PJB-1988-33
The effect of carbetamide herbicide on pigment contents , carbohydrate and nitrogen levels and 14CO2 – photoassimilation in chlorella vulgaris
M.E.H.
OSMAN, M.E. YOUNIS AND A.I. SOLIMAN
Abstract
Treatments of chlorella vulgaris with
carbetamide (-1-(ethylcarbamyol) ethyl phenyl carbamate) induced changes in pigment content , 5 ppm showed considerable increase in pigment content
, when 25 and 50 ppm induced bleaching after 5 and 7 days , respectively . thereafter , a remarkeable re-greening of these cultures was observed . carbetamide treatment reduced
carbohydrate components associated with an increase in nitrogen component at high concentration of the herbicide. Carbeta mide induced changes in the pattern of
14CO2-photoassimilation. A significant
increase in the ratio of soluble/insoluble
products was obtained , this being indicative that the rate of transformation of soluble to insoluble photosynthates
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