10个彩叶树种抗旱性指标测定分析及其综合评价  

Comprehensive Evaluated of Dought Resistance of Ten Colorful Tree Species

作　　者：冯祥元 种培芳[2] 于柱英 

机构地区：[1]武威市林业综合服务中心,甘肃武威733000 [2]甘肃农业大学林学院,甘肃兰州730070

出　　处：《西北林学院学报》2013年第5期30-35,共6页Journal of Northwest Forestry University

基　　金：国家林业局"甘肃武威林木良种繁育中心项目"引种测定研究内容

摘　　要：以引种于武威的10个彩叶树种为研究对象,通过干旱胁迫处理,对与其抗旱性相关的渗透调节以及酶活性等6项指标进行测定,采用隶属函数法和灰色关联度法对不同彩叶树种的抗旱性进行了系统地评价。结果表明:抗旱性强弱顺序为黄栌>红叶碧桃>金叶锦带>金叶风箱果>红栌>紫叶矮樱>红瑞木>紫叶风箱果>紫叶锦带>紫叶李。6项指标在彩叶树种抗旱性中相互制约,相互依赖,综合调节着彩叶树种的抗旱机制。其关联顺序为:脯氨酸(Pro)>过氧化氢酶(CAT)>超氧化物岐化酶(SOD)>丙二醛(MDA)>过氧化物酶(POD)>叶绿素(a+b)。其中Pro和CAT两者关联度均在0.9以上。A comprehensive evaluation was conducted on 10 introduced colorful tree species in Wuwei, Gan- su. Indices related to drought resistance of the seedlings were measured, and analyzed by membership function and the gray relevancy methods. The drought resistance of ten tree species was in the order of Cotinus coggygria Prunus persica Batsch. var. duplex Rehd Weigela ＇ Red Prince Physo carpus opuli folius var. luteus Cotinus coggygria atropurpureus Prunus cistena wida baopiz Ph ysocarpus opuli f olius Summer Wine Weigela Florida ＇ Foliia purpureis Prunus cerasi f era f. atropurpurea. Mutual restrictions and dependences were observed among 6 indices, which controlled the mechanism of drought resistance. The correlation order was prolineeatalase superoxide dismutase malondiadehydeperoxide enzymechlorophyll（a＋ b）. The levels of gray correlation of Pro and CAT were all over 0.9.

关 键 词：彩叶树种 抗旱指标 灰色关联度 隶属函数值法 综合评价 

分 类 号：S718.43[农业科学—林学]