Status, genetic diversity and gaps in sorghum germplasm from South Asia conserved at ICRISAT genebank

Upadhyaya, H D and Reddy, K N and Vetriventhan, M and Gumma, M K and Ahmed, M I and Thimma Reddy, M and Singh, S K (2016) Status, genetic diversity and gaps in sorghum germplasm from South Asia conserved at ICRISAT genebank. Plant Genetic Resources. pp. 1-12. ISSN 1479-2621

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Abstract

The genebank at ICRISAT, India that serves as a world repository for sorghum germplasm conserves 39,234 accessions from 93 countries, including 6249 from seven South Asian countries: Afghanistan (6), Bangladesh (9), India (6101), the Maldives (10), Nepal (8), Pakistan (90) and Sri Lanka (25). A total of 5340 georeferenced accessions were used to identify gaps, and 5322 accessions that were characterized at ICRISAT were used to assess the diversity in the collection. Accessions of basic races varied widely than those of intermediate races for flowering in the postrainy season, plant height in both rainy and postrainy seasons, panicle exsertion, panicle length and width, seed size and 100 seed weight. Landraces from India were late flowering, tall and produced stout panicles and larger seeds. Landraces from Pakistan flowered early in both seasons and produced stout panicles and those from Sri Lanka were late flowering and tall in both seasons, produced more basal tillers and stout panicles. A total of 110 districts in 20 provinces of India, 13 districts in three provinces of Pakistan, three districts in Bangladesh and five districts in four provinces of Sri Lanka were identified as geographical gaps. Sorghum bicolor subsp. verticilliflorum, S. halepense and S. propinquum were identified as taxonomic gaps in the collection. Therefore, it is suggested to explore the districts identified as gaps to enrich the variability in the world collection of sorghum at ICRISAT.

Item Type: Article
Divisions: RP-Dryland Cereals
CRP: CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords: Accession, Collection, Genetic resources, Geographical gap, Landrace, Genebank, ICRISAT, Sorghum germplasm
Subjects: Mandate crops > Sorghum
Others > Germplasm Collection
Others > Gene Bank
Depositing User: Mr Ramesh K
Date Deposited: 16 Sep 2016 09:23
Last Modified: 16 Sep 2016 09:23
URI: http://oar.icrisat.org/id/eprint/9677
Official URL: http://dx.doi.org/10.1017/S147926211600023X
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: Authors sincerely acknowledge the contribution of all former and present staff of genebank at ICRISAT, Patancheru, India in collection, assembly, conservation, characterization and documentation of sorghum germplasm.
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