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Asian Journal of Plant Sciences
Year: 2011  |  Volume: 10  |  Issue: 1  |  Page No.: 60 - 66

Heritability and Correlation for Components of Crop Partitioning in Advanced Generations of Peanut Crosses

C. Jogloy, P. Jaisil, C. Akkasaeng, T. Kesmala and S. Jogloy    

Abstract: The rapid accumulation and conversion of the dry matter into harvestable yield under limited crop duration are preferable for peanut (Arachis hypogaea L.) grown in various cropping systems where intensified cropping systems are generally practiced. In these cropping systems, peanut genotypes with acceptable yield and shorter crop duration are required. The objectives of this study were to estimate the broad sense heritability for Crop Growth Rate (CGR), Pod Growth Rate (PGR), Partitioning Efficiency (PC) and reproductive duration in an advanced generation of segregating population of large-seeded type peanut and to investigate the relationship among these characters. Two-hundred breeding lines in the F6 generation of 10 peanut crosses (twenties for each cross) were assigned in a randomized complete block design with two replications. CGR, PGR, PC and RD were recorded at harvest. Heritability estimates for CGR (0.00-0.60) were lower than those for PGR (0.04-0.68), PC (0.00-0.82) and RD (0.17-0.90). Correlation coefficients among CGR, PGR and PC were positive and significant, whereas they were negatively and significantly correlated with RD. The results suggested that improvement of CGR, PGR, PC would be possible among studied materials and would result in lower reproductive duration and early maturity.

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