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《Acta Prataculturae Sinica》 2010-04
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Allelopathic effects of Neotyphodium endophytes of Elymus dahuricus on seeds and seedlings of three turf grass species

YANG Song,LI Chun-jie,CHAI Qing,HUANG Xi,NAN Zhi-biao (Key Laboratory of Grassland Argo-Ecosystem,Ministry of Agriculture;College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China)  
Allelopathic effects of Neotyphodium infected Elymus dahuricus were tested on seeds and seedlings of Lolium perenne,Festuca arundinacea,and Poa pratensis found to affect all three grasses.The seed germination experiment showed that extracts from E.dahuricus inhibited seed germination and seedling growth of all three grasses under germination conditions.The Neotyphodium endophyte considerably enhanced the inhibition of E.dahuricus on seed weights of L.perenne,seed germination of P.pratensis and seed germination,root length,seedling length,and seed weight of F.arundinacea (P0.05).However,the endophyte considerably reduced inhibition of E.dahuricus on root length and seedling length of L.perenne,seedling length of P.pratensis,and seed weight of F.arundinacea (P0.05).In a pot experiment,extracts from E.dahuricus accelerated plant growth of all 3 grasses,thus while the Neotyphodium endophyte reduced seed germination of L.perenne,and seed length of P.pratensis (P0.05),it enhanced the seed germination of F.arundinacea (P0.05).
【Fund】: 国家973项目(2007CB108902);; 国家科技支撑项目(2008BADB3B05);; 教育部新世纪优秀人才计划(NCET-08-0256);; 国家自然基金项目(30771531);; 兰州市科技攻关计划(2008-SY-12);; 兰州市南北两山指挥部项目(LNLK2009-05 2009KJLQ-03)资助
【CateGory Index】: S688.4
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