Vol. 10, Issue 12 (2021)

Author(s):
O Venkateswarlu, B Santhosh Kumar Naik, KSS Naik and AP Rajesh

Abstract:
Nine advance breeding lines of groundnut developed at agricultural research station, Kadiri were evaluated along with six agronomically adopted varieties dharani, k-6, k-9, Kadiri Amaravathi, Kadiri Anantha, Kadiri Harithandra in randomized block design with three replications to study the Genotype x environment interaction for grain yield and their component characters under three environments during kharif 2017, kharif 2018 and kharif 2019. The environment + (genotype x environment) was significant for all the characters indicating distinct nature of environments genotype x environment interactions in phenotypic expression. The genotype x environment (linear) interaction component showed significance for all the characters studied except days to 50% flowering and dry haulm weight. This indicated significant differences among the genotypes for linear response to environments (b_i) behaviour of the genotypes could be predicted over environments more precisely and GXE interaction was outcome of the linear function of environmental components. Based on stability parameters and over all mean, two genotypes viz., K2348 and K2353 were stable in performance for yield and yield parameters over the environments.