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Study of Leaf Blight Symptoms Caused by D. Soro- Kiniana and A, Tritlclna on Wheat

A. Q. M. Bazlur Rashid
Institute of Nuclear Agriculture P. O. Box No 4 , Mymensingh, Bangladesh.

M. Jalaluddin
Institute of Nuclear Agriculture P. O. Box No 4 , Mymensingh, Bangladesh.

M. S. Rahman
Institute of Nuclear Agriculture P. O. Box No 4 , Mymensingh, Bangladesh.

Abstract/ Executive Summary:

The leaf blights of wheat caused by Drechslsra s orokiniana And Alternaria triticina are very often confused. Glasshouse al well as field experiments. were carried out to provide a clear picture of the nature of blight symptoms and methods of field diagnosis of the diseases incited by the two Pathogens. The wheat cultivar 'Balaka' which was susceptible to both the pathogens was used in this study. The disease~ infecd by the two fungi were reproduced by artificial inoculations. Detailed symptoms and some distinguishing field diagnostic characters have been pointed out.

Keywords: Study, Leaf blight, Wheat

Location:

Start Date: 00-00-1982

End Date: 00-00-1983

Program Area: Pest Management

Commodity: Wheat

Objectives:

To make distinction of the nature of blight symptoms produced by the two pathogens and use those as methods of diagnosis.

Methodology:

The study was carried out during 1982-83 in glasshouse pot experiments as well as in the field. The wheat cuItivar 'Balaka' which was susceptible to both D. sorokiniana and A. triticina was used in this study. The isolates of these pathogens were originally obtained separately from blighted wheat leaves and their pure cultures were maintained on potato dextrose-agar ( Nema and Joshi, 1972 ), at 5"C±1°C. The plants were inoculated at different growth stages by spraying SO ml. of spore suspension (C&. 7,500 spores! ml.) of the fungi. The spore suspensions were prepared by scraping spores from 7 day-old cultures in sterilized water and strained through cheese cloth prior to use. For mixed inoculation, spore suspension of the two fungi were mixed in the proportion of 1 : 1 by volume. The control sets got sprayed with sterile water. The inoculated plants in the glasshouse were kept in moist chambers for maintaining requisites humidity. Detailed symptoms of the diseases incited by the two pathogens independently as well as in mixture were recorded.

Source of Information: Bangladesh J. Agril. Sc 11(2) ; 197-201 1985. ISSN 0379-4296

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The disease infected by the two fungi were reproduced by artificial inoculations. Detailed symptoms and some distinguishing field diagnostic characters have been pointed out.

Knowledge Management: Journal