辽宁省水稻新品种遗传多样性分析

Analysis on Genetic Diversity of New Rice Varieties in Liaoning

对辽宁省2006年～2009年审定的41个水稻新品种进行性状分析与系谱分析,结果显示,41个水稻品种多数性状上差异不大,品种间的差异性主要体现在有效穗数、总粒数、垩白度、胶稠度等性状及性状结合的不同上。同时41个品种可划分为5个类群,类群间具有一定的差异性,但有43.9%的品种归为一类。63.4%的水稻新品种具有日本品种亲缘,39%的新品种源自于丰锦衍生系统,14.6%的新品种源自于盐丰47衍生系统。表明,辽宁省近年来育成的水稻品种亲缘关系较近、品种间遗传相似度较高、品种遗传多样性较低。

Character and genealogy analysis were done on 41 new rice varieties from 2006 to 2009 in Liaoning,the results indicated that the main otherness of varieties were effective panicle,chalkiness,gel consistency and their traits.The varieties were divided into 5 different groups and 43.9% of varieties belongs to one category.64.3% of new varieties had genetic relationship of Japanese variety,39% of new varieties belonged to derivative systems of fengjin,14.6% of new varieties belonged to derivative systems of yanfeng47.Therefore,the new varieties which breed in Liaoning had a relatively closer affinity,a higher genetic similarity and lower genetic diversity.