The influences of genotype, environment, and genotype × environment interaction on quality traits in common winter wheat. 1. Sedimentation value and fermentation number

The experiment was carried out on the experimental field of the IPGR "K. Malkov", Sadovo, during the period 2019-2022 (3 vegetation years). Thirty-eight common winter wheat varieties were studied, under the conditions of a control test. The qualitative traits were recorded: sedimentation value (SdV) according to Pumpyansky, and fermentation number - Pelshenke test (FN). The traits stability of the studied materials was assessed using the stability variances σi2 according to Shukla (1972), the ecovalence Wi according to Wricke (1962), and the phenotypic stability criterion (Ysi) according to Kang (1993). To determine the stability index, the software product IPCSSVKYSI (Interactive program for calculating Shukla’s stability index, developed by Kang and Magari (1995) was used. It was found that the influence of genotype, environment and their interaction was significant for both monitored traits. The influence of genotype was leading for FN, and for SdV the environment had the greatest influence. The remaining factors have a significant influence on both traits. The varieties Kami, Neda, Pchelina and Dragana exhibit high stability of the traits sedimentation value and fermentation number.