孔雀草水浸提液对4种园林植物化感作用的研究  

Research on allelopathy of aqueous extract from Tagetes patula to four garden plants

作　　者：黄玉梅[1] 张杨雪 刘庆林[1] 黄胜岚[1] 刘盼[1] 

机构地区：[1]四川农业大学风景园林学院,四川成都611130

出　　处：《草业学报》2015年第6期150-158,共9页Acta Prataculturae Sinica

基　　金：国家自然科学基金项目(31201649)资助

摘　　要：以4种园林植物石竹、千叶蓍、二月兰、鸡冠花作为受体,采用室内培养皿法,研究了不同浓度孔雀草水浸提液(0,12.5,25.0,50.0,100.0 mg/m L)对4种园林植物种子萌发及幼苗生长的化感作用,旨在为孔雀草在园林植物配置中的应用提供科学依据。结果表明,孔雀草水浸提液对4种园林植物种子萌发及生长有明显影响,且4种园林植物间存在一定差异。孔雀草水浸提液对石竹、二月兰、鸡冠花种子萌发均表现为抑制作用,对千叶蓍种子则表现为一定的促进作用;孔雀草水浸提液对石竹幼苗表现为抑制作用,而对二月兰和鸡冠花幼苗表现为"低促高抑",浓度为100.0 mg/m L时,抑制作用最强;千叶蓍幼苗生长在浸提液浓度为50.0 mg/m L时仍表现为显著的促进作用,仅在100.0 mg/m L时受到一定程度抑制;孔雀草水浸提液对石竹、鸡冠花和二月兰幼苗叶绿素含量基本都表现为抑制作用,千叶蓍仅在100.0 mg/m L时表现为抑制;二月兰、鸡冠花幼苗POD活性在中低浓度时有不同程度升高,100.0 mg/m L时呈下降趋势,石竹幼苗POD活性随浸提液浓度升高持续下降,千叶蓍则先下降后升高;石竹和鸡冠花幼苗MDA含量随浸提液浓度升高而升高,千叶蓍和二月兰则先下降后升高。In order to provide scientific theoretical basis for the application of Tagetes patula in the garden plants configuration,the aqueous extracts from Tagetes patula was used to search the allelopathic effects on seed germination and seedling growth of Dianthus chinensis ,Achillea millefolium ,Orychophragmus viola-ceus ,Celosia cristata using petridishs with filter papers.Results showed that the aqueous extracts from Tagetes patula had significant allelopathic effects on seed germination and seedling growth of four garden plants.The aqueous extracts from Tagetes patula inhibited seed germination of D .chinensis ,O.violaceus and C.cristata,on the contrary,inceased seed germination of A.millefolium in a degree.The extracts also inhibi-ted seedling growth of D .chinensis at all concentrations,but promoted at the lower concentrations and inhibi-ted at the higher ones the seedling growth of O.violaceus and C.cristata.The inhibition was the most inten-sive by treatment with 100.0 mg/mL of the aqueous extracts.Whereas,the growth of A.millefolium was pro-moted significantly at 12.5,25.0,50.0 mg/mL,and inhibited only by treatment with 100.0 mg/mL.The chlorophyll content in these four garden plants were reduced by 23.46%,42.56%,14.75% and 58.28%, when the aqueous extracts concentration was 100.0 mg/mL.The extracts increased the activities of peroxidase(POD)of O.violaceus and C.cristata at the lower concentration,while decreased the activities of POD at 100.0 mg/mL.The activity of POD of D .chinensis declined at all concentrations,while A.millefolium de-clined earlier then ascended later.The content of MDA of D .chinensis and C.cristata ascended at all concen-trations,whereas A.millefolium and O.violaceus declined earlier then ascended later.It implied that T.pat-ula had different allelopathic effects on different garden plants and “concentration effect”was found in this research.

关 键 词：孔雀草 园林植物 水浸提液 化感作用 

分 类 号：S688[农业科学—观赏园艺]