燕麦种子浸提液对3种草坪草种子萌发的化感作用  

Allelopathy of aqueous extract from Avena sativa on germination of 3 turf plants

作　　者：康青涛 姬天龙 林栋[1] 马晖玲[1] 张德罡[1] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [2]宁夏回族自治区盐池县草原实验站,宁夏盐池751506

出　　处：《草原与草坪》2014年第5期11-15,20,共6页Grassland and Turf

基　　金：甘肃省自然科学基金项目(1308RJYA083);甘肃省高等学校研究生导师科研项目(1202-05)资助

摘　　要：以燕麦品种陇燕二号种子为供体,用80%乙醇,丙酮和自来水3种溶剂浸提燕麦种子化感物质,通过生物测定法分析不同浓度的浸提液对高羊茅、多年生黑麦草、白三叶3种草种萌发的化感作用。结果表明:燕麦化感物质易溶于80%乙醇,3种草种对浸提液的化感作用敏感性顺序依次为高羊茅>多年生黑麦草>白三叶。80%乙醇浸提液对多年生黑麦草化感作用表现为低浓度促进,高浓度抑制的作用。当浓度为1.250g/L时,多年生黑麦草发芽率(GR)最大,为94.17%。Avena sativa was used to extract the allelochemicals with 80% ethanol,acetone and water respectively and test the impacts of extracted allelochemicals on the seed germination of Festuca arundinacea,Lolium perenne and Trifolium repens.Results showed that the allelochemicals could be easily extracted with 80% ethanol.The order of sensitivity of 3 turf plants to the allelochemicals was Festuca arundinacea〉Lolium perenne〉Trifolium repens.The seed germination rate of Lolium perenne could be improved by 80% ethanol extracted allelochemicals at low concentration but inhibited at high concentration.And the seed germination rate reached the highest value（94.17%） while the allelochemicals concentration was 1.250g/L.

关 键 词：化感作用 燕麦 种子萌发 

分 类 号：S688.4[农业科学—观赏园艺]