Correlation and Quantitative Trait Loci Analyses of Total Chlorophyll Content and Photosynthetic Rate of Rice(Oryza sativa) under Water Stress and Well-watered Conditions

作     者：Song-Ping Hu Ying Zhou Lin Zhang Xiu-Dong Zhu Lin Li Li-Jun Luo Guo-Lan Liu Qing-Ming Zhou 

作者机构：College of Resource and Environmental Science Jishou University Hunan 416000 China Shanghai Agrobiological Gene Center Shanghai 201106 China College of Agriculture Agricultural University of Hunan Changsha 410128 China 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2009年第51卷第9期

页      面：879-888页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Supported by the National Natural Science Foundation of China (30040025) Chinese Ministry of Science and Technology (2003AA207010 and 2004B17200) the Rockefeller Foundation, the Key Program of Nature Science Foundation of Hunan Province (090XHN) the Personnel Foundation of Jishou University 

主　　题：chlorophyll content photosynthetic rate quantitative trait loci rice water stress. 

摘      要：In order to explore the relevant molecular genetic mechanisms of photosynthetic rate （PR） and chlorophyll content （CC） in rice （Oryza sativa L.）, we conducted a series of related experiments using a population of recombinant inbred lines （Zhenshan97B x IRAT109）. We found a significant correlation between CC and PR （R = 0.19＊＊） in well-watered conditions, but no significant correlation during water stress （r = 0.08）. We detected 13 main quantitative trait loci （QTLs） located on chromosomes 1, 2, 3, 4, 5, 6, and 10, which were associated with CC, including six QTLs located on chromosomes 1, 2, 3, 4, and 5 during water stress, and seven QTLs located on chromosomes 2, 3, 4, 6, and 10 in well-watered conditions. These QTLs explained 47.39% of phenotypic variation during water stress and 56.19% in well-watered conditions. We detected four main QTLs associated with PR; three of them （qPR2, qPR10, qPR11） were located on chromosomes 2, 10, and 11 during water stress, and one （qPR10） was located on chromosome 10 in well-watered conditions. These QTLs explained 34.37% and 18.41% of the phenotypic variation in water stress and well-watered conditions, respectively. In total, CC was largely controlled by main QTLs, and PR was mainly controlled by epistatic QTL pairs.