作物学报2009，Vol.35Issue(12)：2304-2308,5.DOI:10.3724/SP.J.1006.2009.02304
两个水稻叶色突变体的光合特性研究
Characteristics of Photosynthesis in Two Leaf Color Mutants of Rice
摘要
Abstract
Two leaf color mutants, ygl5 and pygl1, were identified from the progeny of Jinhui 10 treated with EMS, and Jinhui 10 was an excellent restorer line bred in the Rice Research Institute of Southwest University. This paper reported their photosynthetic parameters and ultra-structure of chloroplast. Compared with the original parent, both mutants had a decline content of chlorophylls significantly, especially in total chlorophylls for ygl5 and in chlorophyll b for the pygl1. Photosynthetic and chlorophyll fluorescence parameters were determined by L1-6400, the results showed that the net photosynthetic rate (P_n), transpiration rate (T_r) and stomatal conductance (G_s) were higher in the mutants, with higher light compensation point (LCP) and lower light saturation point (LSP) as well as lower CO_2 compensation point (CCP) and CO_2 saturation point (CSP). Compared with Jinhui 10, the mutants displayed less chloroplast grana and higher optional maximal photochemical efficiency of PS II (F_v/F_m)> actual photochemical efficiency of PSII (Φ_(PSII)), and photochemical quenching (q_P), suggesting that the mutants have higher light energy capture and conversion efficiencies as well as the electron transport efficiency.关键词
水稻/叶色突变体/光合速率/叶绿素荧光/叶绿体超微结构Key words
Oryza sativa L./ Leaf color mutants/ Photosynthesis rate/ Chlorophyll fluorescence/ Chloroplast ultra-structure分类
农业科技引用本文复制引用
吕典华,宗学凤,王三根,凌英华,桑贤春,何光华..两个水稻叶色突变体的光合特性研究[J].作物学报,2009,35(12):2304-2308,5.基金项目
本研究由国家自然科学基金项目(30800598)和重庆市水稻玉米良种创新重大专项(CSTC,2007AB1033,2007AA1019,2009BA1006)资助. （30800598）
