Author(s):

GN Hosagoudar and Umesh Babu BS

Abstract: The present study was carried out at Agricultural and Horticultural Research Station, Ponnampet, University of Agricultural and Horticultural Sciences, Shivamogga during 2015. The experimental material comprised of 13 different advanced varietal lines including existing varieties as checks. Mean performance of individual rice genotypes revealed that the days to 50% flowering found to vary from 106.33 days to 120.33. Plant height was found to vary from 56.50 cm to 97.00 cm with average height of 78.09 cm. IET-24451 gave maximum grain yield (3797.49 kg/ha) followed by IET-24471 (3729.39 kg/ha). The genotype IET-24451 produced maximum grain yield (3797.49 kg/ha) followed by IET-24471 (3729.39 kg/ha), whereas IET-23930 was found to be inferior in grain yield (1573.48 kg/ha). Analysis of variance revealed highly significant sum of squares due to genotypes for all the characters indicating existence of ample variability among the genotypes. The traits such as plant height, number of panicles per plant, number of panicles per m² and grain yield which showed high heritability coupled with high genetic advance could be used as selection criteria for their improvement since these are governed by additive gene action. The traits like days to 50% flowering could be used as indirect selection criteria for their simultaneous improvement.

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