入侵植物马缨丹对4种农作物的化感作用  

Allelopathy of Invasive Plant Lantana camara on four Receiver Plants

作　　者：卢向荣[1] 谭忠奇[2] 林益明[1] 柴纬明[1] 周海超[1] 

机构地区：[1]厦门大学生命科学学院,福建厦门361102 [2]厦门市绿化管理中心,福建厦门361004

出　　处：《厦门大学学报（自然科学版）》2013年第1期133-138,共6页Journal of Xiamen University：Natural Science

基　　金：厦门市科技计划项目(3502z20092015)

摘　　要：马缨丹(Lantana camara)是马鞭草科中一种入侵性极强的外来植物,为了明确马缨丹对入侵地农作物的化感作用,研究了不同浓度马缨丹叶片及根系水浸液对绿豆(Vigna radiata)、油菜(Brassica campestris)、小麦(Triticum aestivum)和水稻(Oryza sativa)种子萌发和幼苗生长的影响.结果表明,马缨丹不同部位及不同浓度水浸液对4种农作物化感效应不同,马缨丹水浸液对4种农作物的种子萌发及幼苗生长具有低质量浓度(2mg/mL)轻微促进、中高质量浓度(20,50,100和200mg/mL)较强烈的抑制作用,且随着水浸液浓度的升高其抑制效应不断增强.不同作物对马缨丹化感作用的敏感程度不同,其中油菜对马缨丹的化感作用反应最为敏感,水稻最不敏感.本研究为提高农作物在受马缨丹入侵田地的生长竞争力提供实验依据.Lantana ca＊nara , Verbenaeeae family,is one of the invasive alien plants. Previous study about the allelopathy of L. cama- ra mainly focused on exudates from stem and leaf, however, few study analysed the allelopathy of root exudates. At present, with the increasing of L. camara invasion expands scales,the plant has been expanded into farmland gradually. The aims of this study is to determine the allelopathy of different concentrations of water extracts from L. camara leaf and root on the germination and seedling growth of Vigna radiata ,]3rasslca campestris, Triticum aestivum and Oryza sativa. Different parts and concentrations of water ex- tracts from L. camara had different allelopathic effects on four receiver plants. Except the lowest concentration （2 mg/mL） had slight facilitation effects, other higher concentrations （20,50,100,200 mg/mL） showed significant inhibition effects and the inhibition increased with concentrations. The sensitivity of water extracts from L. camara was different among four tested species,B, campestris was sensitive to allelopathy of L. camara,while O. sativa was not. This study gave theoretical support for improving the competitiveness of crops aroud L. camara,and also provide a scientific foundation for control of current invasions and prevention of future invasions.

关 键 词：马缨丹 化感作用 种子萌发 幼苗生长 

分 类 号：Q945[生物学—植物学]