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

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.