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OCCURRENCE OF GERLACHIA ORYZAE (HASHIOKA & YOKOGI) W. GAMS (SYN. RHYNCHOSPORIUM ORYZAE HASHIOKA & YOKOGI) ON RICE SEEDS IN PAKISTAN

S.A. JAMIL KHAN, M. JALALUDDIN* AND A. GHAFFAR*

Abstract: Geriachia oryzae (Hashioka & Yokogi) W. Gams (Syn. Rhynchosporium oryzae Hashioka & Yokogi), a dematacious fungus is wide spread in the rice growing areas of the world (Baker & Miah, 1975; Miah et al., 1985; Ou, 1985). It is seed-borne and is known to cause leaf scald and also ear blight which produces sterility of the grains (Hashioka & Ikegami, 1955; Naito, 1982). During the course of our studies on the location of fungi in different parts of seed, G. oryzae was also detected on rice seeds which does not appear to have been previously reported from Pakistan (Mirza & Qureshi. 1978).

Crop Diseases Research Institute, PARC, Karachi University Campus, Karachi-75270, Pakistan.
Department of Botany, University of Karachi, Karachi-75270, Pakistan.