Chromium (VI) Induced Biochemical Changes and Gum Content in Cluster Bean (Cyamopsis tetragonoloba L.) at Different Developmental Stages

Table 1

Effect of Cr (VI) on total chlorophyll, chlorophyll a and b, and carotenoids (mg g⁻¹ fresh weight) in leaves of clusterbean plant at different stages of growth.

Cr (VI) mg kg^−1 soil	Days after sowing (DAS)
	30	50	65	30	50	65	30	50	65	30	50	65
	Total chlorophyll			Chlorophyll a			Chlorophyll b			Carotenoids
0.0	2.73	3.32	2.69	1.64	1.81	1.56	0.27	0.39	0.28	0.81	1.11	0.84
0.5	2.61	2.84	2.38	1.48	1.56	1.37	0.22	0.31	0.25	0.89	0.96	0.75
1.0	2.03	2.33	1.94	1.22	1.33	1.11	0.16	0.26	0.20	0.66	0.74	0.61
2.0	1.75	1.87	1.58	0.98	1.06	0.88	0.10	0.19	0.14	0.55	0.65	0.50
	A	B	A × B	A	B	A × B	A	B	A × B	A	B	A × B
SE (m)	0.01	0.01	0.01	0.02	0.01	0.01	0.01	0.01	0.02	0.02	0.01	0.01
CD at 5%	0.02	0.03	0.02	0.04	0.02	0.02	0.03	0.03	0.05	0.07	0.02	0.03