Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Rangel DRAGOV, Evgeniy DIMIRTOV, Teodora ANGELOVA, Zlatina UHR
The research was conducted in the period 2020-2023 on the experimental field at the IPGR “K. Malkov”, town of Sadovo. 5 Hungarian varieties, 16 advanced lines and 4 Bulgarian varieties of common winter wheat were evaluated for grain yield and stability. The stability of the grain yield was determined by the variances of stability (σi2 and Si2), equivalency (Wi), the criterion of phenotypic stability (Ysi), regression coefficient bᵢ and general adaptability. The highest average yield for the study period was obtained from MV-Nemere 864.4 kg/da, followed by RU179/1400 and MV-Nador -766.6 and 766.5 kg/da. The yield formed by the Hungarian varieties is relatively high and they are of interest for selection improvement work. In terms of grain yield, the lines RU 129/3053 and RU 177/486 have a complex stability assessment. The variety Sadovo1 is defined as very stable in different environments and valuable for selection programs.
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