<FONT face="Verdana">Evaluation on Genetic Diversity of the Commercial Rice Varieties in Northeast China by Microsatellite Markers<BR></FONT>

LI Hongyu,HOU Yuming,CHEN Yinghua,XU Zhengjin*,CHEN Wenfu,ZHAO Minghui,MA Dianrong,XU Hai,WANG Jiayu

doi:10.3969/j.issn.1001-7216.2009.04.08

Chinese Journal OF Rice Science >

2009 , Vol. 23 >Issue 4: 383 - 390

DOI: https://doi.org/10.3969/j.issn.1001-7216.2009.04.08

研究报告

Evaluation on Genetic Diversity of the Commercial Rice Varieties in Northeast China by Microsatellite Markers

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Rice Institute, Shenyang Agricultural University/Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture/Key Laboratory of Northern Japonica Rice Breeding of Liaoning, Shenyang 110161, China; *Corresponding author， E-mail: xuzhengjin@126.com

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2009-07-10

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Abstract

Twentyfour phenotypic traits and 53 SSR markers were used to reveal the genetic diversity of 107 commercial rice varieties in Northeast China. The phenotypic genetic diversity was higher than that at DNA level. Among varieties in different released years，there was high similarity in genetic diversity between morphological markers and SSR markers, but no similarity in genetic diversity among varieties from different provinces. There existed a scarcity of genetic diversity in the Northeast China commercial rice population. With advance of years, some old alleles disappeared and some new ones appeared, and the new ones were more than the old ones. Genetic diversity of commercial rice varieties in the Northeast China was in the order of Heilongjiang> Jilin> Liaoning. Because of frequent interregional introduction of varieties, the genetic differentiation was not obvious among regions, and mainly came from genotype difference among varieties. There were some mutual complementary alleles among provincial subpopulations, with the largest number between Heilongjiang and Liaoning. There existed or lacked some specific alleles among varieties in different provinces and years. The commercial rice varieties in Northeast China were clustered into 5 groups and each group included the varieties in at least two periods or provinces.

Key words： Northeast China; rice; commercial variety; genetic diversity; simple sequence repeat

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LI Hongyu,HOU Yuming,CHEN Yinghua,XU Zhengjin*,CHEN Wenfu,ZHAO Minghui,MA Dianrong,XU Hai,WANG Jiayu . Evaluation on Genetic Diversity of the Commercial Rice Varieties in Northeast China by Microsatellite Markers
[J]. Chinese Journal OF Rice Science, 2009 , 23(4) : 383 -390 . DOI: 10.3969/j.issn.1001-7216.2009.04.08

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