Genetic diversity analysis of grain yield and quality traits in rice germplasm accessions (Oryza sativa L.) by principal component analysis

Abstract

The Rice germplasm provide with ample of genetic diversity and a treasury of valuable genes. It is a rich pool of important genes that plant breeders can exploit for crop improvement. Principal components with eigen values greater than 1 and variance level greater than 4 level is perceived to be the main PC. In this study, eight components exhibited Eigen values of >1 and showed cumulative variation of 75.22%. The first PC (15.83%) and second PC (15.33%) showed for cumulative variation 31.36%. The PC1 recorded 15.83%, although PC2, PC3, PC4, PC5, PC6, PC7 and PC8 displayed 15.33%, 12.64%, 9.03%, 7.4%, 5.91%, 4.61% and 4.27% variance respectively between the accessions for the characters in analysis. Genotypes Saraiphool, MTU 1010, Zinc rice-2, Chaptimathyala, Bora, Korma, R-RKM-1, Kalajeera, Jauphool, Tiltaturi and Parwatkala were found to be promising and found to be genetically divergent. Hence, these genotypes could be utilized in the hybridization programme to produce transgressive segregants.