. 2022 Aug 26;11(17):2219. doi: 10.3390/plants11172219

Table 4.

Effects of spraying ethephon on anatomical structure of the basal third internode.

Year	Treatment	Tissue Thickness		The Area of Vascular Bundles (mm²)		The Number of Vascular Bundles (No.)
Year	Treatment	Sclerenchyma (μm)	Lignified Parenchyma (mm)	Small Vascular Bundles	Big Vascular Bundles	Small Vascular Bundles	Big Vascular Bundles
2020	LCK	52.7 ^a	1.67 ^a	0.17 ^a	0.20 ^a	426 ^a	199 ^a
	MCK	45.3 ^b	1.56 ^a	0.16 ^b	0.19 ^b	365 ^c	156 ^c
	ME	52.6 ^a	1.63 ^a	0.17 ^a	0.20 ^a	404 ^b	177 ^b
	HCK	34.2 ^c	1.36 ^b	0.13 ^c	0.16 ^c	318 ^d	123 ^d
	HE	52.4 ^a	1.57 ^a	0.16 ^b	0.20 ^ab	401 ^b	185 ^ab
2021	LCK	62.0 ^a	1.98 ^a	0.18 ^a	0.21 ^a	374 ^a	175 ^a
	MCK	53.7 ^b	1.77 ^b	0.16 ^b	0.20 ^a	323 ^c	143 ^b
	ME	62.8 ^a	1.88 ^a	0.18 ^a	0.21 ^a	329 ^c	137 ^b
	HCK	45.9 ^c	1.55 ^c	0.15 ^c	0.17 ^b	283 ^d	111 ^c
	HE	61.3 ^a	1.90 ^a	0.17 ^a	0.21 ^a	342 ^b	106 ^c
ANOVA
Year (Y)		**	**	**	**	**	**
Density (D)		**	**	**	**	**	**
Ethephon (E)		**	**	**	**	**	**
Y × D		ns	ns	*	ns	ns	**
Y × E		ns	ns	ns	ns	**	**
D × E		**	**	**	**	**	ns
Y × D × E		ns	ns	ns	ns	ns	**

LCK, MCK, ME, HCK and HE were the treatments of low density control, medium density control, medium density sprayed with ethephon, high density control and high density sprayed with ethephon, respectively. Different lowercase letters in the table indicated significant difference at 5% level. ns, no significance. *, significant at 0.05 probability level. **, significant at 0.01 probability level.