农业环境科学学报2011，Vol.30Issue(6)：1037-1043,7.
除草剂对小麦光合特性及叶绿素荧光参数的影响
Effects of Herbicides on Photosynthesis and Chlorophyll Fluorescence Parameters in Wheat Leaves
摘要
Abstract
Effects of five kinds of herbicides( i.e.tribenuron-methyl, fluroxypyr, isoproturon, puma super, chlorotoluron ) on photosynthetic characteristics and chlorophyll fluorescence parameters in 2 winter wheat cultivars( weak-gluten wheat Yangmai 13,strong gluten wheat Yannong 19) were studied under field conditions.The results showed that all of tested herbicides caused the decline of photosynthetic pigment content in leaves of 2 wheat varieties.Photosynthetic rate (Pn), transpiration rate (Tr) and stomatal conductance (Gs) were also declined at different degrees, but chlorophyll a/b value, intercellular CO2 concentration( Ci ) increased gradually.All of these indexes showed a doseresponse relationship to herbicide.Chlorophyll fluorescence analysis showed that herbicide could significantly reduce the primary light energy conversion efficiency(Fy/FM), PS Ⅱ potential activity(Fy/Fo ), PS Ⅱ actual photochemical efficiency(Φ) and photochemical quenching(qP),but increase non-photochemical quenching(qN) as the herbicide dosages raised, indicating that wheat leaves might have photosynthetic protection in some degree under herbicide stress, and there was a certain difference between the 2 wheat varieties in tolerating to herbicides stress.关键词
除草剂/气体交换参数/叶绿素荧光参数/小麦Key words
herbicide/ gas exchange parameters/ chlorophyll fluorescence parameters/ wheat分类
资源环境引用本文复制引用
王正贵,周立云,郭文善,朱新开,李春燕,彭永欣,封超年..除草剂对小麦光合特性及叶绿素荧光参数的影响[J].农业环境科学学报,2011,30(6):1037-1043,7.基金项目
江苏省"六大人才高峰"项目(07-G-008) （07-G-008）
国家自然科学基金项目(30671224,30971729) （30671224,30971729）
江苏省农业支撑计划项目(BE2008366-1,BE2009426) （BE2008366-1,BE2009426）
江苏省高校自然科学重大基础研究项目(07KJAZ1022) （07KJAZ1022）
