Effect of polyamines and endo-mycorrhiza on chlorophyll a, b ratio and total carotenoids in leaves of Sorghum grown under cadmium toxicity

The present study was carried out to evaluate the compatibility of polyamines and mycorrhiza in the mitigation of induced toxic effect of cadmium at 30, 60 and 90 DAS older of Sorghum variety CSV15. The significant hazardous effects and oxidative damage of cadmium nitrate (70 ppm and 150ppm) were evidenced by decreased content of chlorophyll a, b ratio and average of total carotenoids (mg g-1 fresh weight). The reverse responses were observed d by the external application of putrescine (2.5 and 5.0 mM) and mycorrhiza (Glomus; 150 inoculants per kg of soil).