摘要： 用田菁根瘤菌突变体处理水稻和稗草，用田菁根瘤菌和磁场处理白兰爪，显微观察发现这三种非豆科植物根毛发生规律性变化，包括根毛的弯曲、膨大、分校及侵入线的形成。同时，水稻与白兰瓜均结根瘤。这些结果与豆科植物的情况具有相似性，是反映非豆科植物与根瘤菌之间建立互作关系的重要标志。

关键词: 田菁, 根瘤菌, 突变体, 水稻, 稗草, 白兰瓜, 根毛, 根瘤

Abstract: Rice and branyardgrass were treated by rhizobium mutant of sesbania, Cucumis melo var inodorous was treated by rhizobium and magnetic field.Microscope observations showed that regular deformation occured on the root hairs of these three non-leguminous plants, the root hairs curled, expanded and branched, and infection threads were formed.At the same time the nodules were discovered on roots of rice and Cucumis melo var inodorous.All of the plants were similar to the leguminous plant roots.It is a important sign for establishment of symbiotic association between rhizobia and non-leguminous plants.

Key words: Rhizobium sesbania, Mutant, Rice, Branyardgrass, Cucumis melo var inodorous, Root hairs, Root nodules