新引福建水稻种质资源遗传多样性比较分析

Comparative Analysis of Genetic Diversity of Newly Introduced Rice Germplasm in Fujian

对60份宁夏自育、福建新引、东北引进的水稻种质的遗传多样性进行了比较分析。结果表明:福建新引种质的遗传多样性指数明显小于宁夏自育种质和东北引进种质;宁夏自育种质与福建新引种质的遗传距离大,亲缘关系较远;宁夏自育种质与东北引进种质的遗传一致度高,亲缘关系更近。聚类分析表明,宁夏自育种质与东北引进种质相似性较高,融合度较高;福建新引种质与宁夏自育种质、东北引进种质之间的融合度均较低,集聚于相对独立的小类。福建新引种质与宁夏自育种质、东北引进种质的遗传差异性较大,亲缘关系较远,可进一步重点利用。

The genetic diversity of self-breeding,germplasm from Fujian and northeastern China,total of 60,was analyzed.The results showed that the genetic diversity index of germplasm from Fujian,was significantly lower than that of self-breeding germplasm and germplasm from northeastern China.The genetic distance between the self-breeding germplasm and the germplasm from Fujian was large and the genetic relationship was far.The genetic consistency between the self-bred varieties and the germplasm from northeastern China was higher and the genetic relationship was closer.Cluster analysis showed that the Ningxia germplasm and the germplasm from northeastern China had higher similarity;the degree of fusion was higher.The fusion degree was low between the germplasm from Fujian,Ningxia and northeastern China.The germplasm from Fujian was clustered in relatively independent small groups.The new germplasm from Fujian,compared with the germplasm from Ningxia and northeastern China,which had great genetic differences and distant genetic relationships.This study indicated that the germplasm from Fujian could be further utilized.