Components of variability and heritability of phenological phases in interspecies progenies of F1 generation in grapevine

Abstract

In four interspecies crossing combinations of grapevine (Seedling 108 x Muscat Hamburg, Muscat Hamburg x Seedling 108, S.V. 18315 x Muscat Hamburg and Muscat Hamburg x S.V. 12375) during three years period, important phenological phases (bud burst, blooming time, veraison and ripening time) were examined. Based on results of analysis of variance, for all investigated characteristics, components of variability, coefficients of genetic and phenotypic variation and coefficient of heritability in a broader sense were calculated. Values of these parameters depended a lot on examined crossing combination. In majority of all investigated characteristics and almost for ail crossing combinations, genetic variability took the biggest part in total variability. Only for blooming time, in crossing combinations Seedling 108 x Muscat Hamburg and Muscat Hamburg x S.V. 12375, year variability participated the most in total variability. The lowest coefficients of genetic and phenotypic variation were established for blooming time (4.01%; 4.86%), and the largest for veraison (36.43%; 38.81%). Considering examined crossing combination, coefficient of heritability was from 63.08% up to 70.76% for bud burst, from 60.61% up to 87.71% for blooming time, from 84.58% up to 88.14% for verasion and from 56.86% up to 89.29% for ripening time.

U četiri kombinacije interspecies ukrštanja vinove loze (Sejanac 108 x Muskat hamburg, Muskat hamburg x Sejanac 108, S.V. 18315 x Muskat hamburg i Muskat hamburg x S.V. 12375) tokom trogodišnjeg perioda istraživanja ispitivane su važnije fenološke faze (vreme kretanja okaca, vreme cvetanja, šarak i vreme sazrevanja). Na osnovu rezultata analize varijanse za sve ispitivane osobine izračunate su komponente varijabilnosti, koeficijenti genetičke i fenotipske varijacije i koeficijent heritabilnosti u širem smislu. Vrednosti ovih parametara umnogome su zavisile od proučavane kombinacije ukrštanja. U ukupnoj varijabilnosti većine ispitivanih osobina u skoro svim kombinacijama ukrštanja najviše je učestvovala genetička varijabilnost. Jedino je u ukupnoj varijabinosti vremena cvetanja u kombinacijama ukrštanja Sejanac 108 x Muskat hamburg i Muskat hamburg x S.V.12375 najviše učestvovala varijabilnost uslovljena godinom. Najmanji koeficijenti genetičke i fenotipske varijacije utvrđeni su za vreme cvetanja (4,01%; 4,86%), a najveći za šarak (36,43% 38,81%). U zavisnosti od ispitivane kombinacije ukrštanja, koeficijent heritabilnosti za vreme kretanja okaca kretao se od 63,08% do 70,76%, za vreme cvetanja od 60,61% do 87,71%, za šarak od 84,58% do 88,14% i za vreme sazrevanja od 56,86% do 89,29%.