Univrsity of Tehran Press Iranian Journal of Field Crop Science 2008-4811 45 3 2014 09 23 Stability Analysis of Grain Yield in Lineas and Cultivars of Rice (Oriza sativa L.) Using AMMI (Additive Main effects and Multiplicative Interaction) Method Stability Analysis of Grain Yield in Lineas and Cultivars of Rice (Oriza sativa L.) Using AMMI (Additive Main effects and Multiplicative Interaction) Method 445 452 53540 10.22059/ijfcs.2014.53540 FA Khodadad Mostafavi Department of Agronomy and Plant Breeding, College of Agriculture, Karaj branch, Islamic Azad University, Alborz, Iran. Seyed Sadegh Hosseini Imeni Researcher of rice research inistitute of Iran, Amol Morteza Firoozi Department of Agronomy and Plant Breeding, Birjand Branch, Islamic Azad University, Birjand, Iran Journal Article 2011 05 31 Selection of favorite cultivars and lines affected with genotype- environment interaction dramatically. In order to study of genotype × environment interaction in rice, 12 lines with 2 commercial cultivars as check (Neda and Fajr) was studied in 9 different environments (3 location and 3 years). The experiment was randomized complete block design (RCBD) with three replications. The differences were significant among genotypes, environments and their interaction. The yield stability was studied by AMMI method. The results showed two principal components were significant and explain 67 percent of interaction variance. Results revealed that grain yield was highly influenced by environmental factors. The line 9 had yield higher than mean and with the lowest for first interaction principal component thus distinctive as stable line. Biplot of two first interaction component revealed that line 9 in Sari (2008) and Amol (2008) had specific adaptability. Lines 4 and 8 in Tonkabon (2008 and 2009) and in Amol (2010) had specific adaptability. Lines 6, 7, 10 and Neda cultivar in Sari (2009, 2010) had specific adaptability. Finlay the lines 1, 2, 3 and 5 in Tonkabon (2010) had specific adaptability. Lines 2, 5, 7 and 12 and fajr and Neda cultivars had the highest common adaptability to environments. Selection of favorite cultivars and lines affected with genotype- environment interaction dramatically. In order to study of genotype × environment interaction in rice, 12 lines with 2 commercial cultivars as check (Neda and Fajr) was studied in 9 different environments (3 location and 3 years). The experiment was randomized complete block design (RCBD) with three replications. The differences were significant among genotypes, environments and their interaction. The yield stability was studied by AMMI method. The results showed two principal components were significant and explain 67 percent of interaction variance. Results revealed that grain yield was highly influenced by environmental factors. The line 9 had yield higher than mean and with the lowest for first interaction principal component thus distinctive as stable line. Biplot of two first interaction component revealed that line 9 in Sari (2008) and Amol (2008) had specific adaptability. Lines 4 and 8 in Tonkabon (2008 and 2009) and in Amol (2010) had specific adaptability. Lines 6, 7, 10 and Neda cultivar in Sari (2009, 2010) had specific adaptability. Finlay the lines 1, 2, 3 and 5 in Tonkabon (2010) had specific adaptability. Lines 2, 5, 7 and 12 and fajr and Neda cultivars had the highest common adaptability to environments. https://ijfcs.ut.ac.ir/article_53540_22ed439655b43e856d12aac6c358ae2a.pdf