Genetic base and diversity in groundnut genotypes

Badigannavar, A.M. and Kale, D.M. and Murty, G.S.S. (2002) Genetic base and diversity in groundnut genotypes. Plant Breeding , 121 (4). pp. 348-353.

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Abstract

For the last four decades, genetic improvement of groundnut by induced mutation and recombination breeding at the Bhabha Atomic Research Centre, Trombay, Mumbai, India, has led to the isolation of 61 distinct genotypes, of which eight have been released for commercial cultivation. The present study was undertaken to quantify the genetic base and study the diversity through coefficient of parentage and cluster analysis. Eight ancestors have contributed to the entire genetic base; of these, 'Spanish Improved', through its induced mutants and mutant derivatives, accounts for 67.7% coefficient of parentage, leading to a narrow genetic base. However, the genotypes used in this study exhibited considerable variability for vegetative, reproductive, and agronomic traits. Cluster analysis indicated no relationship between clustering pattern and subspecies among genotypes during rainy or summer seasons. Despite this narrow base, greater diversity could be possible following judicious use of mutation and recombination breeding to bring about genetic improvement

Item Type: Article
Additional Information: SNNigam collections
Author Affiliation: Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
Subjects: Crop Improvement
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 08 Sep 2013 12:57
Last Modified: 08 Sep 2013 12:57
Official URL: http://dx.doi.org/10.1046/j.1439-0523.2002.00710.x
URI: http://eprints.icrisat.ac.in/id/eprint/11648

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