Identification of high-yielding and stable genotypes of barley for salinity-affected regions in the moderate climate of Iran

Salinity stress is one of the most important abiotic stresses in the arid and semi-arid areas of the world. To identify superior genotypes of barley with high grain performance and stability under salinity stress conditions, ۱۸ promising genotypes along with two local checks (Mehr cultivar and MBS-۹۷-۶ line) were investigated in three saline regions (Yazd, Isfahan, and Birjand) in the ۲۰۲۰-۲۱ and ۲۰۲۱-۲۲ cropping seasons. Based on the results of means comparison, genotypes G۱۹, G۱۷, G۱ (Check ۱), G۲۰ (Check ۲), G۴ and G۸ genotypes showed the highest grain yield compared to the other genotypes. The results of the GGE biplot analysis indicated that the first two principal components in total and in averaged data of two years, accounted for ۴۹.۲۹% and ۲۱.۶%, ۶۰.۴۲% and ۲۵.۸% of the total variation of grain yield, respectively. The vertex genotypes were identified as G۱, G۲, G۱۰, G۱۱, G۱۷, G۱۸, G۱۹ and G۲۰. Isfahan had representativeness ability and was identified as the ideal location for the selection of superior genotypes. On the basis of results, genotypes Rojo/۳/LB.Iran/Una۸۲۷۱//Gloria”S”/Com”S”/۴/Kavir (G۴), Roho / Mazorka // Trompilo /۳/ Lignee۵۲۷/Nk۱۲۷۲ // Jlb۷۰-۶۳ (G۲۰) and Manal / Alanda-۰۱ // ۱-BC-۰۱۵۲ /۴/ Rojo /۳/ LB.Iran / Una۸۲۷۱ // Gloria”S” / Com”S”(G۸) were recognized as the closest genotypes to the ideal genotype. Genotypes G۴ and G۲۰ were recognized as the best genotypes for cultivation in Yazd and G۸ was recognized as the best genotype for cultivation in Isfahan and Birjand.

کلیدواژه ها:

GGE biplot ، Promising genotypes ، Saline Regions ، Test locations