RICE SCIENCE ›› 2011, Vol. 18 ›› Issue (1): 71-74 .

• Short Communication • Previous Articles     Next Articles

Detection of QTL for Cold Tolerance at Bud Bursting Stage Using Chromosome Segment Substitution Lines in Rice (Oryza sativa)

LIN Jing, ZHU Wen-yin, ZHANG Ya-dong, ZHU Zhen, ZHAO Ling, CHEN Tao, ZHAO Qing-yong, ZHOU Li-hui, FANG Xian-wen, WANG Yan-ping, WANG Cai-lin   

  1. Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Jiangsu High Quality Rice R & D Center, Nanjing Branch of China National Center for Rice Improvement, Research Center for Protection and Utilization of Agricultural Germplasm Resource in Jiangsu Province, Nanjing 210014, China
  • Received:2010-06-04 Revised:2010-09-01 Online:2011-03-28 Published:2011-07-11
  • Contact: WANG Cai-lin
  • Supported by:

    the Special Program for Rice Scientific Research in Ministry of Agriculture, China (Grant No. nyhyzx 07-001-006), Special Funds for Construction of Modern Agricultural Industry R & D System, Self-directed Innovation Fund of Agricultural Science and Technology in Jiangsu Province, China (Grant No. CX [09] 634).

Abstract: The cold tolerance at the bud bursting stage (CTB) was evaluated at 5°C by using a set of 95 chromosome segment substitution lines (CSSLs) derived from an indica rice 9311 and a japonica rice Nipponbare with a genetic background of 9311. The result showed that six CSSLs had slightly stronger effect on CTB than 9311. Total four quantitative trait loci (QTLs) for CTB were preliminary mapped on chromosomes 5 and 7 by substitution mapping. qCTB-5-1, qCTB-5-2 and qCTB-5-3 were mapped in the region of RM267–RM1237, RM2422–RM6054 and RM3321–RM1054, which were 21.3 cM, 27.4 cM and 12.7 cM in genetic distance on rice chromosome 5, respectively. qCTB-7 was mapped in a 6.8-cM region of RM11–RM2752 on rice chromosome 7.

Key words: chromosome segment substitution lines, cold tolerance, bud bursting stage, substitution mapping, rice