Response of Leaf Functional Traits and their relationships to Seasonal Changes in Four Acer Species

doi:10.7525/j.issn.1673-5102.2023.02.009

Abstract

Abstract:

Four species of Acer （A. mandshuricum， A. tataricum subsp. ginnala.， A. saccharum， A. pictum subsp. mono）on Mudanjang were selected as materials in spring， summer and autumn， respectively， and the seasonal variation trend of leaf traits（e.g. leaf thickness（T_L）， stomata length（L_S）， stomata width（W_S）， stomata density（D_S）， leaf vein density（D_V）， specific leaf area（A_SL） and pigment content） were analyzed， and the relationship between pigments and leaf morphological traits in different seasons were explored respectively. The result showed that：（1）Four kinds of Acer species showed higher T_L， lower A_SL and D_S in summer， higher A_SL and D_V， lower T_L in autumn. （2）The chlorophyll a and b of four Acer species were higher in summer， and the pigment content decreased in autumn. Their seasonal variation ranges were chlorophyll a 77.40%-98.80%， chlorophyll b 85.60%-99.53%， and carotenoids 4.29%-78.52%. （3）Pigment was closely related to leaf morphological traits. Under seasonal dynamics， pigments were positively correlated with A_SL， D_S and D_V， and negatively correlated with T_L， L_S and W_S（P<0.05）， but the correlations were slightly different in different seasons. The leaf was formed different construction strategies in response to climatic conditions in different seasons in four color species. The variation of leaf functional traits reflected the trade-off mechanism of colored-leaf plants adapting to seasonal changes.

Key words: seasonal dynamics, morphological traits, pigment, colored-leaf plant, correlation

CLC Number:

S792.35

Yang LIU, Liying XU, Tongchao WEI, Lanyi SHEN, Dounan LIU, Yue LIU. Response of Leaf Functional Traits and their relationships to Seasonal Changes in Four Acer Species[J]. Bulletin of Botanical Research, 2023, 43(2): 242-250.

Figures/Tables 5

Table 1

Fig.1

Table 2

Table 3

Fig.2

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物种 Species	季节 Season	叶绿素a Chlorophyll a /（mg·g^-1）	叶绿素b Chlorophyll b /（mg·g^-1）	类胡萝卜素 Carotinoid /（mg·g^-1）	叶绿素a/b Chla/b
白牛槭 AM	春季Spring	2.85±0.04b	1.12±0.03a	0.52±0.01a	2.54
	夏季Summer	3.20±0.02a	1.19±0.07a	0.30±0.03b	2.69
	秋季Autumn	0.72±0.02c	0.17±0.01b	0.31±0.01b	4.23
茶条槭 AG	春季Spring	2.52±0.01b	0.83±0.01a	0.53±0.01a	3.05
	夏季Summer	2.97±0.12a	0.79±0.09a	0.37±0.03b	3.74
	秋季Autumn	0.04±0.01c	0.02±0.01b	0.21±0.00c	1.70
糖槭 AS	春季Spring	1.00±0.03b	0.21±0.01b	0.24±0.01b	4.67
	夏季Summer	2.29±0.31a	0.50±0.06a	0.47±0.08a	4.61
	秋季Autumn	0.03±0.01c	0.02±0.01c	0.10±0.01b	1.87
五角槭 AP	春季Spring	1.42±0.05a	0.61±0.10a	0.24±0.01a	2.33
	夏季Summer	1.62±0.56a	0.89±0.20a	0.29±0.08a	1.86
	秋季Autumn	0.02±0.01b	0.004±0.003b	0.22±0.01a	5.50

季节 Season		T_L	A_SL	D_S	L_S	W_S	D_V	ω_Chla	ω_Chlb
春季 Spring	A_SL	-0.727	1
	D_S	-0.152	-0.568	1
	L_S	0.876	-0.310	-0.603	1
	W_S	0.894	-0.539	-0.295	0.823	1
	D_V	0.123	-0.752	0.937	-0.371	0.049	1
	ω_Chla	-0.895	0.386	0.519	-0.987^*	-0.769	0.314	1
	ω_Chlb	-0.986^*	0.608	0.307	-0.943	-0.889	0.042	0.954^*	1
	ω_Car	-0.749	0.153	0.678	-0.956^*	-0.620	0.536	0.966^*	0.844
夏季 Summer	A_SL	-0.555	1
	D_S	-0.225	-0.662	1
	L_S	0.672	-0.147	-0.568	1
	W_S	0.859	-0.142	-0.648	0.905	1
	D_V	-0.368	-0.300	0.820	-0.897	-0.783	1.
	ω_Chla	-0.445	0.018	0.559	-0.961^*	-0.763	0.931	1
	ω_Chlb	-0.974^*	0.724	0.020	-0.624	-0.761	0.254	0.408	1
	ω_Car	0.901	-0.591	-0.002	0.287	0.597	0.031	-0.014	-0.885
秋季 Autumn	A_SL	0.132	1
	D_S	-0.213	-0.873	1
	L_S	0.489	0.126	-0.572	1
	W_S	0.720	0.683	-0.831	0.702	1
	D_V	-0.291	-0.774	0.983^*	-0.714	-0.867	1
	ω_Chla	-0.307	0.740	-0.351	-0.567	0.053	-0.172	1
	ω_Chlb	-0.295	0.699	-0.287	-0.619	0.013	-0.105	0.997^**	1
	ω_Car	-0.824	0.373	-0.099	-0.627	-0.410	0.056	0.791	0.780

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