植物学报 ›› 2006, Vol. 23 ›› Issue (4): 395-401.

• 专题介绍 • 上一篇    下一篇

水稻大粒种质资源和遗传分析

马丽莲 郭龙彪 钱前   

  1. (1 中国水稻研究所国家水稻生物学重点实验室 杭州 310006) (2 中国农业科学院研究生院 北京 150030)
  • 收稿日期:2005-03-17 修回日期:2005-05-30 出版日期:2006-07-06 发布日期:2006-07-06
  • 通讯作者: 钱前

Germplasm Resources and Genetic Analysis of Large Grain in Rice

Lilian Ma, Longbiao Guo , Qian Qian   

  1. (1 State Laboratory for Rice Biology, China National Rice Research Institute, Hangzhou 310006) (2 Graduate School of Chinese Academy of Agricultural Sciences, Beijing 150030)
  • Received:2005-03-17 Revised:2005-05-30 Online:2006-07-06 Published:2006-07-06
  • Contact: Qian Qian

摘要: 谷粒重量是构成产量的三要素之一, 对提高水稻产量具有重要意义。本文概述了国内外水稻大粒种质资源的现状, 同时对粒重基因遗传分析的研究进展进行了综述。粒重是一个受多基因控制的数量性状, 目前定位的粒重数量性状位点至少达89个、精细定位1个粒重基因gw3.1和1个长粒基因Lk-4(t)以及克隆1个粒重基因GS3, 并在此基础上讨论了粒重在育种上的应用。

Abstract: Grain-weight is a major determinant factor of rice yield. We summarized the current status of large-grain rice germplasm resources and recent progress in genetic analysis of grain-weight genes. Grain-weight is a complex quantitative trait controlled by multi-genes. So far, 89 QTLs for grain-weight have been identified. A grain-weight gene gw3.1 and a grain-length gene Lk-4(t) have been fine-mapped and a grain-weight gene GS3 has been isolated. The breeding applications of grain-weight gene in rice are also discussed.