3个多花黑麦草品种化感作用研究  

Allelopathy of three varieties of Lolium multifolorum

作　　者：高承芳[1] 林仕欣[1] 林碧芬[1] 刘远[1] 张晓佩[1] 李文杨[1] 董晓宁[1] 

机构地区：[1]福建省农业科学院畜牧兽医研究所,福建福州350013

出　　处：《草业科学》2011年第9期1676-1680,共5页Pratacultural Science

基　　金：福建省科技厅公益项目(2010R1025-7);福建省农科院青年创新基金(2010QA-5)

摘　　要：采用生物检测方法,初步探讨了3个不同品种多花黑麦草(Lolium multifolorum)茎、叶水浸提液对紫花苜蓿(Medicago sativa)品种赛迪10的化感作用。结果表明,3个不同品种多花黑麦草化感作用大小不同,品种Ba-rextra叶的水浸提液在3个质量分数处理下对受体紫花苜蓿有促进作用,而Barmega叶的水浸提液在质量分数10.0%和7.5%时却对紫花苜蓿有抑制作用;不同器官茎、叶水浸提液化感作用表现也不同,品种Jumbo和Ba-rextra茎的水浸提液对紫花苜蓿的种子发芽有抑制作用,叶的水浸提液却有促进作用;不同质量分数浸提液化感作用表现不同,3个多花黑麦草品种在质量分数10.0%时对紫花苜蓿种子发芽、根长及苗鲜质量有抑制作用,而在质量分数5.0%时表现出促进作用。The biological detection techniques were used to determine the allelopathy effectiveness of leaf and stem extracts from three varieties of Lolium multifolorurn on Sardi 10 of Alfalfa. The results of this study showed that the allelopathy effectiveness of three varieties of L. multifolorum on alfalfa were different. The extract from Barextra leaf encouraged Sardi 10 seeds to germinate. The 10. 0% and 7.5% concentrations of extract of Barmega leaf inhibited Sardil0 seeds to germinate. This study also found that the allelopathy effectiveness of extracts from stem and leaf was different, indicating that the stem extracts of Jumbo and Barextra inhibited Sardi 10 seeds to germinate while the leaf extracts of Jumbo and Barextra encouraged Sardi 10 seeds to germinate. Different concentrations of extracts showed different allelopathy effectiveness, indicating that the 10. 0% concentration extracts of L. multifolorum showed a positive effectiveness and the 5. 0% concentration extracts of L. multifolorum showed a negative effectiveness on seed germination, root growth and seedling fresh weight of Sardi 10 of Alfalfa.

关 键 词：多花黑麦草 化感作用 紫花苜蓿 

分 类 号：S543.6[农业科学—作物学] Q945.7[生物学—植物学]