云南干热河谷地区台湾相思树根瘤菌的抗逆性  

Stress Resistance of Rhizobia Isolated from Acacia confusain Hot-dry Valley of Yunnan

作　　者：王芳[1] 沙桦欣[2] 马焕成[1] 高瑾[2] 张东华[2] 伍建榕[1,2] 

机构地区：[1]国家林业局西南地区生物多样性保育重点实验室,云南昆明650224 [2]西南林业大学林学院,云南省高校森林灾害预警控制重点实验室,云南昆明650224

出　　处：《贵州农业科学》2014年第3期88-93,共6页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"干热河谷猪屎豆根瘤菌多样性及共生抗旱机理研究"(31360003);"干热河谷区木棉-丛枝菌根真菌共生系统的水分关系研究"(31260175)

摘　　要：为探明云南干热河谷台湾相思树根瘤菌的抗逆性,筛选优良的根瘤菌菌株,对分离自云南干热河谷台湾相思的32株根瘤菌进行了耐盐、耐高温和耐干旱的抗逆性试验。结果表明:在供试的32株根瘤菌中,对干旱适应性较强的菌株占21.9%,多数菌株对高温具有较强的耐受性,31.25%的菌株可以在45℃的高温下生长,表现出极强的抗热性;有78.13%的菌株可在0.5%的盐浓度下生长,具有一定的耐盐性,其中有31.25%的菌株耐盐浓度可达2%、3%甚至5%。SWF-01、SWF-02、SWF-06和SWF-19为抗干旱、抗高温和抗盐性能均较强的优良菌株。In order to explore the stress resistance of rhizobia isolated from A.confusa in hot-dry valley of Yunnan,screen the fine rhizobia strains,32 rhizobia strains isolated from A.confuse grown in hot-dry valley of Yunnan were tested on their tolerance to NaCl,temperature and drought variation.The results indicated that the strains that strongly adapted to drought accounted for 21.9%.Most of the strains were of strong tolerance to high temperature,31.25% strains could grow at high temperature of 45℃.78.13% strains could grow in 1% concentration of NaCl,and 31.25% strains tolerated NaCl stress in 2%,3% and 5% concentration.Four strains of SWF-01,SWF-02,SWF-06 and SWF-19 showed high tolerance to drought,salt and high temperature.

关 键 词：干热河谷 台湾相思 根瘤菌 抗逆性 云南 

分 类 号：S58[农业科学—作物学]