Assessing genetic diversity, allelic richness and genetic relationship among races in ICRISAT foxtail millet core collection

Vetriventhan, M and Upadhyaya, H D and Anandakumar, C R and Senthilvel, S and Parzies, H K and Bharathi, A and Varshney, R K and Gowda, C L L (2012) Assessing genetic diversity, allelic richness and genetic relationship among races in ICRISAT foxtail millet core collection. Plant Genetic Resources (First View Article), 10 (3). pp. 214-223. ISSN 1479-2621

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Abstract

Foxtail millet (Setaria italica (L.) P. Beauv.) is an ideal crop for changing climate and food habits of peoples due to its short duration, high photosynthetic efficiency, nutritional richness and fair resistance to pest and diseases. However, foxtail millet yields are low mainly due to the lack of effort for its improvement and the lack of proper utilization of existing genetic variability. To enhance the use of diverse germplasm in breeding programmes, a core collection in foxtail millet consisting of 155 accessions was established. Core collection accessions were fingerprinted using 84 markers (81 simple sequence repeats (SSRs) and three Expressed Sequence Tag (EST)-SSRs). Our results showed the presence of greater molecular diversity in the foxtail millet core collection. The 84 markers detected a total of 1356 alleles with an average of 16.14 alleles (4–35) per locus. Of these, 368 were rare alleles, 906 common alleles and 82 the most frequent alleles. Sixty-one unique alleles that were specific to a particular accession and useful for germplasm identification were also detected. In this study, the genetic diversity of foxtail millet was fairly correlated well with racial classification, and the race Indica showed a greater genetic distance from the races Maxima and Moharia. The pairwise estimate of dissimilarity was >0.50 except in 123 out of 11,935 pairs which indicated a greater genetic variability. Two hundred and fifty pairs of genetically most diverse accessions were identified. This large molecular variation observed in the core collection could be utilized effectively by breeders or researchers for the selection of diverse parents for breeding cultivars and the development of mapping populations.

Item Type: Article
Divisions: UNSPECIFIED
CGIAR Research Programs: UNSPECIFIED
Uncontrolled Keywords: core collection; germplasm; molecular diversity; races; Setaria italica; simple sequence repeat
Subjects: Mandate crops > Millets
Others > Genetics and Genomics
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 31 Oct 2012 03:23
Last Modified: 21 Aug 2013 04:12
URI: http://oar.icrisat.org/id/eprint/6202
Official URL: http://dx.doi.org/10.1017/S1479262112000287
Projects: BMZ/GTZ project on ‘Sustainable conservation and utilization of genetic resources of two underutilized crops – finger millet and foxtail millet – to enhance productivity, nutrition and income in Africa and Asia’
Funders: Federal Ministry for Economic Cooperation and Development, Germany
Acknowledgement: The authors gratefully acknowledge the financial support of the BMZ/GTZ project on ‘Sustainable conservation and utilization of genetic resources of two underutilized crops – finger millet and foxtail millet – to enhance productivity, nutrition and income in Africa and Asia’ funded by the Federal Ministry for Economic Cooperation and Development (BMZ), Germany.
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