大叶芥菜对牛膝菊的化感作用潜力  

Allelopathy of Brassica juncea var. foliosa L. H.Bailey on Galinsoga parviflora Cav.

作　　者：朱峰 何永福 叶照春 

机构地区：[1]贵州省植物保护研究所,贵州贵阳550006

出　　处：《杂草科学》2015年第1期14-16,共3页Weed Science

基　　金：贵州省农业科学院研究生科研创新基金[编号:黔农科合(创新基金)2012004号];贵州省创新能力建设专项[编号:院所创能(2012)4001]

摘　　要：以牛膝菊为受体,研究大叶芥菜水浸提液对牛膝菊的化感作用。结果显示,浓度分别为0.250 00、0.125 00、0.062 50、0.031 25 g/m L的大叶芥菜水浸提液对牛膝菊种子的萌发抑制效应以0.250 00 g/m L最高,平均抑制率为56.03%;低浓度(0.031 25 g/m L)处理对牛膝菊种子萌发基本上没有抑制作用。此外研究发现,大叶芥菜水浸提液对牛膝菊胚根、胚芽的萌发和鲜质量积累都有明显的抑制作用,对鲜质量平均抑制率分别为75.75%、35.82%、17.48%、18.81%;对牛膝菊种子萌发、胚根、胚芽、鲜质量的化感综合效应分别为60.36%、30.45%、14.23%、16.50%。结果表明,大叶芥菜对牛膝菊有很强的化感潜力,能为牛膝菊的绿色防控提供理论依据。Galinsoga parviflora Cav. was used as a receptor to evaluate the allelopathic effects of water extracts of Brassica juncea var. foliosa L. H. Bailey. Of the concentrations tested （ 31.2,62.5,125 and 250 mg/mL）, the highest one, 250 mg/mL was the most inhibitory （56%） of G. parviflora seed germination whereas the lowest concentration （31.2 mg/mL） did not affect germination. The water extracts of B. juncea var. foliosa inhibited growth of radicle and seedling,the inhibition rates were 76% ,36% , 17% , 19% , respectively; the overall allelopathic effect on the seed germi- nation,growth of radicle and seedling, and fresh weight of G. parviflora were 60% ,30% , 14%, 16%, respectively. In conclusion ,B. juncea vat. foliosa has strong allelopathie effects on G. parviflora, a property that can serve as the basis for the green control of this weed.

关 键 词：大叶芥菜 植物化感作用 牛膝菊 

分 类 号：Q948.122.1[生物学—植物学]