Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

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

Varshney, R.K.ORCID: 0000-0002-4562-9131, Mahendar, T., Aruna, R., Nigam, S.N., Neelima, K., Vadez, V. and Hoisington, D.A. (2009) High level of natural variation in a groundnut (Arachis hypogaeaL.) germplasm collection assayed by selected informative SSR markers. Plant Breeding, 128 (5). pp. 486-494.

Link to Published Version: https://doi.org/10.1111/j.1439-0523.2009.01638.x
*Subscription may be required

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.

Item Type: Journal Article
Publisher: Blackwell Publishing
Copyright: © 2009 Blackwell Verlag GmbH
URI: http://researchrepository.murdoch.edu.au/id/eprint/63513
Item Control Page Item Control Page