Development of the teleomorph of non-self-anastomosing isolates of Rhizoctonia solani by a buried-slide method

A buried-slide method of inducing teleomorph development was compared with a soil method for isolates of Rhizoctonia solani in anastomosis group 2. The teleomorph ( Thanatephorus cucumeris ) developed frequently in the buried-slide method. For non-self-anastomosing isolates, which cannot grow through soil, the teleomorph was observed only in the buried-slide method. One of the five soils tested was particularly favourable. The buried-slide method allows easy examination of the teleomorph with minimum disturbance to the hymenium. It has demonstrated the identity of non-self-anastomosing isolates with T. cucumeris.