Molecular diversity among pigeonpea genotypes differing in response to pigeonpea sterility mosaic disease

Naik, S.J.S. and Gowda, M.B. and Venkatesha, S.C. and et al, . (2012) Molecular diversity among pigeonpea genotypes differing in response to pigeonpea sterility mosaic disease. Journal of Food Legumes, 25 (3). pp. 194-199.

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Abstract

Simple sequence repeats (SSRs) markers were used to study the parental polymorphism in pigeonpea genotypes differing in responses to pigeonpea sterility mosaic disease and a few agronomic traits. Polymorphic information content (PIC) of SSR markers ranged from 0.23–0.60, with an average of 0.43. The pair-wise similarity coefficient ranged from 0.59 to 0.80. Cluster analysis based on inter-genotype similarity coefficient segregated SMD resistant and susceptible genotypes into different groups suggesting the power of SSR markers to differentiate the genotypes with contrasting expression for response to pigeonpea sterility mosaic disease infection. The genotypes most polymorphic for responses to SMD with high polymorphism revealed by SSR markers were identified. These genotypes were suggested for developing mapping populations for use in localizing genomic regions controlling SMD resistance or for identifying the best recombinant inbred line(s) with a combination of higher grain yield and SMD resistance for direct use as a pure-line commercial variety.

Item Type: Article
Uncontrolled Keywords: Genetic diversity, Pigeonpea, Polymorphism, SSR markers, Sterility Mosaic Disease.
Author Affiliation: All India Co-ordinated Research Project on Pigeonpea, University of Agricultural Sciences, Bangalore-560065, India, Department of Genetics and Plant Breeding, University of Agricultural Sciences, Bangalore-560065, India
Subjects: Plant Protection
Crop Improvement
Divisions: Pigeonpea
Depositing User: Mr. SanatKumar Behera
Date Deposited: 23 Oct 2012 04:59
Last Modified: 23 Oct 2012 04:59
Official URL: http://www.indianjournals.com/ijor.aspx?target=ijo...
URI: http://eprints.icrisat.ac.in/id/eprint/8496

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