Table 2.

Effects of different color films on stoma density and size of A. roxburghii leaves.

Treatment	Stomatal frequency (number/μm2)	Stomatal length (μm)	Stomatal width (μm)	Length × width (μm2)
RF	13.95 ± 0.04b	39.01 ± 0.57b	22.95 ± 0.33a	868.56 @ 44.58b
YF	16.74 ± 0.05a	33.22 ± 0.95d	23.61 ± 0.87a	763.56 @ 52.87c
BF	16.75 ± 0.03a	34.65 ± 1.00c	23.17 ± 0.50a	816.43 @ 27.28bc
CLF-CK	12.51 ± 0.08c	41.09 ± 0.19a	24.26 ± 1.50a	969.27 @ 67.20a

Values are the means ± SE of triplicate assays. Data in columns with the different letters are significantly different P < 0.05.