CAJ | 학술논문

采用培养皿滤纸法比较了南美蟛蜞菊（ Wedelia trilobata （ L．） Hitchc．）和蟛蜞菊（ W．chinensis （ Osbeck．） Merr．）水浸提液对萝卜（Daucus carota L．）和菜心（Brassica parachinensis Bailey）种子萌发和幼苗生长的化感作用．结果表明：随着南美蟛蜞菊和蟛蜞菊水浸提液质量浓度的升高，萝卜和菜心的种子最大发芽率逐渐降低；相同质量浓度下，南美蟛蜞菊水浸提液对植物种子发芽势、发芽率和发芽指数的抑制作用小于蟛蜞菊；南美蟛蜞菊和蟛蜞菊对植物幼苗的生长影响表现为“低促高抑”的趋势，其中蟛蜞菊对受试植物的化感抑制作用较南美蟛蜞菊更强．
채용배양명려지법비교료남미팽기국（ Wedelia trilobata （ L．） Hitchc．）화팽기국（ W．chinensis （ Osbeck．） Merr．）수침제액대라복（Daucus carota L．）화채심（Brassica parachinensis Bailey）충자맹발화유묘생장적화감작용．결과표명：수착남미팽기국화팽기국수침제액질량농도적승고，라복화채심적충자최대발아솔축점강저；상동질량농도하，남미팽기국수침제액대식물충자발아세、발아솔화발아지수적억제작용소우팽기국；남미팽기국화팽기국대식물유묘적생장영향표현위“저촉고억”적추세，기중팽기국대수시식물적화감억제작용교남미팽기국경강．
Allelopathic effects of aqueous extracts of Wedelia trilobata ( L.) Hitchc.and W.chinensis ( Osbeck.) Merr.on seed germination and seedling growth of Daucus carota L.and Brassica parachinensis Bailey were investi-gated using the petri dish bioassays .The results showed: ( 1 ) the maximum germination rate decreased with in-creased concentrations of the aqueous extracts of W.trilobata and W.chinensis, and the time to reach the maximum germination rate was also delayed in varied degrees;(2) the inhibitory effect of aqueous extracts of W.trilobata on seed germination potential , germination rate and germination index of the tested plants was less than that of W. chinensis under the same concentration; ( 3 ) the aqueous extracts of W.trilobata and W.chinensis promoted the seedling growth of the tested plant at low concentrations and inhibited them at high concentrations , and the root e-longation was more sensitive to the inhibitory effects of the donor materials;(4) comprehensive experiments showed that the inhibitory effect of W.chinensis on the tested plants was stronger than that of W.trilobata.