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《Journal of Agricultural Biotechnology》 2007-05
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Genetic Analysis of Segregation Distortion of Molecular Markers in Wheat RIL Population

LIU Gang1,XU Sheng-bao1,NI Zhong-fu2,LI Jing2,QIN Dan-dan2,DOU Bing-de3,PENG Hui-ru2,SUN Qi-xin2(1.College of Agriculture,Xinjiang Agricultural University,Urumqi 830052,China;2.Department of Plant Breeding,China Agricultural University,Beijing 100094,China;3.Institute of Plant Biotechnology,Huaiyin Teachers College,Huaian 223300,China)  
Using a RIL population derived from a cross between a common wheat(Triticum aestivum)3338 and Spelt wheat(T.spelta)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(P0.05),favoring either the marker alleles of female parent 333 8(33,40.2%)or male parent Altgold(49,59.8%).Segregation distortion marker distribution along the present molecular maps of wheat was far from uniform,with clusters of tightly linked loci and single marker.Six segregation distortion regions(clusters of 3~6 markers)were detected on 5 chromosomes,indicating that possible causes for segregation deviation of molecular markers are gametic selection.
【Fund】: 国家重点基础研究发展规划项目(973)项目(No.2001CB1088和No.2007CB1090)资助
【CateGory Index】: S512.1
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