辐射松、油松幼苗抗旱性能比较  

Comparison of the Drought Tolerance of Seedlings of Pinus tabulaeformis and Pinus radiata

作　　者：刘正刚[1] 罗承德[1] 郭黎[1] 吴宗兴[2] 黄泉[3] 代英[3] 林宏贵 

机构地区：[1]四川农业大学林学园艺学院,四川雅安625014 [2]四川省林业科学研究院,四川成都610081 [3]四川省阿坝藏族羌族自治州林业科学研究所,四川汶川623000

出　　处：《四川林业科技》2007年第6期52-54,共3页Journal of Sichuan Forestry Science and Technology

基　　金：国家林业局中试项目--岷江上游干旱河谷辐射松引种造林推广示范(项目编号:2006065);四川省教育厅"十五"科技攻关项目部分研究内容(项目编号:2002A011)

摘　　要：采用盆栽控水法和单因素试验设计,对两种针叶树种辐射松(Pinus radiata D.Don)、油松(Pinus tabulaeform is Carr.)幼苗在连续干旱胁迫下分别测定其植株的叶片相对含水量、质膜相对透性、脯氨酸含量和脱落酸含量等4项抗旱生理指标,以评定两种树种的抗旱性能。研究结果表明,在连续干旱胁迫下,两树种叶片相对含水量均呈下降趋势,但辐射松的降幅较大,两树种的质膜相对透性、脯氨酸含量和脱落酸含量均有所增加,但辐射松的增幅较小,因此,辐射松的抗旱性能次于油松。Through culturing Pinus tabulaeformis Carr. and Pinus racliata D. Don by pot control water method, the determination were made on their four physiological indexes including the relative water content of leaves, the relative penetration of membrane,Pro and ABA,aiming to compare their drought tolerane. The results have shown that under the stress of continuous drought,the relative water content of their leaves displays a descending trend, but that of Pinus radiata D. Don leaves is bigger on variable. The relative penetration of membrane, Pro content and ABA content of these two species all slightly increase, but the increase range of Pinus racliata D. Don is smaller on variable. So the drought tolerance of Pinus tabulaeformis Carr. is superior to that of Pinus radiata D. Don.

关 键 词：辐射松 油松 幼苗 抗旱性 

分 类 号：S791[农业科学—林木遗传育种]