Document Detail

Patterns of AFLP variation in a core subset of cultivated hexaploid oat germplasm.
MedLine Citation:
PMID:  15940508     Owner:  NLM     Status:  MEDLINE    
Many core collections have been developed from large collections of crop germplasm, but most of these have not been characterized, particularly using molecular techniques, for germplasm management and utilization. We have attempted to characterize a structured sample representing a world collection of 11,622 cultivated hexaploid oat accessions in the hope of understanding the genetic structure of the world collection. The amplified fragment length polymorphism (AFLP) technique was applied to screen 670 accessions representing 79 countries and one group of uncertain origin. For each accession, 170 AFLP polymorphic bands detected by five AFLP primer pairs were scored. Analyses of the AFLP data showed the effectiveness of the stratified sampling applied in capturing country-wise AFLP variation. The frequencies of polymorphic bands ranged from 0.11 to 0.99, with an average of 0.72. The majority (89.9%) of the AFLP variation resided within accessions of each country, and only 6.2% of the AFLP differences existed among accessions of major geographic regions. Accessions from the Mediterranean region were the most distinct, while those from Russia and the USA were the most diverse. The two distinct groups that were observed were separated largely on the basis of common oat and red oat. Red oat was genetically more diverse than its common and hull-less counterparts, and hull-less oat was more related to common oat than red oat. Landrace and non-landrace accessions displayed similar AFLP variation patterns. These patterns are significant for understanding the domestication of cultivated oat and are useful in classifying the intraspecific diversity of oat germplasm, developing specific core subsets of the oat collection, and exploring new sources of genes for oat improvement.
Yong Bi Fu; Gregory W Peterson; David Williams; Ken W Richards; Jennifer Mitchell Fetch
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Publication Detail:
Type:  Journal Article     Date:  2005-06-07
Journal Detail:
Title:  TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik     Volume:  111     ISSN:  0040-5752     ISO Abbreviation:  Theor. Appl. Genet.     Publication Date:  2005 Aug 
Date Detail:
Created Date:  2005-08-31     Completed Date:  2005-10-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0145600     Medline TA:  Theor Appl Genet     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  530-9     Citation Subset:  IM    
Plant Gene Resources of Canada, Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, S7N 0X2, SK, Canada.
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MeSH Terms
Avena sativa / genetics*
DNA, Plant / genetics*
Genetic Markers*
Genetic Variation*
Random Amplified Polymorphic DNA Technique
Reg. No./Substance:
0/DNA, Plant; 0/Genetic Markers

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