Genotype × Environment Interactions for Grain Yield of Durum Wheat Genotypes Using AMMI Model
Message:
Abstract:
The effects of genotype by environment interactions on the grain yield of twelve promising durum lines along with a durum (Zardak) and a bread (Sardari) wheat as checks were investigated at three locations, representative for multi-location durum yield trials, in Iran under rain-fed and supplementary irrigation conditions for three cropping seasons. Main effects due to E, G and GE interaction as well as four interaction principal component axes (IPCA 1-4) were found to be significant (P <0.01). AMMI biplot was able to distinguish genotypes, with wide and specific adaptation, and environments, with high and low genotype discrimination ability. Genotypic responses were similar in Kermanshah and Ilam in two (2005-06 and 2008-09) out of three years. In Shirvan genotypic responses generally were similar. Based on AMMI analysis, the check cultivars were more adapted to rainfed conditions while the promising genotypes G8, G2, G7, G4 and G6 were adapted to supplementary irrigation conditions. According to AMMI and some stability parameters, the genotypes G3, G10 and G5 were more stable and were more adapted to the whole target regions.
Language:
Persian
Published:
Seed and Plant Journal, Volume:27 Issue: 2, 2011
Page:
183
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