辣子草水浸液对白菜种子萌发和幼苗生长的影响

Effect of Galinsoga parviflora Cav.Aqueous Extracts on Seed Germination and Seedling Growth of Cabbage

[目的]研究辣子草对蔬菜的化感作用。[方法]以白菜为对象,研究不同浓度、不同部位的辣子草水浸液对其种子发芽率及幼苗根长和苗长的影响。[结果]随着浓度的增加,辣子草的水浸液对白菜不同部位生长的抑制作用逐渐增强;而在同一浓度下,不同部位辣子草的水浸液对白菜的影响为叶>茎>根。[结论]辣子草对白菜具有化感作用,且该化感物质可能主要存在于辣子草的地上部分。

[Objective] The aim was to study the allelopathy of Galinsoga parviflora Car. on vegetables. [Method] With cabbage as object, different parts and concentrations aqueous extracts of Galinsoga parviflora Cav. acting on the seed germination percentage and the length of root and seedling were studied. [Result] With the concentration increasing, the inhibitory action of the Galinsoga parviflora Cav. aqueous extract on cabbage was enhancing.And at the same concentration.the effect order of Galinsoga parviflora Cav.aqueous extract on cabbage was leaf,stem,root.[Conclusion]There was allelopathy in Galinsoga parviflora Cav.on cabbage,and the allelochemicals might mainly be in the overground part.