Application of microsatellites in wheat (Triticum aestivum L.) for studying genetic differentiation caused by selection for adaptation and use

For studying genetic differentiation caused by selection for adaptation and end-use, the allele frequencies of 42 microsatellites (MS), representative of the three wheat genomes, were analysed in a total of 60 wheat cultivars. The cultivars originate from three agroecological areas (AEAs) - Germany,...

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Bibliographic Details
Published in:Theoretical and applied genetics 2000-01, Vol.100 (2), p.242-248
Main Authors: STACHEL, M, LELLEY, T, GRAUSGRUBER, H, VOLLMANN, J
Format: Article
Language:English
Subjects:
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
Cluster analysis
Cultivars
Fundamental and applied biological sciences. Psychology
Genetic diversity
Genetics of eukaryotes. Biological and molecular evolution
Genomes
Polymorphism
Pteridophyta, spermatophyta
Software
Triticum aestivum
Vegetals
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Summary:For studying genetic differentiation caused by selection for adaptation and end-use, the allele frequencies of 42 microsatellites (MS), representative of the three wheat genomes, were analysed in a total of 60 wheat cultivars. The cultivars originate from three agroecological areas (AEAs) - Germany, Austria and Hungary - and represent equal numbers of 'quality wheats' and 'feed wheats' for each country. For the 42 loci, 202 alleles were detected using PAGE and silver staining. The average number of alleles per locus was 4.8, including four monomorphic loci. For 16 loci, null alleles were detected. Cluster analysis clearly differentiated the varieties according to the three AEAs and, within each AEA, into quality wheats from feed wheats. Analysis of variance revealed highly significant differences of distance data between AEAs as well as between quality groups. The correlation between genetic distance (GD) and pedigree data (coefficient of diversity, COD) was r ^sub s^=0.45. The results have proven the excellent resolving power of MS in varietal differentiation, which arises through breeding under specific environmental conditions, and for different end-use.[PUBLICATION ABSTRACT]
ISSN:0040-5752
1432-2242
DOI:10.1007/s001220050032