土壤干旱胁迫及复水对紫叶矮樱光合特性的影响  

Effect of soil drought stress and rewatering on photosynthesis characteristics of Prunus×cistenena 'Pissardii'

作　　者：徐国山[1] 邓丽娟[1] 李雪丽[2] 李云飞[1,3] 李彦慧[3] 杨建民[3] 

机构地区：[1]河北省木兰围场国有林场管理局,河北围场068450 [2]河北省保定市植保植检站,河北保定071051 [3]河北农业大学园林与旅游学院,河北保定071000

出　　处：《河北林果研究》2010年第2期116-120,共5页Hebei Journal of Forestry and Orchard Research

基　　金：国家"948"项目(2001-40);河北省农业综合开发办项目"新优彩色园林植物品种及繁育技术推广"

摘　　要：以盆栽3年生紫叶矮樱为试材,采用称重控水法,研究土壤干旱胁迫及复水对紫叶矮樱光合特性的影响。结果表明:干旱条件下,随着胁迫程度的加重,紫叶矮樱的叶水势、净光合速率、蒸腾速率、气孔导度和胞间CO2浓度下降,叶绿素、花青苷含量和水分利用效率先升高再降低;复水后,叶水势、净光合速率、蒸腾速率、叶绿素含量、花青苷含量和水分利用效率升高,表明紫叶矮樱具有胁迫后补偿生长特征。The effect of drought stress and rewatering on photosynthesis characteristics of seeding leaves had been studied using 3-year-old pot-cultured Prunus×cistenena ＇Pissardii＇ seedlings as experimental materials under drought stress.The result showed that leaf water potential,net photosynthesis ratio,the transpiration ratio,Gs and Ci were decrease under drought stress.The content of chlorophyll and anthocyanin and water use efficiency were increased at the primary stage and then decreased at the last stage.After rewatering,leaf water potential,net photosynthesis ratio,transpiration ratio,water use efficiency and the content of chlorophyll and anthocyanin were increased,it is showed that Prunus×cistenena ＇Pissardii＇ had a characteristics of compensative growth.

关 键 词：土壤干旱胁迫 复水 紫叶矮樱 光合特性 

分 类 号：S662[农业科学—果树学]