TY - JOUR ID - 107104 TI - Multi-environment evaluation of winter bread wheat genotypes under rainfed conditions of Iran-using AMMI model JO - Crop Breeding Journal JA - CBJ LA - en SN - 2008-868X AU - Golkari, S. AU - Hagparast, R. AU - Roohi, E. AU - Mobasser, S. AU - Ahmadi, M. M. AU - Soleimani, K. AU - Khalilzadeh, G. AU - Abedi-Asl, G. AU - Babaei, T. AD - Dryland Agricultural Research Institute (DARI), Agricultural Research, Education and Extension Organization (AREEO), Maragheh, Iran AD - Dryland Agricultural Research Institute (DARI), Agricultural Research, Education and Extension Organization (AREEO), Kermanshah, Iran AD - Kurdistan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sanandaj, Iran AD - Seed and Plant Certification and Registration Institute (SPCRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran AD - North Khorasan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Bojnord, Iran AD - Zanjan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Zanjan, Iran AD - West Azarbaijan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Uromieh, Iran AD - Ardabil Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ardabil, Iran AD - Markazi Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Arak, Iran Y1 - 2016 PY - 2016 VL - 6 IS - 2 SP - 17 EP - 31 KW - genotypic and environmental co-variables KW - grain yield improvement KW - Specific Adaptation KW - wide adaptation KW - winter wheat DO - 10.22092/cbj.2016.107104 N2 - Genotype × environment interaction is an important and challenging issue for plant breeders in developing new improved varieties. This study aimedto estimate the impact of genotype × environment interactions for grain yield in winter wheat under rainfed conditions using the additive main effects and multiplicative interaction (AMMI) model, and to select genotypes with high grain yield, yield stability, and adaptation for cold rainfed environments in Iran. Twenty-two breeding lines and two commercial winter wheat cultivars, representing winter wheat-growing cold rainfed areas of Iran, were tested in eight locations over three crop cycles (2011-14). Environment was the pre dominant source of variation, accounting for 84.8% of the total sum of squares, with the remainder due to the genotype × environment interaction effect (which was almost four times that of the genotype effect). Average grain yield varied from 1125 to 1608 kg ha-1 across the 24 environments, with an average of 1385 kg ha-1. The AMMI biplots identified genotypes with wide and specific adaptation as well as environments with high and low genotype discrimination and characterization. Relative humidity, freezing days, and plant height were among the environmental factors and genotypic co-variables that contributed highly to genotype × environment interactions for grain yield. These findings could identify breeding lines as potential genetic resources for improving and stabilizing grain yield in winter bread wheat breeding programs for cold rainfed areas of Iran, through exploitingand minimizing thegenotype × environment interaction. UR - https://cbjournal.areeo.ac.ir/article_107104.html L1 - https://cbjournal.areeo.ac.ir/article_107104_1a25f2eae9d14e6b2d9d9e339c83ef53.pdf ER -