摘要
以我国南方种植较普遍的多花黑麦草‘美克斯’和‘海克里斯’为供体试验材料,以杂草猪殃殃为受体材料,探讨多花黑麦草根系浸提液的化感潜力及分析主要化感物质成分(GC-MS鉴定)。结果表明,2个多花黑麦草根系浸提液对猪殃殃具有化感抑制作用,对种子发芽率大小的影响与质量分数呈负相关,随着质量分数的增加,抑制作用加强;美克斯对猪殃殃种子发芽率的抑制作用要强于海克里斯,美克斯对受体种子发芽抑制率为-0.55,海克里斯的为-0.51;2个多花黑麦草根系浸提液对猪殃殃幼苗生长也存在明显的抑制作用,表现为随着质量分数的增加抑制作用加强,在10.0%时的综合抑制率最高,其次为7.5%,再次为5.0%;相同质量分数下不同品种间以美克斯的抑制作用要强于海克里斯;美克斯根系浸提液中的化感物质包括12类,与抑制作用相关的酚酸类物质占主要成分,包括苯酚类和酸类物质。海克里斯根系分泌的化感物质中,脂肪族化合物占主要成分,包括草酸、甲醇、乙醇和丁醇类。
Allopathic plants release material into the soil that inhibit growth of neighbouring plants, and could affect seedling germination and growth of weeds. Many legume forages have been identified as allelopathic and inhibit the growth of accompanying plants. Lolium m ultiflorurn has been planted widely in southern China. To study the effects on weeds, two varieties, ‘Maximus＇ and ‘Hercules＇ of L. muZtiflorum were used as donor materials. Galium aparine which was widely sown in the south of China was used as receptor material. In re search on allelopathy that made full use of L. multiflorum＇s allelopathy for control of weed growth, G. apa fine had a very large significanc tion showed a positive relation e. Inh with of root extracts of L. rnultiflorum on G. aparine seeding germina increasing concentration, strengthening the inhibition. seed germination of ‘Maximus＇ （-0.55） was stronger than that of‘Hercules＇ （-0.51） The inhibition of Inhibition of root extracts of L. multiflorum on G. aparine seedling growth had a positive relation, with an increase of eoneen tration, strengthening （5.0%〈7.5%〈10.0%）. The inhibition of ‘Maximus＇ was stronger than that of ‘Hercules’ at the same concentration. The root extracts of ＇Maxiumus＇ allelochemicals included 12 types of materials of which the main ones were acids and phenol. cals included oxalic acid, methanol ethanol and butanol while the aliphatie eompound The root extracts of ＇Hercules＇ allelochemi main component related to inhibition was an
出处
《草业学报》
CSCD
北大核心
2013年第4期61-68,共8页
Acta Prataculturae Sinica
基金
福建省科技计划重大专项(2012NZ0002-1-2)
福建省农业科学院青年人才创新基金(2010QA-5)资助
关键词
多花黑麦草
化感作用
猪殃殃
化感物质
Lolium multiClorum allelopathy
Galium aparine
allelochemicals
作者简介
董晓宁（1956-），男，山东荣成人，研究员。Email：gaochengfang602@163．com
通讯作者。E—mail：boqiweng@yahoo．com
