Eberhart – Russell’ and AMMI Approaches of Genotype by Environment Interaction (GEI) for Yield and Yield Component Traits in Vigna radiata L. Wilczek Singh Chandra Mohan1,*, Mishra S. B.2, Pandey Anil2, Arya Madhuri2 1Department of Plant Breeding and Genetics, Rajendra Agricultural University, Pusa (Samastipur), Bihar– 848 125, India 2Department of Plant Breeding and Genetics, Tirhut College of Agriculture, Dholi, Muzaffarpur, Bihar– 843 121, India *Email: cmsinghgbp@gmail.com
Online published on 24 June, 2014. Abstract Evaluation of genotype by environment interaction (GEI) is very important for development of crop varieties with good potential. In this study, Eberhart - Russell’ and AMMI approaches were used to analyse the pattern of stability under targeted environment. The pattern of stability parameters of seed yield indicated that two genotype viz., G2 and G36 exhibited high mean seed yield with non-significant s2di, whereas G33 showed average seed yield (mean) and nonsignificant s2di. Environmental indices indicated that environment A and environment B were most favourable for most of the yield component traits, whereas environment C was unfavourable for almost all the yield and yield component traits. Based on AMMI 1; G1, G2, G18, G4, G3, G24, G22 and G25 were found stable for seed yield. For seed yield; genotypes and environments were grouped into nine sectors (AMMI 2). The first sector consist of with environment B with high IPCA score for some outlier genotypes i.e. G25, G14 and G22, indicated that the environment B was better than other environments and three genotypes were found stable for SYP. The selected genotypes may be utilized in Vigna radiata improvement programme at targeted location with true type of breeding lines. Highlights Based on Eberhart – Russell approach, G2 and G36 were found stable for seed yield; whereas G1, G2, G18, G4, G3, G24, G22 and G25 were found stable based on AMMI 1. Genotypes and environments were grouped into nine sectors based on AMMI 2 and G25, G14 & G22 were found stable for seed yield. Environment B (timely sown) was found ideal for seed yield followed by environment A (early sown) and C (late sown).
Top Keywords AMMI, GEI, principle components, stability, Vigna radiata, yield contributing traits. Top |