Stability analysis of bread wheat landraces and genotypes using GGE-BIPLOT

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Research Paper 01/07/2015
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Stability analysis of bread wheat landraces and genotypes using GGE-BIPLOT

Fatemeh Bavandpori, Jafar Ahmadi, Sayyed Mohssen Hossaini
J. Bio. Env. Sci.7( 1), 482-489, July 2015.
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The objective of this study was to explore the effect of genotype (G) and genotype ×environment interaction (GEI) on grain yield of 20 bread wheat genotypes (Triticumaestivum L.) insix different environments.The experiment was conducted in randomized complete block design(RCBD) with three replications under two conditions(irrigated and rainfed). Yield data were analyzed using the GGE biplot method. Environment (E)explained 81.05% of the total variation, whereas G and GEI captured 3.83% and 11.54%,respectively. The first 2 principal components (PC1 and PC2) were used to create a 2-dimensionalGGE biplot and explained 34.3% and 23.2% of GGE sum of squares (SS), respectively. Collective analysis of the biplotsuggested four bread wheat mega-environments in Kermanshah Province.The firstmega-environment contained environments:E1, E5 and E6 with genotype G12followed by genotypes G16, G9, G5 and G17. Genotype G20followed by genotypes G19, G2 and G18 gave thehighest performance in environment E2. GenotypeG6 followed by genotypes G11, G3, G4 and G8thehighest performance in environments E3.GenotypesG1and G15 followed by genotype G7gave thehighest performance in environment E4.Genotypes12(WC-47403), 9(PISHGAM 2) exhibited the highest meanyield and Stability. Furthermore, the best genotypes were 12(WC-47403), 9(PISHGAM 2), 19(WC-4968), 18(WC-47472) and 20(WC-47528) idealgermplasm in order to introduce in the breeding programs.


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