生物多样性 ›› 2001, Vol. 09 ›› Issue (2): 122-128.doi: 10.17520/biods.2001019

• 论文 • 上一篇    下一篇

红壤坡地杂草群落VA菌根真菌的宿主物种调查

陈欣, 方治国, 唐建军   

  1. 1 (浙江大学农业生态研究所,  杭州 310029)
    2 (浙江大学植物科学研究所,  杭州 310027)
  • 收稿日期:2000-10-09 修回日期:2001-02-05 出版日期:2001-05-20
  • 通讯作者: 唐建军

Investigation on host plants of vesicular arbuscular mycorrhiza fungi (VAMF) wi thin weed communities in agricultural slope land in the red soil area of southea stern Chi na

CHEN Xin, FANG Zhi-Guo, TANG Jian-Jun   

  1. 1 Institute of Agroecology , Zhejiang University , Hangzhou  310029
    2 Institute of Plant Science , Zhejiang University , Hangzhou  310027
  • Received:2000-10-09 Revised:2001-02-05 Online:2001-05-20
  • Contact: TANG Jian-Jun

本研究调查了红壤坡地幼龄果园杂草群落的物种多样性以及主要物种被VA菌根真菌的侵染率 和侵染强度,分析了VA菌根真菌侵染与根际土壤磷素水平的关系。研究区域幼龄果园杂草群 落共有杂草96 种,分属27科。对17个科的39个物种的调查发现,所调查的物种均不同程 度上被VA真菌所侵染,但科与科之间存在显著差异,同一科的不同种之间也差异明显。相关 分析表明,VA菌根真菌对不同杂草种的侵染率和侵染强度与土壤磷素水平关系不甚密切,VA 菌根真菌侵染强度可能主要决定于宿主植物特性和VA菌根真菌的选择。因此,在不影响农业 生产的前提下,尽可能保持杂草的多样性将有利于VA菌根真菌的生存。

An investigation on weed species biodiversity and host plants of vesicular arbuscular mycorrhiza fungi (VAMF) within weed communities in new developed f ruit gardens was conducted. Phosphorus content in various weed rhizospheric soils was analysed. There were 96 species belonging to 27 families in the weed community ,among which 39 species were tested to identify VAMF colonies. It was found that all the species tested were colonized by VAMF , but the percentage of colonization and the colonizing intensity were very different among the families and species. Correlation analyses showed that no significant correlation exists between phosphorus content in rhizospheric soil and VAMF colonization. VAMF colonization mainly depends on the characteristics of host plants and the selection of VAMF. This suggests that conservation of weed diversity in upland ecosystems will be favorable for conserving VAMF activities and diversity.

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