NDLI: Analysis of Microsatellite Diversity in Ethiopian Tetraploid Wheat Landraces

Content Provider	Springer Nature Link
Author	Teklu, Yifru Hammer, K. Huang, X.Q. Röder, M.S.
Copyright Year	2005
Abstract	The extent and patterns of microsatellite diversity in 141 Ethiopian tetraploid wheat landraces consisting of three species Triticum durum Desf., T. dicoccon Schrank and T. turgidum L. were analyzed using 29 microsatellite markers. A high level of polymorphism and a large number of alleles unique for each species were detected. Compared to emmer (T. dicoccon) and poulard (T. turgidum) wheats, a higher genetic diversity was observed in T. durum. The A-genome was more polymorphic than the B-genome in all the three species. Microsatellites with (GA) n -repeats had a higher number of alleles than (GT) n -repeats. A species pairwise comparison was made to determine the percentage of shared alleles and a large number of common alleles among species were observed. Average gene diversity, across the 29 microsatellite loci, was 0.684 for T. durum, 0.616 for T. dicoccon and 0.688 for T. turgidum. Genetic distances were lower between T. durum and T. turgidum (0.26) than between T. durum and T. dicoccon (0.34) or between T. turgidum and T. dicoccon (0.38). A significant correlation (p < 0.01) was found between the number of alleles per locus and the gene diversity in all the three species. Allelic frequency variation was highest between T. turgidum and T. dicoccon (10.62%) and lowest between T. durum and T. turgidum (4.86%). A genetic similarity coefficient of 0.34, 0.46 and 0.37 was found in T. durum, T. dicoccon, and T. turgidum, respectively. The dendogram, which was constructed on the basis of a similarity matrix using the UPGMA algorithm, distinguished all accessions represented in the study.
Starting Page	1115
Ending Page	1126
Page Count	12
File Format	PDF
ISSN	09259864
Journal	Genetic Resources and Crop Evolution
Volume Number	53
Issue Number	6
e-ISSN	15735109
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-10-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Genetic diversity Landraces Microsatellite markers Tetraploid wheats Triticum Plant Pathology Plant Physiology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Ecology, Evolution, Behavior and Systematics Agronomy and Crop Science

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