Molecular and Morphological Identification of Species Causing Sheath Rot of Rice in Thailand and Their Division into Physiological Races.

Sheath rot and dirty panicle are some of the major diseases of rice in Thailand. The diseases are traditionally considered to be caused by the pathogen and damage and lower both the quantity and quality of rice grain. In this study, 32 fungal isolates collected from the central and northeastern regions of Thailand were analysed phylogenetically using three molecular markers (ITS, D1/D2 of 28S rDNA and ) and physiological races were determined on 10 differential rice cultivars.