Growth and Comprehensive Quality Index of Tomato under Rain Shelters in Response to Different Irrigation and Drainage Treatments

Table 3

The correlation matrix of single quality attributes of tomato.

Years		X1	X2	X3	X4	X5	X6
2011	X1	1
	X2	0.917	1
	X3	0.981	0.971	1
	X4	0.906	0.946	0.933	1
	X5	0.381	0.725	0.706	0.380	1
	X6	0.413	0.454	0.344	0.413	−0.997	1
2012	X1	1
	X2	0.983	1
	X3	0.992	0.995	1
	X4	0.976	0.941	0.948	1
	X5	0.598	0.726	0.679	0.465	1
	X6	0.427	0.574	0.524	0.273	−0.978	1

Note: The letter codes are X1 (soluble sugar, SS), X2 (total soluble solids, TSS), X3 (organic acid, OA), X4 (Vitamin C, V_C), X5 (mean single fruit weight, MSW), and X6 (mean single fruit volume, MSV).