ANALYSIS OF GENOTYPE × ENVIRONMENT INTERACTION AND POD YIELD STABILITY IN PEANUT
Abstract: The study aimed to determine the effect of genotype, environment and their interaction on pod yield and to identify the most stable peanut genotypes. Genotypes were grown in eight environments (4 years: 2014, 2015, 2016 and 2017 at 2 locations: Shandweel and Toshka). The experiment was laid down in RCBD with three replications. The combined analysis of variance for revealed highly significant differences for genotypes, environments and their interactions in all tested traits. The significant interaction indicated that the genotypes respond differently across the different environments. The mean pod yield values of genotypes over environments indicated that G16 and G7 had the highest (29.76) and lowest (22.34) pod yield ardabfed-1 respectively. The mean pod yield of environments ranged from 31.09 for Shandweel 2017 to 21.74 ardabfed-1 for Toshka 2015. In AMMI analysis, using AMMI model revealed significant differences (P<0.01) for genotype, environment, G×E interaction and interaction principal component (IPCA1), suggesting differential response of varieties across testing environments and the need for stability analysis. The two IPCA were also significant. Hence, AMMI with only two IPCA could be considered as the best predictive model to reveal the maximum G×E interaction for pod yield in peanut. Stability analysis using AMMI Biplot graph and AMMI stability value were done to shed light on the G×E interaction of pod yield the study revealed that the highest pod yield per environment was recorded at E4 and E1 that seemed to be suitable environments for high pod yield performance in the present set of genotypes. Hence, they can be recommended as ideal environments for growing the present set of peanut genotypes for breeding program. The genotypes Giza6, Introduced. 182, 282, 335, 417 and 514 were suited for Toshka 2017 (Environment 8), while Suhag104, introduced 425, 503 and 420 were suited for Shandweel 2015 (Environment2). To quantify yield stability AMMI stability value (ASV) was calculated. Based on high mean pod yield and ASV, the genotypes Suhag 110, Introduced 510, 514, Suhag 107 and Intr.420 were most stable, while Intr.339 and Local 504 were unstable. Based on the GSI, the most desirable genotype for selection of both stability and high pod yield was Suhag 110 followed by Suhag 113, Suhag 104 and Introduced 401 which was in accordance with the result of AMMI Biplot and with most estimation stability parameters. Generally, the application of AMMI method identification of superior cultivars, there by supporting decisions on peanut cultivar recommendation for different environments.
Publication year 2018
Organization Name
serial title المجلة المصرية للعلوم التطبيقية
Author(s) from ARC
External authors (outside ARC)
    أشرف عبد اللطبف أبو العز
Publication Type Journal
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