摘要
以忍冬科的天目琼花、四季锦带、接骨木为试材,研究其枝条在10%、20%、30%、40%浓度PEG-6000胁迫下的抗旱性。结果表明:随胁迫程度的增大,叶片的相对电导率和可溶性糖都出现了先上升后下降再上升的趋势;叶片的可溶性蛋白出现了先下降后上升再下降的趋势;叶片的脯氨酸含量则出现了先上升后下降的趋势。综合评价可知,3种灌木的抗旱性顺序为:天目琼花>四季锦带>接骨木。
This article chosed three species of Caprifoliaceae plants,V.sargentii var.calvescens,Weigela florida（Bunge） A.DC.and S.williamsii,as experimental materials to discuss the effects of different concentrations of PEG-6000 stress,10%,20%,30% and 40% as follows,on the drought resistance of those plants＇ branches.The results showed that the relative conductivity of leaves and the content of soluble sugar rised firstly and fell secondly and rised again at last with the stress concentration rising;the content of soluble protein in leaves fell firstly and rised and at last fell again with the stress concentration rising;what＇s more,the content of proline in leaves appeared fell trend after rised at first.The general estimate told us that the drought resistance ability of the three bushes was V.sargentii var.calvescens Weigela florida（Bunge） A.DC S.williamsii.
出处
《北方园艺》
CAS
北大核心
2011年第6期83-85,共3页
Northern Horticulture
关键词
忍冬科
胁迫程度
抗旱性
Calrifoliaceae
stress level
drought resistance
