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| Genetic Analysis of Segregation Distortion of Molecular Markers in wheat RIL Population |
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Abstract Abstract: Using a RIL population derived from a cross between a common wheat 3338 and spelt wheat Altgold, a genetic linkage map was constructed comprising of 287 out of totally 344 polymorphic markers （271 SSR and 63 EST-SSR markers）. Among the 334 polymorphic markers, 82 markers showed the significantly segregation distortion (P＜0.05), favoring either the maker alleles of female parent 3338(33, 40.2%) or male parent Altgold (49,59.8％). Segregation distortion markers distribution along the present molecular maps of wheat was far from uniform, with clusters of tightly linked loci and single markers. 6 segregation distortion regions (clusters of 3-6 makers) were detected on 5 chromosomes, indicating that possible causes for segregation deviation of molecular markers are gametic selection.
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Received: 05 March 2007
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