Principal component analysis for anaerobic germination traits in rice (<em>Oryza sativa </em>L.)

Abstract

Principal component analysis was carried out to assess the diversity among 107 rice genotypes with regards to anaerobic germination tolerance traits. Results revealed three principal components with eigen value > 1. These components contributed for a total variability of 75.780 per cent. Component 1 (PC 1) had contributed maximum 27.288 per cent while PC 2 had contributed to 26.060 per cent and PC 3 had contributed to 22.331 per cent towards the total variability. The characters, namely, anaerobic response index and germination per cent explained maximum variance in PC 1. The results of 2D scatter diagram revealed maximum diversity for MTU 1140. Hybridization of MTU 1140 with MTU 1010, identified as widely diverse genotypes in the study is expected to result in high yielding transgressive segregants with high yield and tolerance for germination under anaerobic conditions.