水稻一多拷贝微卫星DNA多态性分析  

Genetic Diversity of Rice Detected by a Multiple Copy Microsatellite DNA Marker

作　　者：杨官品[1,2] M.A.SaghaiMaroof 张启发 秦昌华[1,2] 罗忠训 

机构地区：[1]湖北大学生命科学系 [2]华中农业大学作物遗传改良国家重点实验室

出　　处：《遗传》1998年第2期27-30,共4页Hereditas（Beijing)

摘　　要：用一个多拷贝微卫星ＤＮＡ标记分析了２３８份栽培水稻的遗传多样性及遗传多样性从农家品种到现代栽培品种的动态变化。共检测出１６种长度变异类型和３２种表现型，但长度变异类型数、表现型数和表现型多样性水平在农家品种和现代栽培品种间没有显著差别。该标记在遗传资源评价和ＤＮＡ指纹图谱建设中有重要的应用价值，也是研究环境或人工对多拷贝基因选择作用的一个良好模型。The genetic diversity of 238 cultivated rice and its difference between landraces and modern cultivars have been assayed using a multiple copy microsatellite DNA marker. Although 16 length variants and 32 phenotypes were found in all accessions, no significant differences in number of length variants, number of phenotypes and phenotypic diversity were detected between landraces and modern cultivars. This marker is of great value in evaluating genetic germplasm and constructing DNA fingerprints of rice and provides an elite model for tracing effectiveness of natural and artificial selection on multiple copy genes.

关 键 词：水稻 微卫星DNA标记 遗传多样性 

分 类 号：S511.103.2[农业科学—作物学]