摘要
丛枝菌根真菌(Arbuscular Mycorrhizal Fungi，AMF，简称AM真菌)能为植物生长提供多种矿质养分，调节宿主体内代谢活动，改善植物的营养状况，提高植物抗逆性，促进宿主植物生长发育。为了更好的利用AM真菌这些特点，我们利用湿筛-倾析白砂糖离心法，对崇明东滩海三棱藨草根际AM真菌进行调查，大致了解其根际土壤中AM真菌孢子数量及种类。我们发现样品来源不同，AM真菌孢子大小,数量差异比较显著，在分离的诸多AM真菌孢子中，球囊霉属和无梗囊霉属孢子占较大的比例，可能与孢子结构和取样季节有关。
关键词：海三棱藨草，AM真菌，崇明东滩
Abstract
Arbuscular Mycorrhizal Fungi（AMF）can provide a variety of nutrient，regulate metabolize, improve nourishment, elevate resistance and facilitate development for plant. We screened and isolated AMF spores by “w et screening-decanting and white granulated sugar centrifugation”and investigated diversity of AMF spores in the rhizospere of Scirpus mariqueter in the Eastern Tideland of Chongming Island for applying AMF. We found, there is significant difference in quantity and size of spores between which the AMFs were isolated from. Among those species, the spores belong to Glomus and Acaulospora are the most, maybe related to the spore structure and the season when the spores are isolated.
Keywords：Scirpus mariqueter，AM fungi，the Eastern Tideland of Chongming Island