红壤中VA菌根真菌(球囊霉目)的种类和生态分布

VA MYCORRHIZAL FUNGI (GLOMALES) AND THEIR ECOLOGICAL DISTRIBUTION IN RED SOILS

本文报道了发育于第四纪红色粘土母质上的红壤中的4属13种VA菌根真菌(球囊霉目):1.细齿无梗囊霉 Acaulospora denticulata Sieverding & Toro;2.丽孢无梗囊霉Acaulospora elegans Trappe & Gerdemann:3.光壁无梗囊霉Acaulospora laevis Gerdeman D & Trappe:4.巨大巨孢囊霉Gigaspora gigantea(Nicol.& Gerd.)Gerdemann & Trappe;5.珍珠巨孢囊霉Gigaspora margarita Becket & Hall;6.聚球囊霉Glomus aggregatum Schenck & Smith;7.明球囊霉Glomus clarum Nicolson & Schenck;8.集球囊霉Glomus fasiculatum(Thaxter)Gerdemann & Trappe;9.地球囊霉Glomus geosporum(Nicol.& Gerd.)Walker;10.木薯球囊霉Glomus manihot Howeler,Sieverding & Schenck;11.变形球囊霉Glomus versiforme(Karsten)Berch;12.美丽盾孢囊霉Scutellospora calospora(Nicol.& Gerd.)Walker & Sanders;13.异配盾孢囊霉Scutellospora heterogama(Nicol.& Gerd.)Walker & Sanders。其中细齿无梗囊霉(Acaulospora denticulata)、巨大巨孢囊霉(Gigaspora gigantea)、木薯球囊霉(Glomus manihot)和异配盾孢囊霉(Scutellospora heterogama)4种为国内新记录种。对这13种VA菌根真菌的形态进行了描述讨论,并对这些种群的出现频度。

13 species of 4 genera in the Glomales in red soils derived from Quaternary red clay in central China were reported in this paper. They are Acaulospora denticulata Sieverding & Toro, Acaulospora elegans Trappe & Gerdemann, Acaulospora laevis Gerdemann & Trappe, Gigaspora gigantea (Nicol. & Gerd.) |Gerdemann & Trappe, Gigaspora margarita Becker & Hall, Glomus aggregatum Schenck & Smith, Glomus clarum Nicolson & Schenck, Glomus fasiculatum (Thaxter) Gerdemann & Trappe, Glomus geosporum (Nicol. & Gerd.) Walker, Glomus, manihot Howeler, Sieverding & Schenck, Glomus versiforme (Karsten) Berch, Scutellospora calospora (Nicol. & Gerd.) Walker & Sanders, and Scutellospora heterogama (Nicol. & Gerd.) Walker & Sanders. Among them, Acaulospora denticulata, Gigaspora gigantea, Glomus manihot and Scutellospora heterogama are new records in China. Descriptions of these species are given. The frequency of occurrence of each species, dominant species and seasonal variations of spore number are also discussed.