Document Type : Research Paper
Authors
1
Assistant Professor, Crop and Horticultural Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
2
Associate Prof. Seed and Plant Improvement Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
3
Researcher, Crop and Horticultural Science Research Department, Lorestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Khoramabad, Iran
4
Assistant Professor, Crop and Horticultural Science Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Isfahan, Iran
5
Faculty member of Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
10.22034/saps.2024.62530.3252
Abstract
The genotype × environment interaction is a major challenge in the study of quantitative characters because it reduces yield stability in different environments. In this regard to analysis of genotype × environment interaction and determine the yield stability of new sunflower hybrids, 18 hybrids along with Zarin cultivar were evaluated under different environmental stresses conditions (non-stress, drought stress and salinity stress) in a randomized complete block design with three replications in four experimental field stations (Boroujerd, Gorgan, Gonbad and Isfahan) during 2022-2023 cropping season. Results of combined analysis of variance indicated that the effects of environments, genotypes and genotype × environment interaction were significant, suggesting that the genotypes responded differently in the studied environment conditions. So, there was the possibility of stability analysis. According to the results of stability analysis using Eberhart and Russel method, the H14, H10 and H1 genotypes with higher seed yield than overall mean and regression coefficient equal one (bi=1) were identified as the genotypes with high general stability for all regions. Based on the simultaneous selection method for yield and stability (YSi), the genotypes of H1, H4 and H10 with the lowest values were stable, whereas genotypes H3, H9 and H6 with highest values were unstable. Also, based on the SIIG index, the the genotypes of H1, H4, H2, H10, H12 and H16 with having high SIIG value as well as higher seed yield that total average were recognized as superior genotypes from the point of stability and seed yield.
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