Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 1
Written by Evgeniy DIMITROV, Hristina NEDEVA, Rangel DRAGOV, Teodora ANGELOVA, Zlatina UHR, Blagoy ANDONOV
In the period 2019-2023 in the field of irrigated agriculture experimental station Pazardzhik on cinnamon forest soil at humus 1.2-1.5% and pH 5.5-6 is set trial, which includes 9 varieties of common winter wheat selection of IPGR Sadovo. The stability of yields and its elements -1000 grains weight, and test weight, kg/hl Yield stability and grain physical properties of the varieties were evaluated using the stability variants σi2 and Si2 of Shukla (1972), the ecovalance Wi of Wricke (1962) and the phenotypic stability criterion (Ysi) of Kang (1993). IPCSSVKYSI (Interactive program for calculating Shukla's stability index (Ysi)) developed by Kang and Magari (1995) was used to determine the stability index. The objective of our study was to evaluate the stability of common winter wheat cultivars grown in the Pazardzhik region. The results of this study will enable us to make an even more complete evaluation of the varieties of the IPGR Sadovo breeding of common winter wheat. Phenotypic stability is particularly important for practice.
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