低温胁迫对南美天胡荽光合作用和叶绿素荧光的影响  

Effects of low temperature stress on photosynthesis and chlorophyll fluorescence parameters in Hydrocotyle vulgaris

作　　者：杨柳青[1] 张柳[1] 廖飞勇[1] 吴红强 刘志昂 曾红[1] 朱小青[1] 

机构地区：[1]中南林业科技大学风景园林学院,湖南长沙410004 [2]湘潭市林业科学研究所,湖南湘潭411206

出　　处：《经济林研究》2014年第4期99-102,共4页Non-wood Forest Research

基　　金：湖南省教育厅科研重点项目(项目编号:13A126)

摘　　要：为了揭示低温对南美天胡荽Hydrocotyle vulgaris L.叶绿素荧光参数的影响,采用单因素试验设计,将南美天胡荽放入人工气候箱内,对其进行15℃(CK)、10℃、5℃、0℃、-2℃共5个低温梯度处理。结果表明:随着温度的降低,南美天胡荽叶片的净光合速率下降,Fv/Fm、q P、ETR等值下降,下降的规律为温度越低,下降的数值越大。In order to reveal the effects of low temperature on chlorophyll fluorescence parameters in Hydrocotyle vulgaris, adopting the single factor experiment design, H. vulgaris was put in the artificial climate box, and five low temperature gradients of 15 （CK）, 10, 5, 0, and -- 2 ℃ were designed. The results showed that with the decreases of temperature, the values of net photosynthetic rate, Fv/Fm, qP and ETR were decreased. The rule is that lower temperature, the greater decline of values.

关 键 词：南美天胡荽 低温胁迫 叶绿素荧光参数 

分 类 号：S682.32[农业科学—观赏园艺]