GGE biplot analysis of multi-locational yield trials and identification of representative environments for barley (Hordeum vulgare L.) in India

The present study was carried out to ascertain the genotype × environment crossovers, stable genotypes and to select the discriminating and representative environments using GGE biplot in barley. The pooled per se grain yield ranged from 22.77 to 50.16 q/ha, across the locations. Nine locations were grouped into four mega environments and the genotypes viz., RD 2830, RD 2552, BH 902 and PL 751, etc. which were exhibited as vertex genotypes. The locations Tabiji and Kanpur (−0.67) followed by Navgaon and Kanpur (−0.58), Faizabad and Ranchi (−0.35), etc. were found negatively correlated. The locations, namely, S. K. Nagar, Navgaon, Tabiji and Faizabad were most discriminating and representative over the environments.