PJB-1970-18
Physiological studies on collectotrichum dematium f. truncate, the fungus anthracnose of phaseolus mungo linn
MUKHTAR AHMAD
AND J.H. MIRZA
Abstract
Conidia of collectotrichum dematium f.
truncate, the fungas isolated from diseased stems of phaseolus mungo showed good germination in dextrose solution of differeny strengths as well as in distilled water, and 2 % aquous solutions of sucrose and lactose. Its growth and sporulation was best after
15 days in hasal agar medium containing sucrose and dextrose respectively. The minimum , optimum, and maximum temperatures for its growth and sporulation were found to be about 20,
30 and 35 C. the nitrogen source best suited to this fungus was found to be ammonium nitrate. A pH of 4.8 was most suitable for the growth of the fungus. Its sporulation was best between a pH range of 6.1 and 7.8.
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