Isolation, Identification and Earliness Effect Analysis of Rice Dominant Earliness Gene Ef-cd

作     者：DENG Xiao-jian WANG Ping-rong LI Xiu-lan DONG Chun-lin YANG Zhi-rong 

作者机构：Rice Research Institute Sichuan Agricultural University Chengdu 611130 P.R.China College of Life Sciences Sichuan University Chengdu 610064 P.R.China 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2005年第4卷第8期

页      面：561-566页

学科分类：09[农学] 0901[农学-作物学] 

基　　金：the National Natural Science Foundation of China(30070469) 

主　　题：Rice Growth duration Earliness Dominant earliness gene Gene effect 

摘      要：Ef-cd gene is a dominant earliness gene located on the short arm of rice chromosome 3. In this paper, through continuous backcross, self-pollination and molecular marker assisted selection, individual Ef-cd gene was isolated and its nearly isogenic lines were constructed by using early-maturing indica line 6442S-7 as the donor parent, and by using latematuring indica line Minghui 63 （MH63）, Shuhui 881 （SH881） and Shuhui 527 （SH527） as the recurrent parents （genetic background）, respectively. Further, it was found out that Ef-cd gene could generally advance rice to head 11-14 d earlier. So, it was considered that Ef-cd gene played an important role in rapid developing early-maturing and super high-yielding rice varieties.