Table 2. Leaf color traits under control Group. (25 °C) The color was described by value of spectrophotometry and the number of the Royal Horticultural Society Color Chart.

Cultivar	Stage	L*	a*	b*	RHSCC
H	T0	26.24 ± 1.20c	2.35 ± 0.60b	−1.70 ± 0.40c	BLACK 202A
F	T0	29.69 ± 1.44ab	7.96 ± 2.28a	5.56 ± 1.36ab	GREY-BROWN N199B
X	T0	31.97 ± 4.17a	−10.79 ± 3.74c	12.94 ± 7.72a	GREEN 139B

Notes.

The parameter L^* indicates the lightness of leaves, the number is bigger, the color is closer to white. The parameter a^* indicates green and red, the number is bigger, the color is closer to red, otherwise it is closer to green. The parameter b^* indicates yellow and blue, the number is bigger, the color is closer to yellow, otherwise it is closer to blue. Different letters indicate significant differences at p ≤ 0.05 based on Duncan’s new multiple range test.