中国蔬菜Issue(22)：35-40,6.
外源水杨酸对NaCl胁迫下番茄幼苗光合特性的影响
Effects of Salicylic Acid on Photosynthesis Characteristics of Tomato Seedlings during NaCl Stress
摘要
Abstract
Effects of exogenous salicylic acid ( SA ) on photosynthesis and chlorophyll fluorescence in tomato ( Lycopersicon esculentum Mill. ) leaves under NaCl stress were studied. The results showed that under NaCl stress with SA treatment the levels of net photosynthetic rate ( Pn ) and stomatal conductance ( Gs ) increased more obviously than the control without SA, and the increasing or decreasing rate of intercellular CO2 ( Ci ) concentration and stomatal limitation value ( Ls ) were faster than that of the control without SA too. The SA treatment inhibits the decreases of chlorophyll contents, intrinsic photochemical efficiency of PS Ⅱ ( Fv/Fm ), potential activity of PS Ⅱ (Fv/Fo), quantum yield of PS Ⅱ (ΦPSⅡ), chlorophyll photochemical quenching ( qP ); and the increases in original fluorescence ( Fo ) and chlorophyll non-photochemical quenching ( NPQ ). These results suggest that SA has protective role against the damage of photosynthetic system under NaCl stress.关键词
番茄/水杨酸/NaCl胁迫/光合作用/叶绿素荧光参数Key words
Tomato/ Salicylic acid/ NaCl stress/ Photosynthesis/ Chlorophyll fluorescence分类
农业科技引用本文复制引用
杨凤军,李天来,宿越,臧忠婧..外源水杨酸对NaCl胁迫下番茄幼苗光合特性的影响[J].中国蔬菜,2012,(22):35-40,6.基金项目
国家"十一五"科技支撑计划项目(2006BAD07B04),辽宁省"十一五"重大项目(2006215001) （2006BAD07B04）
