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Viability of Embryo Sacs and Fruit Set in Different Plum (Prunus domestica L.) Cultivars Grown under Norwegian Climatic Conditions

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2022
Viability_of_Embryo_pub_2022.pdf (3.703Mb)
Authors
Cerović, Radosav
Fotirić-Akšić, Milica
Đorđević, Milena
Meland, Mekjell
Article (Published version)
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Abstract
Compatibility and synchrony between specialized tissues of the pistil, female gametophytes and male gametophytes, are necessary for successful pollination, fertilization, and fruit set in angiosperms. The aim of the present work was to study the development and viability of embryo sacs, as well as fertilization success, in relation to the fruit set of the cultivars ‘Mallard’, ‘Edda’, ‘Jubileum’, and ‘Reeves’, under specific Norwegian climatic conditions. Emasculated, unpollinated, and open-pollinated flowers were collected at the beginning of flowering, and on the 3rd, 6th, 9th, and 12th days after flowering, from all four plum cultivars over two years (2018/2019). Ovaries were dehydrated, embedded in paraffin wax, sectioned, stained, and observed under a light microscope. Results showed the existence of synchronization between successive phases in the development of the embryo sac and individual phases of flowering. All plum cultivars had higher percentages of viable embryo sacs, fert...ilized embryo sacs, and fruit set in 2018 than in 2019. These differences may be related to the very low temperatures during the post-full-flowering period in 2019, and to the low adaptation of some studied cultivars to unfavorable conditions. In our study, the cultivar ‘Jubileum’ showed the highest percentage of viable embryo sacs, fertilized embryo sacs, and fruit set compared to other cultivars, i.e., the best low-temperature adaptation.

Keywords:
embryo sac / fertilization / ovule / pollination / temperature
Source:
Plants, 2022, 11, 2, 219-
Publisher:
  • MDPI
Funding / projects:
  • This study was supported by the Research Council of Norway (project No. 269227).

DOI: 10.3390/plants11020219

ISSN: 2223-7747

WoS: 000757066500001

Scopus: 2-s2.0-85122894708
[ Google Scholar ]
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/6025
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  • Radovi istraživača / Researchers’ publications
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Poljoprivredni fakultet

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