菊苣根水浸提液对3种牧草种子活力的影响

[目的]探讨菊苣根水浸提液对牧草种子萌发及幼苗生长的影响。[方法]采用不同浓度（0、12.5和50.0 g/L）的菊苣（Cichoriumintybus L.）根水浸提液,处理高羊茅（Festuca arundinacea L.）、白三叶（Trifolium repens L.）和紫花苜蓿（Medicago sativa L.）等3种牧草种子。[结果]菊苣根水浸提液对3种牧草种子的种子发芽率、发芽指数、活力指数、幼苗根长及芽长生长主要表现为抑制作用,且随水浸提液浓度增加而抑制效应增强;同浓度下,高羊茅种子萌发受到的抑制效应最强。不同植物幼根和幼茎对水浸提液的敏感性不同;高羊茅的幼芽和幼根对菊苣根水浸提液极为敏感,在50.0 g/L浓度下,高羊茅的幼芽和幼根抑制率为39.96%和38.83%。[结论]对开发植物源除草剂对杂草的防治和菊苣综合治理的研究具有一定的参考价值。

Effect of the Aqueous Extracted from Chicory Root on the Seed Vigor of Three Herbs

[Objective] The effect of the aqueous extracted from Cichorium intybus L.root on seed germination and seedling growth was investigated.[Method] The different concentrations(0,12.5 and 50.0 g/L) of aqueous extract were adopted to process the seeds of Festuca arundinacea L.,Trifolium repens L.and Medicago sativa L.[Results] The results showed that the aqueous extract of chicory root had certain influence on herb seed germination and seedling growth,namely,the inhibition of germination index,vigor index,seedling root and bud growth was strengthened with an increment of aqueous extract concentration and under the condition of same extract concentration,the seed germination of festuca would suffer the strongest inhibition effect.The different plant seedling root and stem had different sensitivity to aqueous extract and seedling root and stem of festuca were extraordinary sensitive to aqueous extract,which inhibition rate reached 39.96% and 38.83% in 50.0g/L of the extract concentration.[Conclusion] The reference value for the development of plant type herbicide in comprehensive weed-controlling was provided.