利用SSR分子标记划分杂交籼稻亲本群的研究(英文)

被引：21

作者：

王胜军

万建民

陆作楣

机构：

[1] 南京农业大学作物遗传与种质创新国家重点实验室

来源：

作物学报 | 2006年 / 10期

关键词：

杂交籼稻; SSR; 杂种优势; 亲本群; 聚类分析;

D O I：

暂无

中图分类号：

S511.21 [];

学科分类号：

0901 ;

摘要：

杂种优势群和杂种优势利用模式可以为植物的杂种优势利用提供重要信息。与玉米相比,水稻杂种优势群的研究相对薄弱。本研究利用72对SSR引物对我国47个杂交籼稻骨干亲本进行了类群划分。共检测出328个等位基因变异,每对引物检测等位基因2～13个,平均4.56个;引物的多态性信息量(PIC)范围为0.120～0.878,平均值为0.567。材料之间的遗传相似系数(GS)范围在0.633～0.928,平均为0.741。用类平均法(un-weighted pair-group method using anarithmetic average)将亲本材料划分为保持系群、温敏核雄性不育系群、恢复系群,其中保持系群和恢复系群又各分为3个亚群,分群结果基本符合系谱信息。并结合杂交水稻生产实践提出了7种杂种优势组合配组模式。分子标记是一种划分杂交籼稻亲本群的有效途径,本研究结果对杂交籼稻的亲本选配具有一定指导意义。

引用

页码：1437 / 1443

页数：7

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