四种蕨类植物根际土壤中VA菌根真菌孢子种群组成和季相变化

对４ 种移栽到温室中的蕨类植物根际土壤中的ＶＡ 菌根真菌孢子种群组成和季相变化进行了研究， 结果发现， ＶＡ菌根真菌孢子的产生具有明显的宿主依赖性和季相变化。在相同气候条件下， 不同植物根际土壤中的ＶＡ菌根真菌种群组成不同； 同种ＶＡ 菌根真菌在不同宿主植物根际土壤中， 孢子的丰富度有很大的差异。本文对影响ＶＡ菌根真菌孢子种群组成和季相变化的因素进行了讨论。

Population Composition and Seasonal Variation of VA Mycorrhizal Fungi Spores in the Rhizosphere Soil of Four Pteridophytes

The population composition and seasonal variation of VA mycorrhizal fungi spores in the rhizosphere soil of four mycorrhized plants which were transplanted in the greenhouse from the field were studied. It was found that the sporulation of VA mycorrhizal fungi was obviously with host-dependence and seasonal variation. The composition of VA mycorrhizal fungi population differed in the rhizosphere soil of different host plants. The spore abundance of the same species of VA mycorrhizal fungus was significantly different in the rhizosphere soil of different hosts which were grown in the same habitat. The factors that affect spore population composition and seasonal variation of VA mycorrhizal fungi were discussed in this article.