带内生真菌的野大麦草粉对3种草坪草种子萌发及生长的影响  

Effects of extracts from Hordeum brevisubulatum infected by endophytic fungi on the germination and growth of three turf grasses

作　　者：脱浩东[1] 杨松[1] 张兴旭[1] 李春杰[1] 南志标[1] 

机构地区：[1]草地农业系统国家重点实验室兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业科学》2011年第12期2107-2111,共5页Pratacultural Science

基　　金：国家973计划课题(2007CB108902);国家自然科学基金项目(30771531);教育部新世纪人才项目(NCET-08-0256);兰州大学中央高校基本科研业务费项目(lzujbky-2012-k01)

摘　　要：以多年生黑麦草(Lolium perenne)、高羊茅(Festuca arundinacea)和草地早熟禾(Poa pratensis)为研究对象,用种子萌发法和盆栽法测定了野大麦(Hordeum brevisubulatum)内生真菌(Neotyphodium)对这3种草坪草种子萌发及生长的影响。结果表明,在种子萌发试验中,野大麦草粉对3种草坪草的生长均有一定的抑制作用,而且内生真菌显著增强了野大麦草粉对多年生黑麦草苗长、须根数和对草地早熟禾苗长的抑制作用(P<0.05);显著降低了野大麦草粉对多年生黑麦草和高羊茅的发芽率及高羊茅苗长的抑制作用(P<0.05)。在盆栽试验中,野大麦草粉对3种草坪草的生长均有一定的促进作用,而且内生真菌显著增强了野大麦草粉对高羊茅和草地早熟禾的苗长和发芽率的促进作用(P<0.05)。An experiment was conducted to test the Effects of Neotyphodium of Hordeum brevisubulatum on seeds and seedlings of Lolium perenne,Festuca arundinacea and Poa pratensis.The results from seed experiment showed that the extracts from H.brevisubulatum showed the inhibition on seed germination and seedling growth of all 3 grasses under filter paper germination conditions.The Neotyphodium endophyte significantly enhanced the inhibition of H.brevisubulatum on numbers of fibrous roots and seedling length of L.perenne,seedling length of P.pratensis（P0.05）,respectively.However,it could remarkably reduced inhibition of H.brevisubulatum on seed germination of ryegass,seed germination and seedling length of tall fescue（P0.05）.The results from pot experiment showed that the extracts from H.brevisubulatum accelerated plant growth of all 3 grasses.The Neotyphodium endophyte remarkably improved seeds germinations and seed length of tall fescue and P.pratensis（P0.05）.This study showed that the endophytic fungi from H.brevisubulatum had an important effects on L.perenne,F.arundinacea and P.pratensis.

关 键 词：内生真菌 野大麦 草坪草 发芽 

分 类 号：S688.4[农业科学—观赏园艺] Q945.34[农业科学—园艺学]