GGE biplot analysis for grain yield of single cross maize hybrids under stress and non-stress conditions

P. H. Kuchanur; P. M. Salimath; M. C. Wali; Channayya Hiremath

P. H. Kuchanur Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi 585 287, Karnataka
P. M. Salimath Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi 585 287, Karnataka
M. C. Wali Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi 585 287, Karnataka
Channayya Hiremath Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi 585 287, Karnataka

Keywords: G × E interactions, biplot, multienvironment trial, AMMI analysis

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.