泡囊丛枝状菌根资源的调查

Investigation on the Resources of Vesicular-Arbuscular Mycorrhiza

对粮食、甘蔗、豆类等５个科２５种作物，瓜果蔬菜类８个科２０种及果树１３个科２５种的泡囊丛枝状菌根（ＶＡＭ）形成情况进行了调查。发现所调查的大部分植物均有ＶＡＭ，其中如望江南、木菠萝的菌根为首次报道。有些作物受侵染率高，如蚕豆为６３．３％，木薯为５３％，甘蔗为４０％。在所调查的豆类作物中，多为共生三联体。在菌根中，真菌以菌丝、泡囊形式存在于根部皮层细胞的居多，而丛枝状的形式则少见。调查结果为开发利用ＶＡＭ资源提供了基础资料。

The vesicular-arbuscular mycorrhiza (VAM)formation in cereal,leguminous crops and sugar cane belonging 5 families 25 species, and & families 20 species of cucumbitaneous, fruit and vegetable crops,and 13 families 25 species of fruit trees was investigated,and found that most of the plants detected are with VAM, part of which was reported firstly, such as Cassia occidentalis,Artocarpus heterophyllus. The infection rate in some crops were high,e.g.in broad beau,cassava and sugar cane,infection rates were 63. 3%, 53%and 40% respectively. Most of tested leguminous plants are of tripartite symbiotic, that is legume, rhizobia and VAM fungus are simultaneous symbiosis. Most of the fungus in mycorrhizal root w6re occurred in the form of hyphae,vesicle in the cortex cell of the root,whereas, the arbuscular form was less. The investigated results provide a basal information for the exploration and utilization of VAM resources.