Estimates of Epistasis for Diverse Peanut Cultivars

Isleib, T.G. and Wynne, J.C. and Rawlings, J.O. (1978) Estimates of Epistasis for Diverse Peanut Cultivars. Peanut Science, 5 (2). pp. 106-108.

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Abstract

Progeny from a six-parent half-diallel of diverse peanut (Arachis hypogaea L.) cultivars were evaluated for the F1 through F5 generations for presence of epistatic effects. Significant variability attributable to specific combining ability (SCA) persisted over generations for yield and other seed characters. Epistasis was indicated since dominance could account for little of the variance due to SCA in the F5 generation. Estimates of dominance and epistatic variance components were obtained using an iterative weighted least squares procedure. For all characters measured, estimates of epistatic variance were larger than those of dominance variance. It was concluded that considerable epistatic variance may exist in populations derived from crosses of diverse peanut lines.

Item Type: Article
Uncontrolled Keywords: Arachis hypogaea, genetic variance, combining ability, exotic germplasm
Author Affiliation: North Carolina State University, Raleigh, NC 27650
Subjects: Plant Production
Crop Improvement
Divisions: Groundnut
Depositing User: Mr. SanatKumar Behera
Date Deposited: 09 Aug 2012 06:36
Last Modified: 09 Aug 2012 06:38
Official URL: http://dx.doi.org/10.3146/i0095-3679-5-2-12
URI: http://eprints.icrisat.ac.in/id/eprint/7266

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