节点文献

寄生植物菟丝子防治外来种薇甘菊研究初探

A Study on the Control of Exotic Weed Mikania micrantha by Using Parasitic Cuscuta campestris

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 邓雄冯惠玲叶万辉杨期和许凯扬曹洪麟傅强

【Author】 DENG Xiong 1 FENG Hui-ling 1,2 YE Wan-hui 1 YANG Qi-he 1 XU Kai-yang 1 CAO Hong-lin 1 FU Qiang 1 (1.South China Institute of Botany,the Chinese Academy of Sciences,Guangzhou510650,China;2.Shenzhen Xianhu Botanic Garden,Shenzhen518000,China)

【机构】 中国科学院华南植物研究所中国科学院华南植物研究所 广东广州510650广东广州510650深圳市仙湖植物园广东深圳518000广东广州510650广东广州510650

【摘要】 利用寄生植物田野菟丝子(CuscutacampestrisYunker)作为外来杂草薇甘菊(MikaniamicranthaH.B.K.)的生物防治手段,研究了田野菟丝子对薇甘菊的光合作用及生长的影响。结果表明:田野菟丝子寄生于薇甘菊30d左右,薇甘菊单株叶片数、地上茎长度和生物量开始减少,光合速率、蒸腾速率、气孔导度、叶绿素含量以及叶绿素荧光Fv/Fm也开始降低。经过约2个月时间,以上的几个生长指标和生理指标均显著降低。在野外自然状态下,田野菟丝子由最初撒播面积约0.01m2,很快发展到20m2左右的大块面积,离侵染源中心的最大扩散距离达到5m以上。田野菟丝子寄生可以严重影响薇甘菊茎叶生长及开花结实,可望成为根本上解决薇甘菊危害的一种生物控制技术,而且也可以缓解药用菟丝子资源匮乏的问题。结合国内外最新进展,提出有关田野菟丝子与其寄主相互关系中亟待解决的几个问题。

【Abstract】 Parasite Cuscuta campestris Yunker was examined for controlling the growth and spread of harmful weed Mikania micrantha H.B.K.The experiments were carried out to estimate biomass production by sowing the seeds of M.micrantha in sample plots in Shenzhen Xianhu Botanic Garden where this weed grew densely,and for physiological study by cultivation of both plants in pots.The result exhibited that the leaf number,stem length,and biomass dry weight of individual of the host M.micrantha began to decrease after the host was parasitized for about 30days.Such decrease was obvious after2months of parasitism,so did the photosynthetic rate(P n ),transpiration rate(E),stomatal conductance(g s ),water use efficiency(WUE),chlorophyll content,and Fv /Fm.The parasite could spread rapidly extending to an area of20m 2 with longest distance of5m within2months.The parasite hampered the growth and reproduction of the host and depressed it even to die.It is suggested that C.campestris might be a promising plant for controlling this weed.

【关键词】 薇甘菊田野菟丝子寄生植物寄主
【Key words】 Mikania micranthaCuscuta campestrisParasitic plantHost
【基金】 广东省自然科学基金重点项目(021536);深圳城市管理办计划项目;广东省科技百项工程项目(2KB068015);国家重点基础研究发展项目(G2000046803)
  • 【文献出处】 热带亚热带植物学报 ,Journal of Tropical and Subtropical Botany , 编辑部邮箱 ,2003年02期
  • 【分类号】S451
  • 【被引频次】48
  • 【下载频次】720
节点文献中: 

本文链接的文献网络图示:

本文的引文网络