Enhancing the value of legume genetic resources using core/mini core and applied genomic tools

Upadhyaya, H D and Dwivedi, S L and Varshney, R K and Gowda, C L L and Bhattacharjee, R and Hoisington, D A and Vadez, V (2009) Enhancing the value of legume genetic resources using core/mini core and applied genomic tools. In: International conference on Current trends in Biotechnology, 19-21 Feb. 2009, Meerut, India.

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Grain legumes are rich resource of dietary proteins, minerals, and vitamins; however, productivity remains low, narrow genetic base of the cultivars being one of the several reasons to low productivity. Worldwide approximately half a million legume germplasm acceSSIOns are preserved in genebanks. However, there has been limited use of these resources in crop breeding. Core collection (10% of the entire collection), a subset of accessions representing at least 70% of the genetic variation in the entire collection of the species, has been suggested as a gateway to enhance utilization of germpJasm. Core and mini core (10% of core) collections have been reported in several legumes that when evaluated identified new sources of variation for agronomic traits including resistance to biotic and abiotic stresses. Legumes genomics resources in the past lagged behind cereals. However, situation dramatically changed with emergence of Medicago truncatula, Lotus japonicus, and Glycine max as models for comparative genomics within legume family. Several genomic resources including markers, maps, transcriptomics, proteomics, metabolomics, and bioinformatics resources have been developed. These resources in model plants will not only allow investigation of basic processes important to legumes, but also open the possibility to transfer those processes to- or locate them in other crop species including several legumes. Several genomic projects are developing tools for less-studied legumes which are economically important in Africa and Asia. These genetic and genomic resources represent major milestones in the history of legumes research, which will help understand the evolutionary events that shaped legume genomes, and provide avenues for genetic enhancement for sustainable agriculture.

Item Type: Conference or Workshop Item (Paper)
Subjects: Others > Food Legumes
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 22 Nov 2011 06:22
Last Modified: 22 Nov 2011 06:22
URI: http://oar.icrisat.org/id/eprint/4209
Acknowledgement: UNSPECIFIED
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