Selection of Submergence Tolerant Homozygous Line by STS Marker and Twice Submergence Stress

作     者：LI Jin-jiang XIAO You-lun XIAO Guo-ying 

作者机构：Key Laboratory of Agro-Ecological Processes in Subtropical RegionInstitute of Subtropical Agriculture Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Key Laboratory of Agro-Ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of Sciences Hunan Plant Protection Institute College of Bioscience and Biotechnology Hunan Agricultural University 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2012年第11卷第12期

页      面：1940-1947页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the Knowledge Innovation Program of the Chinese Academy of Sciences(KSCX2-EW-N-01) 

主　　题：bentazon sensitivity photoperiod-sensitive and/or thermo-sensitive genic male sterile line rice SublA-1gene submergence tolerance STS marker 

摘      要：One sequence tagged site marker Subl-1 and twice submergence stress method were used in selection of submergence tolerant homozygous line from Sub-lBS, a submergence tolerant, bentazon sensitive and photoperiod-sensitive and/or thermo-sensitive genic male sterile line that developed by our laboratory. The results revealed that the original Sub-lBS was heterozygous in SublA-1 locus even though it was identical in almost all of agronomical traits and the segregation of SublA-1 was in accordance with Mendelian law based on chi-square test. And then the original Sub-IBS was divided into two groups： one was ofSublA-1 introgression and the other was not; and the two groups were tested by twice submergence stress method. After the first submergence stress that lasted for 12 d, the average plant heights were significant difference at the 1% level between the two groups. After recovery for 10 d, the second submergence stress sustained for 18 d was carried on; and the group with SublA-1 gene was found apparently tolerant than the other group in submergence tolerance.