High level of natural variation in a groundnut (Arachis hypogaeaL.) germplasm collection assayed by selected informative SSR markers

R.K. Varshney; T. Mahendar; R. Aruna; S.N. Nigam; K. Neelima; V. Vadez; D.A. Hoisington

doi:10.1111/j.1439-0523.2009.01638.x

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High level of natural variation in a groundnut (Arachis hypogaeaL.) germplasm collection assayed by selected informative SSR markers

Journal article

Peer reviewed

High level of natural variation in a groundnut (Arachis hypogaeaL.) germplasm collection assayed by selected informative SSR markers

R.K. Varshney, T. Mahendar, R. Aruna, S.N. Nigam, K. Neelima, V. Vadez and D.A. Hoisington

Plant Breeding, Vol.128(5), pp.486-494

2009

DOI: https://doi.org/10.1111/j.1439-0523.2009.01638.x

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Abstract

The ability to identify genetic variation is indispensable for effective management and use of genetic resources in crop breeding. Genetic variation among 189 groundnut (Arachis hypogaea L.) accessions comprising landraces, cultivars, a mutant, advanced breeding lines and others (unknown genetic background) representing 29 countries and 10 geographical regions was assessed at 25 microsatellite or simple sequence repeat loci. A high number of alleles (265) were detected in the range of 3 (Ah1TC6G09) to 20 (Ah1TC11H06) with an average of 10.6 alleles per locus. The polymorphism information content value at these loci varied from 0.38 (Ah1TC6G09) to 0.88 (Ah1TC11H06) with an average of 0.70. A total of 59 unique alleles and 127 rare alleles were detected at almost all the loci assayed. Cluster analysis grouped 189 accessions into four clusters. In general, genotypes of South America and South Asia showed high level of diversity. Extraordinary level of natural genetic variation reported here provides opportunities to the groundnut community to make better decisions and define suitable strategies for harnessing the genetic variation in groundnut breeding.

Details

Title: High level of natural variation in a groundnut (Arachis hypogaeaL.) germplasm collection assayed by selected informative SSR markers
Authors/Creators: R.K. Varshney (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
T. Mahendar (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
R. Aruna (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
S.N. Nigam (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
K. Neelima (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
V. Vadez (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
D.A. Hoisington (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
Publication Details: Plant Breeding, Vol.128(5), pp.486-494
Publisher: Blackwell Publishing
Identifiers: 991005541569207891
Copyright: © 2009 Blackwell Verlag GmbH
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.96 QTL
Web Of Science research areas: Agronomy; Biotechnology & Applied Microbiology; Plant Sciences
ESI research areas: Plant & Animal Science