Genotype by environment (GxE) interaction and stability for seed yield of newly developed mung bean genotypes

Abstract

Genotype by environment interaction (GEI) is crucial for selecting high performing and adapted genotypes for targeted breeding. The main goal of this study was to study genotype-by-environment interaction and stability of eight elite mung bean (Vigna radiate L.) genotypes (DTG01-DTG08) with a national check DX208 which laid out in RCBD with 3 replications across three locations (Ha Noi, Phu Tho, Thanh Hoa) in three crop seasons (summer 2018, summer 2019, spring 2019) at Vietnam. The analysis of variance showed that genotype, location, environment, and interaction between GxL were significant for grain yield. The seed yields of all varieties were significantly higher than those of the control variety (please check). Among these, DTG05 and DTG06 exhibited the highest yields, approximately 1.77 tons/ha and 1.89 tons/ha, respectively. AMMI model showed that DTG05 exhibited the best performance in the summer season, especially at Thanh Hoa, and Ha Noi. Thus, DT05 could have commercial potential for mung bean production in Northern and North Central Vietnam.