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One hundred and six recombinant inbred lines (RILs) from JL 24  ICG 11337 of groundnut (Arachis hypogaea L.) were evaluated for late leaf spot (LLS), yield and its component traits to study for the various genetic parameters viz., magnitude of genotypic, phenotypic variation, heritability and genetic advance as per cent of mean. Highly significant variation was observed for late leaf spot, yield and other component traits. The RIL population showed high range of expression transcending the limits of parental values for some important traits like mature pods / plant, total pods / plant, mature seeds / plant, 100seed weight, haulm weight / plant and pod yield / plant. High values of PCV, GCV, heritability and genetic advance as per cent of mean in respect of LLS score at 75 , LLS score at 90 DAS, 100seed weight and haulm weight / plant. It was observed that selection for these traits would be useful in the genetic improvement of these traits. Based on mean performance of RILs for group of traits superior lines were selected for LLS tolerance with early maturity, yield and its component traits.

iosr journal of agriculture and veterinary science

Genetic Variability, Heritability for Late leaf Spot tolerance and Productivity Traits in a Recombinant Inbred Line Population of Groundnut (Arachis hypogaea L.)