PJB-1976-12
Diurnal periodicity and the effect of meterological factors on air- borne fungus-flora
M.A.R. BHATTI
Abstract
Air-borne fungus-flora during may to
September 1957 showed hour to hour variations and their pattern of diurnal periodicity also varied from day to day. on the basis of hourly averages of
several days data alternaria spores had a
major peak at 3 p.m. cereospora spores were maximum in the forenoon whereas hyphal fragments did not show marked variations during 24 hours period. Helminthosporium spores shoed somewhat consistant diurnal pattern being maximum in the afternoon but this pattern was altered, because of a
morning peak due to a spore shower on
july 20 .long hyaline and brown ascospores appeared in the atmosphere after dew or rain but alternaria spores and hyphal fragments disappeared from the atmosphere shortly after rain.
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