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Chlorophyll fractions a, b and total chlorophyll were determined in the acetone extract (80% v/v) (Arnon, 1949) measured in a spectrophotometer at 645, 652nm and 663 nm and the concentration were expressed as mg chlorophyll g-1 fresh weight by using the following equations 1 663 645 " "(mgg f.w) [12.7 D 2.69 D ] 1000 vw Chl a x x x = 1 645 663 " "(mgg f .w) [22.9 D 4.68 D ] 1000 vw Chl b x x x = 1 652 (mgg f .w) D 1000 1000 vw TotalChl x x = Where D = optical density

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