Sorghum Germplasm Resources Characterization and Trait Mapping

Upadhyaya, H D and Vetriventhan, M and Deshpande, S (2016) Sorghum Germplasm Resources Characterization and Trait Mapping. In: The Sorghum Genome. Compendium of Plant Genomes . Springer, pp. 77-94. ISBN 978-3-319-47787-9

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Sorghum is the fifth most important cereal crop mostly grown for food, feed, fodder, and bioenergy purposes, and a staple for over 500 million resource-poor people in marginal environments. Globally, over 236,000 sorghum germplasm accessions have been conserved in genebanks, of which the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), India and the Plant Genetic Resources Conservation Unit, Southern Regional Plant Introduction Station, University of Georgia, USDA-ARS, together conserve about 32 % of the total global sorghum collections. Germplasm diversity representative subsets such as core and mini core collections and a genotyping-based reference set have been established in sorghum providing access to large diversity. The sorghum mini core collection established at the ICRISAT is being widely used for identification of sources for resistance to various biotic and abiotic stresses, and for agronomic and grain nutritional traits. Large genetic and genomic resources are available in sorghum, and resequencing of diverse germplasm resources including the mini core collection and wild and weedy relatives will provide researchers opportunities to relate sequence variations with phenotypic traits of interest and their utilization in sorghum improvement. Genomewide association mapping studies have identified genomic regions that are associated with important agronomic traits and resistance to biotic and abiotic stresses. High-throughput phenotyping platforms/technologies are required for precise phenotyping to attain greater genetic gains. The current status of germplasm, its characterization and utilization has been summarized in this chapter.

Item Type: Book Section
Divisions: Research Program : Genetic Gains
Series Name: Compendium of Plant Genomes
Uncontrolled Keywords: Sorghum Germplasm Resources, Trait Mapping, Sorghum germplasm accessions, Sorghum mini core collection, Genomewide association mapping, Genetic gains, Genetic and genomic resources, Biotic Stress Resistance, Phenotypic Characterization
Subjects: Mandate crops > Sorghum
Others > Germplasm
Others > Plant Disease
Others > Gene Bank
Depositing User: Mr Ramesh K
Date Deposited: 06 Nov 2017 08:40
Last Modified: 06 Nov 2017 08:40
Acknowledgement: UNSPECIFIED
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