Interrelationships between preharvest sprouting and some agronomic traits in winter wheat (Triticum aestivum L.)
Tadeusz Wojas
t.wojas@ihar.edu.plInstytut Hodowli i Aklimatyzacji Roślin, Oddział w Krakowie (Poland)
Magdalena Gut
Instytut Hodowli i Aklimatyzacji Roślin, Oddział w Krakowie (Poland)
Abstract
Variability, heritability and phenotypic/genetic correlations of preharvest sprouting with certain agronomic traits (1000 kernel weight, plant height, heading and maturity date, resistance to four fungal diseases: powdery mildew, leaf rust, leaf and ear septoria) were analysed basing on the results of field trials carried out with 31 genotypes of winter wheat in one locality through three years (1999–2001). Preharvest sprouting showed very high variability, coefficients ranging from 20.6 to 53.9% depending on a year, but the mean resistance was low — 3.48, 3.66 and 6.17 respectively, in the 1–9 scale. The coefficient of heritability was high and scored 0.78. The obtained phenotypic and genetic correlations between preharvest sprouting resistance and the remained traits were low and insignificant, attaining a maximal value of 0.29 in case of date of heading. The resistance to preharvest sprouting tended to be unfavourably connected with the plant height, 1000 kernel weight, resistance to leaf rust and ear septoria.
Keywords:
agronomy traits, correlations, preharvest sprouting, winter wheatReferences
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Authors
Tadeusz Wojast.wojas@ihar.edu.pl
Instytut Hodowli i Aklimatyzacji Roślin, Oddział w Krakowie Poland
Authors
Magdalena GutInstytut Hodowli i Aklimatyzacji Roślin, Oddział w Krakowie Poland
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