栽培稻与普通野生稻遗传距离估测和聚类初报

PRIMARY REPORT OF CLUSTERING AND GENETIC DISTANCE ESTIMATION BETWEEN RICE CULTIVARS AND WILD RICE VARIETIES

摘要: 对１５个栽培稻和１７个普通野生稻的１９个性状进行了遗传距离及聚类分析。结果表明，栽培稻与普通野生稻是相互有联系的两大类群；源于相同地域分布的普通野生稻未必具有相近的亲缘；根据遗传距离的大小，聚为７个生态类型，遗传距离反映了类型间的亲缘关系，是选择杂交亲本的重要参数，对野生稻种资源的利用提供一定的依据。

Abstract: Genetic distances estimation and clustering analysis were made on the base of 19 characteristics of 15 rice cultivars and 17 wild rice varieties.The results Showed that rice cultivars and wild rice varieties were two categories.Common wild rice varieties from same regional distribution were not necessarily closely related in consanguinity.Seven ecodemes were clustered according to the values of genetic distances which are important genetic parameters and can measure the consanguinity among ecodemes.The results mentioned above provided the theoretical basis for utilization of germ plasm resource and can be used in se-lecting parents for hybridization breeding.