Cultural and Morphological Variability in Rhizoctonia solani Isolates Causing Sheath Blight of Rice

摘要

Rhizoctonia solani is a persistent problem to rice cultivation. Morphological variability was studied in 25 isolates from different rice growing areas. Colony size, colony growth, colour and sclerotia formation (central, peripheral or scattered), location (aerial or surface) and texture (smooth or rough) varied in these isolates.