Half-leaf width symmetric distribution reveals buffering strategy of Cunninghamia lanceolata

Peng, Xi; Zhao, Meifang; Liu, Shuguang; Yan, Wende

doi:10.1186/s12870-021-03000-x

BMC Plant Biology

Table 1 Statistical description of leaf width, maximum leaf width, leaf length and half-leaf tipping length ratio in tree age groups, using mean, standard deviation, standard error, 95% confidential intervals (lower and upper value), median, minimum and maximum value

From: Half-leaf width symmetric distribution reveals buffering strategy of Cunninghamia lanceolata

Leaf parameter	Tree age (year)	N*	Mean ± Standard Deviation**	Standard Error	CV%***	95% Confidence Interval
Leaf parameter	Tree age (year)	N*	Mean ± Standard Deviation**	Standard Error	CV%***	[Lower, Upper]	Median [Minimum, Maximum]
Width (cm)	2	386	0.241 ± 0.098 ab	0.005	40.664	[0.231, 0.251]	0.252 [0.002, 0.473]
	5	367	0.234 ± 0.093 ab	0.005	39.744	[0.225, 0.244]	0.24 [0.004, 0.437]
	10	804	0.234 ± 0.09 a	0.003	38.462	[0.228, 0.24]	0.246 [0.01, 0.434]
	13	452	0.23 ± 0.081 ac	0.004	35.217	[0.223, 0.238]	0.247 [0.005, 0.361]
	23	861	0.222 ± 0.08 c	0.003	36.036	[0.217, 0.228]	0.236 [0.012, 0.388]
	30	740	0.242 ± 0.084 b	0.003	34.711	[0.236, 0.249]	0.258 [0.013, 0.387]
	Total	3610	0.233 ± 0.087	0.001	37.339	[0.23, 0.236]	0.246 [0.002, 0.473]
Maximum leaf width (cm)	2	18	0.346 ± 0.055 a	0.013	16.021	[0.319, 0.374]	0.335 [0.277, 0.473]
	5	18	0.330 ± 0.042 ab	0.010	12.699	[0.310, 0.351]	0.326 [0.277, 0.437]
	10	18	0.331 ± 0.048 ab	0.011	14.628	[0.307, 0.356]	0.326 [0.262, 0.434]
	13	18	0.320 ± 0.026 ab	0.006	8.096	[0.307, 0.333]	0.328 [0.266, 0.361]
	23	18	0.334 ± 0.034 ab	0.008	10.176	[0.317, 0.351]	0.334 [0.278, 0.387]
	30	18	0.310 ± 0.040 b	0.009	12.925	[0.290, 0.330]	0.311 [0.204, 0.388]
	Total	108	0.329 ± 0.043	0.004	12.970	[0.321, 0.337]	0.327 [0.204, 0.473]
Length (cm)	2	18	4.32 ± 1.075 ab	0.253	24.884	[3.785, 4.854]	4.240 [2.881, 6.823]
	5	18	3.977 ± 0.904 a	0.213	22.731	[3.527, 4.426]	3.95 [2.433, 6.421]
	10	18	4.518 ± 0.99 ab	0.233	21.912	[4.025, 5.01]	4.311 [2.76, 6.158]
	13	18	4.887 ± 1.169 b	0.276	23.921	[4.306, 5.469]	4.430 [3.702, 7.826]
	23	18	4.484 ± 0.899 ab	0.212	20.049	[4.036, 4.931]	4.690 [2.879, 6.092]
	30	18	4.024 ± 0.424 a	0.100	10.537	[3.814, 4.235]	4.110 [3.225, 4.887]
	Total	108	4.368 ± 0.97	0.093	22.207	[4.183, 4.553]	4.243 [2.433, 7.826]
Half-leaf tipping length ratio	2	18	0.34 ± 0.051 ab	0.012	15.000	[0.315, 0.366]	0.348 [0.191, 0.425]
	5	18	0.328 ± 0.075 ab	0.018	22.866	[0.291, 0.365]	0.345 [0.183, 0.41]
	10	18	0.303 ± 0.08 a	0.019	26.403	[0.264, 0.343]	0.319 [0.123, 0.409]
	13	18	0.365 ± 0.051 bc	0.012	13.973	[0.34, 0.391]	0.362 [0.272, 0.441]
	23	18	0.381 ± 0.104 c	0.024	27.297	[0.33, 0.433]	0.408 [0.1, 0.525]
	30	18	0.361 ± 0.106 c	0.025	29.363	[0.308, 0.414]	0.358 [0.155, 0.593]
	Total	108	0.347 ± 0.083	0.008	23.919	[0.331, 0.362]	0.352 [0.1, 0.593]

* N = sample size. **The differences of the means between tree age groups were tested using a One-Way ANOVA test (Fisher LSD test); different letters denote statistically significant (p < 0.05) differences between the means. *** CV = coefficient of variation

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ISSN: 1471-2229

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