GGE biplot analysis for grain yield of single cross maize hybrids under stress and non-stress conditions
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Authors
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P.H. Kuchanur
Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi 585 287, Karnataka
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P.M. Salimath
University of Agriculture Sciences, Raichur 584 104, Karnataka
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M.C. Wali
All India Coordinated Research Project on Maize, Main Agricultural Research Station, University of Agriculture Sciences, Dharwad 580 005, Karnataka
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Channayya Hiremath
Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi 585 287, Karnataka
Abstract
In AMMI analysis environment main effect and genotype × location interaction were found significant. Significant differences in maize hybrids were observed for grain yield among the locations over the years both under stress and
non-stress conditions. Among the four interaction principal component axes (IPCA) of GGE biplot, first two IPCA were significant explaining 75.89 % variation. Hybrid, KDMI-15 × NEI-9202-B was found superior among all the hybrids over checks over all the locations. Other hybrids viz., CM-111 × HYD SEL-15 and CI-4 × NEI-9202-B exhibited almost no interaction with the environments convincing the reliability
of their performance. The hybrids viz., KDMI-15 × NEI-9208- B, CM-111 × HYD SEL-17, 900M, CML-446 × HYD SEL-4, CI-4 × HYD SEL-17, HYD SEL-7 × KDMI-15 and HYD SEL-15 × HYD SEL-17 were most responsive.