Fresh leaves (0.1 g) were taken from each treatment and used to quantify the photosynthetic pigments. The leaves were cut into pieces and placed in plastic tubes with lids containing 5 mL dimethylsulfoxide reagent as organic solvent. The mixture was incubated at 65 Centigrade till the pigments extracted and then analyzed the extract at wavelengths of 480, 649 and 665 nm using the equations by Wellburn (1994) for carotenoids, chlorophyll a and chlorophyll b.