Variability and Character Association of Yield Components in Rainfed Lowland Rice

Forty-two released lowland rice varieties including check were evaluated to obtain information on genetic variability, heritability, interrelationship of grain yield and its components. Highly significant differences were observed among the genotypes in all the characters. High PCV and GCV were observed in plant height, grains/panicle, EBT/hill and panicle weight. High heritability with high genetic advance was observed in plant height and grains/panicle. But high heritability with low genetic advance was recorded in days to fifty per cent flowering, 1000-grain weight and grain length. Plant height had significant positive correlation with panicle weight, grains/panicle, 1000-grain weight and negative correlation with single plant yield.