Vol. 18 No. 1
Principal component analysis and assessment of out cross potential traits associated with grain yield in maintainer lines of rice (Oryza sativa L.)
Author(s): K. Krishna, Y. C. Mohan, V. Gouri Shankar, CH. V. Durga Rani and L. Krishna
Abstract: In the present study, forty genotypes were evaluated for the mutual influence of multiple parameters for aggregate genetic variability available in rice maintainer lines by Principal Component Analysis and out cross potential traits associated with grain yield. This experiment was performed out during 2018-19 in kharif season and the genotypes were classified in the Standard Evaluation System (SES) scale (IRRI-2013) for angle of flower opening and stigma exsertion. Accordingly, based on the scoring, angle of glume opening showed 6 genotypes fell under moderate/medium angle of glume opening and 34 genotypes fell under low angle of glume opening (SES-2013). In the stigma exsertion, 38 genotypes were categorized as moderate/medium exertion and 2 genotypes were categorized as low exertion, PCA showed that a cumulative variance of 53.7% from kernel length, kernel length after cooking and number of grains per panicle contributing almost all the variation of traits.