摘要
作为重要的生态经济型植物,罗布麻在用于生态建设的同时,也能够取得一定的经济效益。开展干旱胁迫下红麻(Apocynum venetum L.)和大麻状罗布麻(A.cannabinum L.)渗透调节物质及保护酶活性的研究,旨在比较二者的抗旱能力。以红麻和大麻状罗布麻2年生盆栽苗为材料,采用盆栽控水法,研究了4种土壤水分条件下两种罗布麻叶片的渗透调节物质及酶活性的变化情况。结果表明:(1)随着干旱胁迫的加重,两种罗布麻均能够通过提高自身的可溶性糖、可溶性蛋白质、SOD及POD的含量来抵御一定的干旱胁迫。(2)在重度胁迫(T3)条件下,大麻状罗布麻叶片中积累的可溶性糖、可溶性蛋白质、SOD及POD含量均高于红麻的,其中可溶性蛋白质的含量比红麻的高32.3%,SOD的含量是红麻的2倍,且其差异均达到了极显著(P<0.01),这表明大麻状罗布麻较红麻具有较强的抵御干旱胁迫的能力,在宁夏地区栽培具有可行性。
As an important ecological and economic plants,Apocynum can not only be used for ecological construction,but also obtain certain economic benefits.This research aimed to compare the drought resistance ability of A.venetum L.and A.cannabinum L.through the study on the physiology and biochemistry characteristics under drought stress.Using 2-year-old seedling as materials,we used weighing method to set up four levels of soil moisture.The changes of osmotic adjustment substances and protective enzyme activity of the two Apocynum were studied.The results showed：（1） With drought stress increasing,the two Apocynum species could raise their own soluble sugar,soluble protein,SOD and POD content to resist certain drought stress.（2） Under serve drought stress（T3）,the soluble sugar,soluble protein,SOD and POD content of A.cannabinum were higher than that of A.venetum.The soluble protein of A.cannabinum was higher than that of A.venetum with an amount of 32.3%,and the content of SOD was 2 times higher than that of A.venetum.Besides,the difference between the two Apocynum of the soluble sugar and SOD content reached the very significant（P0.01）.All these reflected that A.cannabinum L.was with strong drought resistance.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2012年第12期177-181,共5页
Journal of Arid Land Resources and Environment
基金
教育部留学回国人员科研启动基金
国家科技支撑课题-荒漠草原农牧复合生态系统保育与可持续利用技术集成试验与示范(2011BAC07B03)资助
关键词
罗布麻
干旱胁迫
渗透调节物质
保护酶活性
Apocynum spp.
drought stress
osmotic adjustment substances
activity of protective enzymes
