短蕊景天等4种植物的水分胁迫研究  

Research of water stress on four kinds of plants such as Sedum yvesii,etc.

作　　者：杨柳青[1] 曾红[1] 朱小青[1] 廖飞勇[1] 

机构地区：[1]中南林业科技大学,湖南长沙410004

出　　处：《湖南林业科技》2016年第1期1-5,共5页Hunan Forestry Science & Technology

基　　金：湖南省教育厅重点项目(13A126)

摘　　要：为了探讨短蕊景天、凹叶景天、垂盆草和费菜的耐涝、耐旱性,研究了4种植物在不同水分梯度的胁迫下,其叶片水分饱和亏缺(RWD)、相对含水率(RWC)、质膜相对透性、叶绿素含量、荧光参数等各项生理指标的变化,并利用隶属函数分析法对4种植物进行评定。结果表明:耐涝能力大小顺序为费菜>垂盆草>凹叶景天>短蕊景天;耐旱能力大小顺序为费菜>凹叶景天>垂盆草>短蕊景天。To study the waterlogging and drought tolerance ability of Sedum yvesii, Sedum sarmentosum, Sedum aizoon and Sedum emarginatum, the changes in physiology of leaves water saturation deficit （RWD）, relative water content （RWC）, membrane permeability, chlorophyll content and fluorescence parameters were studied in different moisture gradient of water stress. By making use of subordinate function analysis at the basis of the indexes above, results showed the order of waterlogging tolerance ability of the 4 Sedum plants is Sedum aizoon 〉 Sedum sarmentosum 〉 Sedum emar- ginatum 〉 Sedum yvesii ; the drought tolerance ability is Sedum aizoon 〉 Sedum emarginatum 〉 Sedum sarmentosum 〉 Se- dum yvesii.

关 键 词：短蕊景天 凹叶景天 垂盆草 费菜 水分胁迫 

分 类 号：S688[农业科学—观赏园艺]