Highly informative genic and genomic SSR markers to facilitate molecular breeding in cultivated groundnut (Arachis hypogaea)

Pandey, M K and Gautami, B and Jayakumar, T and Sriswathi, M and Upadhyaya, H D and Gowda, M V C and Radhakrishnan, T and Bertioli, D J and Knapp, S J and Cook, D R and Varshney, R K (2012) Highly informative genic and genomic SSR markers to facilitate molecular breeding in cultivated groundnut (Arachis hypogaea). Plant Breeding, 131 (1). pp. 139-147. ISSN 1439-0523

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With an objective of identification of highly informative set of SSR markers in cultivated groundnut (Arachis hypogaea L.), a total of 4485 markers were used for screening using a set of 20 parental genotypes of 15 mapping populations. Although 3582 (79.9%) markers provided scorable amplification, only 1351 (37.3%) markers showed polymorphism. Polymorphism information content (PIC) value ranged from 0.10 (GM742) to 0.89 (S009) with an average of 0.31. Similarly, number of alleles ranged from 2 to 14 with an average of 3.2 alleles. In general, the SSR markers based on dinucleotide repeats displayed higher PIC value and number of alleles. Based on these polymorphism features, 199 markers with >0.50 PIC values have been identified. Polymorphism features of these markers along with the primer sequences, for the first time, for a total of 946 SSR markers have been provided. It is anticipated that the identified set of highly informative markers, instead of starting from the random set of SSR markers, should be very useful to initiate molecular genetics and breeding studies in cultivated groundnut.

Item Type: Article
Uncontrolled Keywords: groundnut;molecular breeding;SSR markers;PIC value;genetic diversity
Subjects: Mandate crops > Groundnut
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 12 Nov 2011 07:10
Last Modified: 17 Oct 2013 10:49
URI: http://oar.icrisat.org/id/eprint/3913
Official URL: http://dx.doi.org/10.1111/j.1439-0523.2011.01911.x
Funders: Indian Council of Agricultural Research , CGIAR Generation Challenge Programme
Acknowledgement: Thanks are due to Mr. B. J. Moss, Mr. G. Somaraju and Mr. Abdul Gafoor for their technical help in conducting laboratory experiments. Financial support from National Fund of Indian Council of Agricultural Research (NBFSRA), New Delhi, India, and Tropical Legume IObjective 1 project of CGIAR Generation Challenge Programme (http://www.generationcp.org), Mexico, and Bill and Melinda Gates Foundation (BMGF), USA, is gratefully acknowledged.
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