棉花根系分泌物对枯萎病菌孢子萌发及菌丝生长的影响  

Effect of cotton root exudates on spore germination and mycelium growth of Fusarium oxysporum

作　　者：石明旺[1] 杜开书[1] 邓天福[1] 

机构地区：[1]河南科技学院,河南新乡453003

出　　处：《河南科技学院学报（自然科学版）》2011年第6期35-38,共4页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省科技基础与前沿项目(102300410126)

摘　　要：以3种不同的棉枯萎病抗性棉花品种为材料,研究陆地棉根系分泌物对棉枯萎病菌生长发育的影响.结果表明:百棉一号品种对棉枯萎病菌的孢子萌发及菌丝生长有一定的抑制作用,而HN68和无毒棉的根系分泌物对枯萎病菌的孢子萌发及菌丝生长作用不显著.由此可以说明,百棉一号对棉花枯萎病菌的生长发育有较强抗性,而HN68和无毒棉相对抗性不显著,同时也说明棉花根系分泌物对棉花枯萎病菌的生长发育有一定影响作用,这对研究棉花抗枯萎病机制有很大的意义.The effect of root exudates from 3 kinds of cotton varieties of anti-cotton wilt disease on spore germination and mycelium growth of Fusarium oxysporum was studied.The results showed that root exudates of Baimian 1 could inhibit spore germination and mycelium growth of F.oxysporum,root exudates of HN68 and non-toxic cotton had no significant inhibition on F.oxysporum.The results also proved that Baimian 1 had a strong resistance to F.oxysporum,and the resistance of HN68 and non-toxic cotton to F.oxysporum was not significant.The study about effect of cotton root exudates on spore germination and mycelium growth of F.oxysporum is important to reveal the mechanism of cotton to Fusarium wilt.

关 键 词：棉花 根系分泌物 枯萎病菌 孢子萌发率 抑菌作用 

分 类 号：S56[农业科学—作物学]