PJB-1974-7
EFFECT OF DIFFERENT CARBON SOURCES ON SPORE GERMINATION OF HELMINTHOSPORIUM ORYZAE
MUHAMMAD RIAZ, ABID NISAR AHMAD, JAFFAR HUSSAIN MIRZA AND MASOUD AHMAD
NASIR
Abstract
Out of the monosacchrides and oligosaccharides D(+)---glucose and D(+)--- sucrose were found to be the best carbon sources for the germination of spores of helminthosporium oryzae , Whereas D (+) – minnose did not favour spore germination at 2 to 5 percent concentrations. Distilled water did not enhance the germination of spores but a stimulatory effect was observed in tap water. There was no germination in any of the concentrations of oxalic and malic acids even after 5 days. Mostly mono and bipolar type germination was noticed . A gradual change in color of conidia from dark brown to light brown was observed.
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