Genetic variation, association and path coefficient analysis for grain yield and its components in RILs derived population of rice
2013
Chaudhari, Prabharani | Mishra, D.K. | Koutu, G.K.
One hundred twenty one japonica x indica derived F₁₀ Recombinant Inbred Lines (RILs) were planted in Alpha lattice design with two replications during kharif 2012 at Seed Breeding Farm, Department of Plant Breeding and Genetics, J.N.K.V.V., Jabalpur. Significant variation due to genotypes for all the characters revealed that the genotypes differ significantly for all the characters under study. In present study high heritability coupled with high genetic advance was exhibited for characters viz.., number of tillers per plant, number of filled spikelets per panicle, number of unfilled spikelets per panicle, number of spikelets per panicle, grain yield per plant, panicle index and harvest index. It was also observed that number of tillers per plant, plant height, biological yield per plant, panicle index and harvest index were positively correlated with grain yield and also had positive direct effect and therefore these traits should be given due importance while practicing selection, aimed for improvement of grain yield. These RILs can be used as parents for hybrid production in rice.
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