - 39
DO  - 10.17221/27/2020-CJFS
ER  - 

@article{
author = "Petrović, Mirjana and Sokolović, Dejan and Babić, Snežana and Vymyslický, Tomáš and Marković, Jordan and Zornić, Vladimir and Dajić-Stevanović, Zora",
year = "2021",
abstract = "The content of daidzein, genistein, formononetin, and biochanin A isoflavones was studied in natural populations of red and Hungarian clover, to estimate their impact on fodder quality and to determine directions in possible breeding programs. The study included 6 red clover (Trifolium pratense) and 6 Hungarian clover (Trifolium pannonicum) populations, collected in the central Balkans. The differences between the species and among the populations were analysed. The average content of total isoflavones was 1.393 mg g–1 and 0.487 mg g–1 of air dry matter in Hungarian clover, respectively. While the most prevailed isoflavone in red clover was biochanin A (46%), the Hungarian clover populations were rich in genistein (43%). The red clover leaves accumulated the highest content of isoflavones. The Hungarian clover flowers and leaves had an equal amount of isoflavones. The obtained values of the total isoflavones could not affect the overall nutrient quality and therefore, researched natural populations of two clover species could be considered for further breeding programs.",
publisher = "Czech Academy of Agricultural Sciences",
journal = "Czech Journal of Food Sciences",
title = "Isoflavones of the red and Hungarian clover and possible  impact on animal diet",
pages = "175-169",
number = "3",
volume = "39",
doi = "10.17221/27/2020-CJFS"
}

Petrović, M., Sokolović, D., Babić, S., Vymyslický, T., Marković, J., Zornić, V.,& Dajić-Stevanović, Z.. (2021). Isoflavones of the red and Hungarian clover and possible  impact on animal diet. in Czech Journal of Food Sciences
Czech Academy of Agricultural Sciences., 39(3), 169-175.
https://doi.org/10.17221/27/2020-CJFS

Petrović M, Sokolović D, Babić S, Vymyslický T, Marković J, Zornić V, Dajić-Stevanović Z. Isoflavones of the red and Hungarian clover and possible  impact on animal diet. in Czech Journal of Food Sciences. 2021;39(3):169-175.
doi:10.17221/27/2020-CJFS .

Petrović, Mirjana, Sokolović, Dejan, Babić, Snežana, Vymyslický, Tomáš, Marković, Jordan, Zornić, Vladimir, Dajić-Stevanović, Zora, "Isoflavones of the red and Hungarian clover and possible  impact on animal diet" in Czech Journal of Food Sciences, 39, no. 3 (2021):169-175,
https://doi.org/10.17221/27/2020-CJFS . .

TY  - JOUR
AU  - Sokolović, Dejan
AU  - Babić, Snežana
AU  - Radović, Jasmina
AU  - Lugić, Zoran
AU  - Simić, Aleksandar
AU  - Zornić, Vladimir
AU  - Petrović, Mirjana
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4569
AB  - Due to historical BACKGROUND:  of vegetation development, geographical position, climate and relief, Serbia represents one of the 158 world biodiversity centres, based upon the number of plant species and territory size (biodiversity index 0.72). Large areas in Serbia are under natural grasslands and pastures, composed of forage grass species, and important as source of natural plant genetic diversity and germplasm for breeding. These eco-systems represent basic prerequisites for sustainable forage production, but very low potential of them is utilized and genetic resources are not protected. Family Poaceae is present in Serbia flora with 70 genera and among them from the aspect of forage production and quality, the most important are perennial Festuca, Lolium, Dactylis, Phleum, Bromus, Arrhenatherum, Poa and Agrostis species. Most of these grasses have been bred in Serbia and lot of cultivars were released. These cultivars contain autochthonous Serbian material and represent great and important resource of genetic variability. Therefore, collecting of new samples which are acclimatised to local eco-geographical conditions and including them in plant ex situ gene bank is of exceptional importance for further utilization in different plant breeding programmes as well as genetic resources protection. These autochthonous populations have natural variability and very often have satisfactory yielding performance in comparison with introduced cultivars, which referred them for direct phenotypic selection for cultivars release. Broadening of forage grasses genotypes collection is permanent objective of Serbian scientists. Collected accessions are being characterized and evaluated for important phenological, morphological and agronomical traits. In this paper genetic resources of forage grass species, their diversity and potentials, state of the grasses gene banks, as well as possibility for breeding of new cultivars has been analysed.
AB  - Zahvaljujući svojoj geografskoj poziciji, klimi i reljefu, Srbija po broju biljnih vrsta i veličini teritorije (indeks biodiverziteta 0,72), predstavlja jedan od 158 svetskih centara biodiverziteta. Prirodne livade i pašnjaci zauzimaju značajne površine u Srbiji, veoma su bogate krmnim travnim vrstama i predstavljaju važan izvor germplazme za proces oplemenjivanja. Ovi ekosistemi predstavljaju osnovu za održivu stočarsku proizvodnju, pa iako se relativno male površine intenzivno koriste, javlja se potreba za očuvanjem postojećih, izuzetno bogatih, genetičkih resursa. Familija Poaceae je zastupljena u flori Srbije sa 70 rodova, a među njima, sa aspekta proizvodnje kvalitetne stočne hrane, najvažnije su vrste rodova Festuca, Lolium, Dactylis, Phleum, Bromus, Arrhenatherum, Poa i Agrostis. Veliki broj vrsta navedenih rodova je uključen u proces oplemenjivanja, a početni material za brojne registrovane sorte su bile uglavnom autohtone populacije, koje se odlikuju visokom varijabilnošću za mnoge osobine. Prikupljanje novih uzoraka, koji su tolerantni na lokalne eko-geografske uslove i njihovo uključivanje u biljnu banku gena, je od velikog značaja za dalje iskorišćavanje u različitim oplemenjivačkim programima, pa je stalno proširenje postojeće kolekcije krmnih trava permanentna aktivnost oplemenjivača u Srbiji. Prirodne populacije imaju visoku varijabilnost i veoma često zadovoljavajuće komponente prinosa u odnosu na postojeće sorte, što ih nakon karakterizacije i evaluacije važnih fenoloških, morfoloških i agronomskih osobina, preporučuje za direktno uključivanje u process selekcije. U ovom radu su predstavljeni genetički resursi krmnih trava, njihova divergentnost i potencijal, stanje u banci gena, kao i mogućnost kreiranja novih sorti.
PB  - Društvo selekcionara i semenara Republike Srbije, Beograd
T2  - Selekcija i semenarstvo
T1  - Genetic resources of perennial forage grasses in Serbia: Current state, broadening and evaluation
T1  - Genetički resursi višegodišnjih krmnih trava u Srbiji - trenutno stanje, proširenje i evaluacija
EP  - 82
IS  - 1
SP  - 69
VL  - 23
DO  - 10.5937/SelSem1701069S
ER  - 

@article{
author = "Sokolović, Dejan and Babić, Snežana and Radović, Jasmina and Lugić, Zoran and Simić, Aleksandar and Zornić, Vladimir and Petrović, Mirjana",
year = "2017",
abstract = "Due to historical BACKGROUND:  of vegetation development, geographical position, climate and relief, Serbia represents one of the 158 world biodiversity centres, based upon the number of plant species and territory size (biodiversity index 0.72). Large areas in Serbia are under natural grasslands and pastures, composed of forage grass species, and important as source of natural plant genetic diversity and germplasm for breeding. These eco-systems represent basic prerequisites for sustainable forage production, but very low potential of them is utilized and genetic resources are not protected. Family Poaceae is present in Serbia flora with 70 genera and among them from the aspect of forage production and quality, the most important are perennial Festuca, Lolium, Dactylis, Phleum, Bromus, Arrhenatherum, Poa and Agrostis species. Most of these grasses have been bred in Serbia and lot of cultivars were released. These cultivars contain autochthonous Serbian material and represent great and important resource of genetic variability. Therefore, collecting of new samples which are acclimatised to local eco-geographical conditions and including them in plant ex situ gene bank is of exceptional importance for further utilization in different plant breeding programmes as well as genetic resources protection. These autochthonous populations have natural variability and very often have satisfactory yielding performance in comparison with introduced cultivars, which referred them for direct phenotypic selection for cultivars release. Broadening of forage grasses genotypes collection is permanent objective of Serbian scientists. Collected accessions are being characterized and evaluated for important phenological, morphological and agronomical traits. In this paper genetic resources of forage grass species, their diversity and potentials, state of the grasses gene banks, as well as possibility for breeding of new cultivars has been analysed., Zahvaljujući svojoj geografskoj poziciji, klimi i reljefu, Srbija po broju biljnih vrsta i veličini teritorije (indeks biodiverziteta 0,72), predstavlja jedan od 158 svetskih centara biodiverziteta. Prirodne livade i pašnjaci zauzimaju značajne površine u Srbiji, veoma su bogate krmnim travnim vrstama i predstavljaju važan izvor germplazme za proces oplemenjivanja. Ovi ekosistemi predstavljaju osnovu za održivu stočarsku proizvodnju, pa iako se relativno male površine intenzivno koriste, javlja se potreba za očuvanjem postojećih, izuzetno bogatih, genetičkih resursa. Familija Poaceae je zastupljena u flori Srbije sa 70 rodova, a među njima, sa aspekta proizvodnje kvalitetne stočne hrane, najvažnije su vrste rodova Festuca, Lolium, Dactylis, Phleum, Bromus, Arrhenatherum, Poa i Agrostis. Veliki broj vrsta navedenih rodova je uključen u proces oplemenjivanja, a početni material za brojne registrovane sorte su bile uglavnom autohtone populacije, koje se odlikuju visokom varijabilnošću za mnoge osobine. Prikupljanje novih uzoraka, koji su tolerantni na lokalne eko-geografske uslove i njihovo uključivanje u biljnu banku gena, je od velikog značaja za dalje iskorišćavanje u različitim oplemenjivačkim programima, pa je stalno proširenje postojeće kolekcije krmnih trava permanentna aktivnost oplemenjivača u Srbiji. Prirodne populacije imaju visoku varijabilnost i veoma često zadovoljavajuće komponente prinosa u odnosu na postojeće sorte, što ih nakon karakterizacije i evaluacije važnih fenoloških, morfoloških i agronomskih osobina, preporučuje za direktno uključivanje u process selekcije. U ovom radu su predstavljeni genetički resursi krmnih trava, njihova divergentnost i potencijal, stanje u banci gena, kao i mogućnost kreiranja novih sorti.",
publisher = "Društvo selekcionara i semenara Republike Srbije, Beograd",
journal = "Selekcija i semenarstvo",
title = "Genetic resources of perennial forage grasses in Serbia: Current state, broadening and evaluation, Genetički resursi višegodišnjih krmnih trava u Srbiji - trenutno stanje, proširenje i evaluacija",
pages = "82-69",
number = "1",
volume = "23",
doi = "10.5937/SelSem1701069S"
}

Sokolović, D., Babić, S., Radović, J., Lugić, Z., Simić, A., Zornić, V.,& Petrović, M.. (2017). Genetic resources of perennial forage grasses in Serbia: Current state, broadening and evaluation. in Selekcija i semenarstvo
Društvo selekcionara i semenara Republike Srbije, Beograd., 23(1), 69-82.
https://doi.org/10.5937/SelSem1701069S

Sokolović D, Babić S, Radović J, Lugić Z, Simić A, Zornić V, Petrović M. Genetic resources of perennial forage grasses in Serbia: Current state, broadening and evaluation. in Selekcija i semenarstvo. 2017;23(1):69-82.
doi:10.5937/SelSem1701069S .

Sokolović, Dejan, Babić, Snežana, Radović, Jasmina, Lugić, Zoran, Simić, Aleksandar, Zornić, Vladimir, Petrović, Mirjana, "Genetic resources of perennial forage grasses in Serbia: Current state, broadening and evaluation" in Selekcija i semenarstvo, 23, no. 1 (2017):69-82,
https://doi.org/10.5937/SelSem1701069S . .

TY  - JOUR
AU  - Petrović, Mirjana
AU  - Stanković, Milan S.
AU  - Andjelković, Bojan S.
AU  - Babić, Snežana
AU  - Zornić, Vladimir
AU  - Vasiljević, Sanja
AU  - Dajić-Stevanović, Zora
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4182
AB  - Products of metabolism that are directly involved in growth, development and reproduction and also secondary products of metabolism were studied in 16 natural populations of three species of the genus Trifolium (T. repens - four populations, T. alpestre - three populations, T. pannonicum - nine populations), collected from the central Balkans region, i.e. territory of Serbia. Statistical analysis showed the presence of variability in all species of the test material. The best quality of dry matter, estimated by the ratio of crude protein and crude fiber, was achieved in the populations of white clover. In this species, average protein content was 216.4 g kg(-1) while the average content of crude fiber was 222.4 g kg(-1). The highest average content of total phenols (77.9 mg GA g(-1)), flavonoids (159.7 mg Ru g(-1)) and antioxidant activity (70.2 mu g ml(-1)) was measured in populations of T. pannonicum by phytochemical analysis of aerial parts of plants. The content of secondary metabolites and antioxidant activity in other species were extremely low. Populations of T. pannonicum were notable for fodder quality and antioxidant activity: CS091 with 186.2 g kg(-1) of crude protein and antioxidant activity of 55 mu g ml(-1); RA123 with 175.6 g kg(-1) of crude protein and a high level of antioxidant activity of 44.8 mu g ml(-1). It can be concluded that the selection of these populations may lead to creation of different varieties of fodder crops that could give safe animal feed and would be suitable for growing under adverse conditions of mountainous climate.
PB  - Univ Agr Sci & Veterinary Med Cluj-Napoca, Cluj-Napoca
T2  - NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA
T1  - Quality Parameters and Antioxidant Activity of Three Clover Species in Relation to the Livestock Diet
EP  - 208
IS  - 1
SP  - 201
VL  - 44
DO  - 10.15835/nbha44110144
ER  - 

@article{
author = "Petrović, Mirjana and Stanković, Milan S. and Andjelković, Bojan S. and Babić, Snežana and Zornić, Vladimir and Vasiljević, Sanja and Dajić-Stevanović, Zora",
year = "2016",
abstract = "Products of metabolism that are directly involved in growth, development and reproduction and also secondary products of metabolism were studied in 16 natural populations of three species of the genus Trifolium (T. repens - four populations, T. alpestre - three populations, T. pannonicum - nine populations), collected from the central Balkans region, i.e. territory of Serbia. Statistical analysis showed the presence of variability in all species of the test material. The best quality of dry matter, estimated by the ratio of crude protein and crude fiber, was achieved in the populations of white clover. In this species, average protein content was 216.4 g kg(-1) while the average content of crude fiber was 222.4 g kg(-1). The highest average content of total phenols (77.9 mg GA g(-1)), flavonoids (159.7 mg Ru g(-1)) and antioxidant activity (70.2 mu g ml(-1)) was measured in populations of T. pannonicum by phytochemical analysis of aerial parts of plants. The content of secondary metabolites and antioxidant activity in other species were extremely low. Populations of T. pannonicum were notable for fodder quality and antioxidant activity: CS091 with 186.2 g kg(-1) of crude protein and antioxidant activity of 55 mu g ml(-1); RA123 with 175.6 g kg(-1) of crude protein and a high level of antioxidant activity of 44.8 mu g ml(-1). It can be concluded that the selection of these populations may lead to creation of different varieties of fodder crops that could give safe animal feed and would be suitable for growing under adverse conditions of mountainous climate.",
publisher = "Univ Agr Sci & Veterinary Med Cluj-Napoca, Cluj-Napoca",
journal = "NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA",
title = "Quality Parameters and Antioxidant Activity of Three Clover Species in Relation to the Livestock Diet",
pages = "208-201",
number = "1",
volume = "44",
doi = "10.15835/nbha44110144"
}

Petrović, M., Stanković, M. S., Andjelković, B. S., Babić, S., Zornić, V., Vasiljević, S.,& Dajić-Stevanović, Z.. (2016). Quality Parameters and Antioxidant Activity of Three Clover Species in Relation to the Livestock Diet. in NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA
Univ Agr Sci & Veterinary Med Cluj-Napoca, Cluj-Napoca., 44(1), 201-208.
https://doi.org/10.15835/nbha44110144

Petrović M, Stanković MS, Andjelković BS, Babić S, Zornić V, Vasiljević S, Dajić-Stevanović Z. Quality Parameters and Antioxidant Activity of Three Clover Species in Relation to the Livestock Diet. in NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA. 2016;44(1):201-208.
doi:10.15835/nbha44110144 .

Petrović, Mirjana, Stanković, Milan S., Andjelković, Bojan S., Babić, Snežana, Zornić, Vladimir, Vasiljević, Sanja, Dajić-Stevanović, Zora, "Quality Parameters and Antioxidant Activity of Three Clover Species in Relation to the Livestock Diet" in NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA, 44, no. 1 (2016):201-208,
https://doi.org/10.15835/nbha44110144 . .

TY  - JOUR
AU  - Petrović, M.
AU  - Aćić, Svetlana
AU  - Zornić, Vladimir
AU  - Andjelković, B.
AU  - Dajić-Stevanović, Zora
AU  - Babić, S.
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3209
AB  - The aim of this paper is to present a numeric-statistical model by which it is possible to evaluate the quality of the observed grassland upon floristic and vegetation assessment. Thanks to this new methodological approach, the impact of each individual plant species on overall quality of the grassland could be estimated. The main goal was to determine species which significantly determine the pastoral value of the grassland. The quality (pastoral value) of the grassland was calculated using the numerical values of quality index of each individual species of each relevé of the community. For testing this numerical method, the total of 11 relevés of 4 grassland communities of hilly-mountainous area of Mt. Kopaonik was used. Analyzed vegetation includes previously unpublished phytocenological relevés as result of our own field research. All analyzed relevés were obtained using the method of the Swiss-French phytocenological school. The results showed that the best and the worst quality were determined for the ass. Festuco-Brometum erectii, and the ass. Nardetum strictae, respectively. Species that highly contributed to good and bad quality of grassland were Arrhenatherum elatius, Festuca rubra, Dactylis glomerata, Trifolium repens, etc., and Carduus alpestris, Hieracium hoppeanum, Ornithogalum umbelatum, respectively.
AB  - Travnjaci predstavljaju jedan od najznačajnijih prirodnih resursa; na teritoriji Srbije obuhvataju oko 1.400.000 ha. Koriste se kao izvor stočne hrane ali i kao resurs materija koje se primenjuju u farmaceutskoj industriji. Uzimajući u obzir njihov veliki značaj istraživanja na travnjacima u svrhu ispitivanja njihovog kvaliteta vrše se u Srbiji od 60-ih godina dvadesetog veka na ovamo. Cilj ovog rada je prikazivanje metode kojom se numerički ocenjuje kvalitet travnjaka, a pored toga se prikazuje i doprinos svake, pojedinačne vrste ukupnom kvalitetu. Doprinos vrste, koji je konkretan broj - pozitivan ili negativan, zavisi od njene pokrovnosti i numeričkog indeksa kvaliteta. Zahvaljujući dobijenim vrednostima doprinosa svake vrste kvalitetu izvršena je podela na klastere. To je najpre izvršeno metodom k-means clustering, zadata su četiri klastera, u prvom je samo jedna vrsta Agrostis vulgaris, u drugom su vrste koje pozitivno utiču na kvalitet, u trećem vrste koje negativno utiču na kvalitet a u četvrtom klasteru su neutralne vrste. Ova podela je proverena metodom glavnih komponenti, i na grafikonu je uočljivo razdvajanje vrsta na pomenute klastere. Zahvaljujući ovoj metodi moguće je za kratko vreme dobiti podatke o kvalitetu nekog travnjaka i podatke o vrstama koje tu žive. Ti podaci o konkretnom travnjaku su dovoljni da se proceni njegova upotrebna vrednost kada je u pitanju stočarska proizvodnja a da se pritom izbegnu skupe hemijske analize.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Evaluation of quality of semi-natural grasslands of central Serbia upon phytosociological and numerical analysis
T1  - Procena kvaliteta polu-prirodnih travnjaka centralne Srbije korišćenjem fitocenoloških i numeričkih analiza
EP  - 371
IS  - 2
SP  - 363
VL  - 29
DO  - 10.2298/BAH1302363P
ER  - 

@article{
author = "Petrović, M. and Aćić, Svetlana and Zornić, Vladimir and Andjelković, B. and Dajić-Stevanović, Zora and Babić, S.",
year = "2013",
abstract = "The aim of this paper is to present a numeric-statistical model by which it is possible to evaluate the quality of the observed grassland upon floristic and vegetation assessment. Thanks to this new methodological approach, the impact of each individual plant species on overall quality of the grassland could be estimated. The main goal was to determine species which significantly determine the pastoral value of the grassland. The quality (pastoral value) of the grassland was calculated using the numerical values of quality index of each individual species of each relevé of the community. For testing this numerical method, the total of 11 relevés of 4 grassland communities of hilly-mountainous area of Mt. Kopaonik was used. Analyzed vegetation includes previously unpublished phytocenological relevés as result of our own field research. All analyzed relevés were obtained using the method of the Swiss-French phytocenological school. The results showed that the best and the worst quality were determined for the ass. Festuco-Brometum erectii, and the ass. Nardetum strictae, respectively. Species that highly contributed to good and bad quality of grassland were Arrhenatherum elatius, Festuca rubra, Dactylis glomerata, Trifolium repens, etc., and Carduus alpestris, Hieracium hoppeanum, Ornithogalum umbelatum, respectively., Travnjaci predstavljaju jedan od najznačajnijih prirodnih resursa; na teritoriji Srbije obuhvataju oko 1.400.000 ha. Koriste se kao izvor stočne hrane ali i kao resurs materija koje se primenjuju u farmaceutskoj industriji. Uzimajući u obzir njihov veliki značaj istraživanja na travnjacima u svrhu ispitivanja njihovog kvaliteta vrše se u Srbiji od 60-ih godina dvadesetog veka na ovamo. Cilj ovog rada je prikazivanje metode kojom se numerički ocenjuje kvalitet travnjaka, a pored toga se prikazuje i doprinos svake, pojedinačne vrste ukupnom kvalitetu. Doprinos vrste, koji je konkretan broj - pozitivan ili negativan, zavisi od njene pokrovnosti i numeričkog indeksa kvaliteta. Zahvaljujući dobijenim vrednostima doprinosa svake vrste kvalitetu izvršena je podela na klastere. To je najpre izvršeno metodom k-means clustering, zadata su četiri klastera, u prvom je samo jedna vrsta Agrostis vulgaris, u drugom su vrste koje pozitivno utiču na kvalitet, u trećem vrste koje negativno utiču na kvalitet a u četvrtom klasteru su neutralne vrste. Ova podela je proverena metodom glavnih komponenti, i na grafikonu je uočljivo razdvajanje vrsta na pomenute klastere. Zahvaljujući ovoj metodi moguće je za kratko vreme dobiti podatke o kvalitetu nekog travnjaka i podatke o vrstama koje tu žive. Ti podaci o konkretnom travnjaku su dovoljni da se proceni njegova upotrebna vrednost kada je u pitanju stočarska proizvodnja a da se pritom izbegnu skupe hemijske analize.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Evaluation of quality of semi-natural grasslands of central Serbia upon phytosociological and numerical analysis, Procena kvaliteta polu-prirodnih travnjaka centralne Srbije korišćenjem fitocenoloških i numeričkih analiza",
pages = "371-363",
number = "2",
volume = "29",
doi = "10.2298/BAH1302363P"
}

Petrović, M., Aćić, S., Zornić, V., Andjelković, B., Dajić-Stevanović, Z.,& Babić, S.. (2013). Evaluation of quality of semi-natural grasslands of central Serbia upon phytosociological and numerical analysis. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 29(2), 363-371.
https://doi.org/10.2298/BAH1302363P

Petrović M, Aćić S, Zornić V, Andjelković B, Dajić-Stevanović Z, Babić S. Evaluation of quality of semi-natural grasslands of central Serbia upon phytosociological and numerical analysis. in Biotechnology in Animal Husbandry. 2013;29(2):363-371.
doi:10.2298/BAH1302363P .

Petrović, M., Aćić, Svetlana, Zornić, Vladimir, Andjelković, B., Dajić-Stevanović, Zora, Babić, S., "Evaluation of quality of semi-natural grasslands of central Serbia upon phytosociological and numerical analysis" in Biotechnology in Animal Husbandry, 29, no. 2 (2013):363-371,
https://doi.org/10.2298/BAH1302363P . .