论文

东北地区水稻种质资源遗传多样性分析

  • 陈英华 ,
  • 李红宇 ,
  • 侯昱铭 ,
  • 徐正进 ,
  • 袁媛 ,
  • 李茂柏
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  • 沈阳农业大学水稻研究所, 辽宁省北方粳稻育种重点开放实验室.农业部作物生理生态遗传育种重点开放实验室, 辽宁沈阳 110161
陈英华(1983-), 男, 辽宁沈阳人, 在读硕士, 主要从事东北水稻遗传多样性研究.

收稿日期: 2009-02-16

  网络出版日期: 2014-10-14

基金资助

国家自然科学基金(30871468)

Genetic Diversity of Rice Germplasm Resources in Northeast Region of China

  • CHEN Ying hua ,
  • LI Hong yu ,
  • HoU Yu ming ,
  • XU Zheng jin ,
  • YUAN Yuan ,
  • LI Mao bai
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  • Key Laboratory of Crop Physiology,Ecology,G enetics and Breeding,Ministry of Agriculture,K ey Laboratory of Northern Japonica Rice Breeding of Liaoning Province,Shenyang Agricultural University,Shenyang 110161,China

Received date: 2009-02-16

  Online published: 2014-10-14

摘要

以能够代表东北地区水稻当前育种动态的区域试验品种(系)为试材,利用SSR标记分析了东北稻区水稻种质资源地区问和品种间的遗传多样性差异以及亲缘关系.结果表明,东北稻区整体的遗传多样性狭窄,明显低于国内其他稻区水平.在103个多态性位点上共检测到303个等位基因,平均每个位点只有2.4个,并且等位基因分布也极不均匀.不同染色体问的遗传多样性分析结果表明,Chr.6、Chr.、Chr.11三条染色体的多态性位点分布较均匀且多态性信息含量也较多,整体遗传多样性丰富程度高于其他染色体.结果还发现,三个省份中黑龙江地区的品种整体纯合程度最高的,吉林次之,辽宁最低.东北三省水稻遗传多样丰富程度排序是:黑龙江>吉林>辽宁.通过遗传聚类分析显示,吉林与黑龙江的整体亲缘关系较近,相对地与辽宁较远.

本文引用格式

陈英华 , 李红宇 , 侯昱铭 , 徐正进 , 袁媛 , 李茂柏 . 东北地区水稻种质资源遗传多样性分析[J]. 华北农学报, 2009 , 24(3) : 165 -173 . DOI: 10.7668/hbnxb.2009.03.036

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.

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