作物学报2000，Vol.26Issue(4)：450-454,5.
我国中籼杂交稻亲本的DNA变异性研究
DNA Variance of Parental Lines for Semilate Indka Hybrid Rice in China
何光华 1裴炎 2杨光伟 1谢戎1
作者信息
- 1. 西南农业大学生物技术中心,重庆,北碚,400716
- 2. 四川省农业科学院水稻高粱研究所,四川,泸州,646100
- 折叠
摘要
Abstract
RAPD analysis for genetic diversity was conducted on 42 backbone parental lines in Indica hybrid rice breeding with 9 primers selected from 250 random primers．The resultsindicated that the genetic diversity in maintainer and restoring lines was small． The geneticsimilarity between them was up to 87 percent，and the genetic distance was 0．1377． In general，new maintainer lines were more different from Zhenshan 97 B compared With the new restoringlines which did not show obvious discrimination to Minghui 63．The limited genetic differencebetween parental lines，especially in restoring lines，was an important reason for the stagnantyield in cytoplasmic male sterility hybrid rice．Therefore expanding the genetic divershy and difference among parental materials was a key task in the present“three-lnes”cytoplasmic malesterility Indca hybrid rice breeding and the utilization of heterosis between subspecies was in anurgent need．关键词
杂交水稻/骨干亲本/RAPD/遗传差异Key words
Hybrid rice/Backbone parental/RAPD/Genetic difference分类
农业科技引用本文复制引用
何光华,裴炎,杨光伟,谢戎..我国中籼杂交稻亲本的DNA变异性研究[J].作物学报,2000,26(4):450-454,5.
