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、BC2、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。
Naming 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.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1997年第3期151-154,共4页
Chinese Journal of Rice Science
关键词
中籼
水稻
品种
抽穗期
遗传
感光性
互补基因
超亲优势
heading time, inheritance, photosensitivity, complementary genes, transgression