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PATHOGENECITY AND TRANSMISSION STUDIES OF SEED-BORNE FUSARIUM   SPECIES (SEC. LISEOLA AND SPOROTRICHIELLA) IN SUNFLOWER

SHARFUN-NAHAR AND MUHAMMAD MUSHTAQ*

Abstract: Pathogenicity of 6 Fusarium spp. viz., F. anthophilum, F. moniliforme, F. proliferatum, and F. subglutinans (from section Liseola) and F. chlamydosporum and F. sporotrichioides (from section Sporotrichiella) were tested on sunflower plants. Symptoms produced by Fusarium spp., were wilting, collar-, stem- and seedling rots, damping-off, stunting, yellowing, tip burning and reduction in growth. Wilting and seedling rot were found to be the most prominent symptoms produced by all Fusarium spp. Highest wilting was observed in plants inoculated by F. chlamydosporum and F. subglutinans whereas highest seedling rot was observed by F. sporotrichioides. In transmission studies, F. anthophilum and F. subglutinans were found to be internally seed-borne pathogens of sunflower.
 

Central Plant Quarantine Laboratory (CPQL), Department of Plant Protection, Jinnah Avenue, Malir Halt Karachi, 75100 Pakistan.
Corresponding Author: sharfun_nahar @ yahoo.com