Table 4. Comparisons of coefficients of variations on the activities of sucrose metabolism enzymes in cotton fibers of the two cultivars at different soil salinity levels, in years 2013 and 2014.

Year	DPA(d)	Acid invertase activity		Alkaline invertase activity		SuSy activity		SPS activity
		CCRI-79	Simian 3	CCRI-79	Simian 3	CCRI-79	Simian 3	CCRI-79	Simian 3
2013	17	12.07	15.08	10.42	10.42	13.99	19.67	7.35	33.79
	24	15.60	19.05	6.77	6.77	12.53	24.25	9.91	26.35
	31	19.48	19.05	3.78	3.78	13.75	30.31	6.66	18.48
	38	14.84	18.21	10.06	10.06	19.62	37.78	19.01	71.51
2014	17	12.81	13.22	4.47	2.61	9.37	23.36	13.25	21.40
	24	18.64	17.78	10.91	8.83	10.51	16.46	15.19	29.61
	31	22.23	22.25	15.90	15.31	17.00	26.50	16.54	36.72
	38	15.52	15.56	13.82	9.77	13.54	26.58	36.69	60.08

DPA, day post anthesis.