Vol. 11, Issue 9 (2022)

Author(s):
M Pallavi, P Shanthi, VLN Reddy and AR Nirmal Kumar

Abstract:
This research was carried out at Wetland Farm, Sri Venkateswara Agricultural College, Tirupati, during the kharif season of 2020, in order to determine genetic variability, heritability, and genetic advance in 42 variants (genotypes) of rice. The analysis of variance revealed substantial differences among the 42 genotypes for all of the attributes assessed. The number of filled grains per panicle was followed by grain yield per plant and 1000-grain weight, all of which reported high PCV, GCV, heritability (broad sense), and genetic advance as a percentage of the mean, showing that these traits were driven by additive gene action and that simple selection could be employed to improve them. Days to 50% flowering, plant height, panicle length, number of panicles per plant, and spikelet fertility, on the other hand, showed moderate to low GCV, PCV, strong heritability, and moderate to low genetic advance as a percentage of mean. As a result, intermating of chosen genotypes might be proposed to produce variability, followed by selection for superior segregants for the abovementioned traits in following generations.