Genetic Diversity of Rice Germplasm Resources in Northeast Region of China

doi:10.7668/hbnxb.2009.03.036

Abstract

Abstract: The rice cultivars and lines which attended regional trials and represented the current situation of rice breeding in Northeast Region of China were selected as material to analyze genetic diversity and genetic relationship be2 tween different provinces and cultivars on rice by SSR markers. As a result,only 303 alleles were detected in 103 poly2 morphic loci with the average number of 2194 and the distribution of alleles was uneven. So the genetic diversityof rice in Northeast Region of China was narrow,significantly lower than others rice regions. The analysis of genetic diversity be2 tween different chromosomes showed that the polymorphic loci distribution of Chr. 6,Chr. 9 and Chr. 11 was evener and the polymorphism information content was also more than others chromosomes. The homozygosity of three provinces,Hei2 longjiang was highest,Jilin was secondary and Liaoning was lowest. The degree of genetic diversity was in order of Hei2 longjiang >Jilin >Liaoning. The result of genetic cluster analysis indicated that there was the closer genetic relationship between Heilongjiang and Jilin,correspondingly Liaoning was more different.

Key words: Rice, The Northeast region, Germplasm resources, Simple2sequence2repeat, Genetic diversity

CLC Number:

S511.03

CHEN Ying hua, LI Hong yu, HoU Yu ming, XU Zheng jin, YUAN Yuan, LI Mao bai. Genetic Diversity of Rice Germplasm Resources in Northeast Region of China[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(3): 165-173. doi: 10.7668/hbnxb.2009.03.036.

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