中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

两个中籼水稻品种的抽穗期遗传

顾兴友；顾铭洪   

  1. 扬州大学农学院，扬州 225009
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-07-10 发布日期:1997-07-10

Inheritance of Heading Time in Two Middle Indica Cultivars of Rice

Gu Xingyou; Gu Minghong   

  • Received:1900-01-01 Revised:1900-01-01 Online:1997-07-10 Published:1997-07-10

PDF

被引次数

38

摘要： 南京11和武进香籼均为中籼稻品种，F1生育期超(晚)亲优势极强。通过对F1、F2、BC1、BC2等世代在自然日长或短日照处理条件下抽穗期的考察，证明杂种超亲迟熟与双亲的3个感光性主基因位点的分化有关，三者以互补方式决定植株的强感光性；两亲本分别含有2对和1对互补基因，根据系谱分析双亲的互补基因分别来自我国华南或东南亚的水稻品种。

关键词: 抽穗期, 遗传, 感光性, 互补基因, 超亲优势

Abstract: Nanjing 11 and Wujinxiangxian are two middle indica cultivars from Jiangsu, China and the vegetative growing period of their F1 was too long to mature normaly in the locality. To investigate the genetic machanism of the transgression the heading time of the F1, F2, BC1, BC2 and F3 plant-lines from six F2 late mature plants were observed under natural or short day conditions. The observations showed that there existed the differentiations between the parents in three major gene loci controlling photoperiod, which conferred the F1 and their F2 late plants on intensive photosensitivity in the model of gene complementation , and that the two of the complementary genes were from Naming 11 and the other one from Wujinxiangxian. It was deduced that above genes in the cultivars originated from cultivars of South or Central China and Southeast Asia, respectively, based on the analysis of their pedigrees.

Key words: heading time, inheritance, photosensitivity, complementary genes, transgression