入侵植物野胡萝卜浸提液对4种草坪草的化感效应  

Allelopathic effects of the extracts of the invasive plant Daucus carota L.on four turf grasses

作　　者：廖博通 陈琳 刘志华[1] 刘阳华[1] 文明英[1] 向国红[2] LIAO Botong;CHEN Lin;LIU Zhihua;LIU Yanghua;WEN Mingying;XIANG Guohong(Hengyang Academy of Vegetable Research,Hengyang,Hunan 421000,China;Hunan University of Humanities,Science and Technology,Loudi,Hunan 417000,China)

机构地区：[1]衡阳市蔬菜研究所,湖南衡阳421000 [2]湖南人文科技学院,湖南娄底417000

出　　处：《生物安全学报》2023年第3期218-225,共8页Journal of biosafety

基　　金：湖南省高新技术产业科技创新引领计划项目(2020NK2001);湖南省自然科学基金省市联合项目(2022JJ50017);衡阳市科技计划项目(202150063722)。

摘　　要：【目的】明确入侵植物野胡萝卜水浸提液对4种草坪草的化感效应。【方法】采用培养皿滤纸法,观察记录不同浓度(0、10、20、30、40 g·L^(-1))的野胡萝卜根、茎、叶水浸提液对4种草坪草种子萌发的影响,根据化感综合效应指数分析野胡萝卜水浸提液的化感作用。【结果】野胡萝卜不同部位浸提液对受体种子的发芽率、发芽势、发芽指数、活力指数、根长和芽长均有一定的影响。化感综合效应指数表明,随着野胡萝卜浸提液浓度的增加,对白三叶、黑麦草、翦股颖的化感抑制作用均增强,对高羊茅的化感作用表现为“低促高抑”的双重效应。4种草坪草的耐受强弱顺序为:高羊茅>黑麦草>翦股颖>白三叶;野胡萝卜叶浸提液对4种草坪草的化感作用强于根和茎。【结论】入侵植物野胡萝卜浸提液对4种草坪草的化感效应较为显著,在入侵严重地区,可选用耐受力强的草坪草建坪。【Aim】This study aimed to test the allelopathic effect of the water extract of the invasive plant Daucus carota L.on four plant species.【Method】The effects of water extracts from roots,stems,and leaves of D.carota L.at different concentrations(0,10,20,30,and 40 g·L^(-1))on the seed germination of four species were observed and recorded by using the method of filter paper in the culture dish.The allelopathic effects of the water extracts of D.carota L.were analyzed according to the allelopathic comprehensive effect index.【Result】The extracts from different parts of D.carota L.had certain effects on the germination rate,germination potential,germination index,vigor index,root length,and shoot length of the recipient seeds.Moreover,synthetic effects of allelopathic index showed that with the increase of the concentration of the water extract from the roots,stems,and leaves of D.carota L.,the allelopathy inhibition to Trrifolium repens L.,Lolium perenne L.,and Agrostis matsumurae L.increased.The allelopathic effect to Festuca arundinacea L.was a double effect of"low promotion and high inhibition".The order of tolerance for the four turf grasses was F.arundinacea L.>L.perenne L.>A.matsumurae L.>T.repens L.,and the allelopathic effect of the leaf extract from D.carota L.on these species was stronger than that of the roots and stems.【Conclusion】The allelopathic effect of the extract of D.carota L.on the 4 plant species is significant.Species with strong tolerance can be used for revegetation in serious invasion areas.

关 键 词：野胡萝卜 化感作用 草坪草 种子萌发 

分 类 号：S688.4[农业科学—观赏园艺]