摘要
试验以马缨丹为供体植物,分别以甜白菜和油菜种子为受体,采用培养皿滤纸法进行化感试验,测定马缨丹的茎叶水提液对甜白菜和油菜幼苗的根长、苗高和鲜重的影响。结果表明:马缨丹地上部分的水提液对甜白菜和油菜幼苗生长有明显的化感作用,且不同浓度水提液对不同幼苗的影响存在差异;对根的生长都有明显的抑制作用,且随着浓度的增大抑制作用明显增强;马缨丹水提液对受体植物苗高呈现出"低促高抑"的趋势。
With lantana camara linn as allelochemicals donor plants,sweet cabbage and brassica chinensis L.seeds as the receptors,respectively,the filter paper method of petri dishes was used to examine how water extract of plant aerial parts affect the root length,seedling height,and fresh weight of sweet cabbage and brassica chinensis L..The result shows that water extract of aerial parts of lantana camara linn has obvious allelopathic effect on seedling growth of sweet cabbage and brassica chinensis L.,and different concentrations of aqueous extracts have different effects.The inhibition of aqueous extracts to root growth was observed,which become stronger with the concentration of aqueous extracts going up.respectively.As for seedling height,the effect of aqueous extracts of lantana camara linn tend to be beneficial under lower concentration and inhibitory under higher concentration.The results indicate that aqueous extracts of lantana camara linn have allelopathic potentials and its important mechanism deserves further research.
出处
《顺德职业技术学院学报》
2011年第3期19-21,共3页
Journal of Shunde Polytechnic
基金
广东省教育科学"十一五"规划课题(2010TJK335)
揭阳职业技术学院科研课题(JYCKY0708)
关键词
马缨丹
化感作用
水提液
甜白菜
油菜
lantana camara linn
allelopathy
aqueous extract
sweet cabbage
brassica chinensis L.
