雌雄异株树种山杨、水曲柳和东北红豆杉光合特性对比

doi:10.12302/j.issn.1000-2006.202107023

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南京林业大学学报（自然科学版） ›› 2023, Vol. 47 ›› Issue (1): 129-135.doi: 10.12302/j.issn.1000-2006.202107023

雌雄异株树种山杨、水曲柳和东北红豆杉光合特性对比

孙晓伟¹(), 王兴昌¹, 孙慧珍¹^,^*(), 全先奎¹, 杨青杰²

1.东北林业大学林学院生态研究中心,森林生态系统可持续经营教育部重点实验室,黑龙江哈尔滨 150040
2.东北林业大学功能性草业工程技术研究中心,黑龙江哈尔滨 150040

收稿日期:2021-07-16 接受日期:2021-09-13 出版日期:2023-01-30 发布日期:2023-02-01
通讯作者: 孙慧珍
作者简介:孙晓伟(livvys@qq.com)。
基金资助:
中央高校基本科研业务费专项基金项目(2572019CP14);中央高校基本科研业务费专项基金项目(2572018BA05);国家自然科学基金面上项目(32072666)

Photosynthetic characteristics of dioecious Populus davidiana, Fraxinus mandshurica and Taxus cuspidata

SUN Xiaowei¹(), WANG Xingchang¹, SUN Huizhen¹^,^*(), QUAN Xiankui¹, YANG Qingjie²

1. Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
2. Engineering and Technology Research Center for Functional Prataculture, Northeast Forestry University, Harbin 150040, China

Received:2021-07-16 Accepted:2021-09-13 Online:2023-01-30 Published:2023-02-01
Contact: SUN Huizhen

摘要/Abstract

摘要： 【目的】 探究雌雄异株树种的光合生理生态特性,为正确评价其对环境的适应机制以及确定影响种群建成的因素提供理论参考。【方法】 以野外成树为研究对象,通过Li-6400XT便携式光合作用测定仪对比分析了山杨(Populus davidiana)、水曲柳(Fraxinus mandshurica)和东北红豆杉(Taxus cuspidata)雌雄株叶片气体交换参数。【结果】 3个树种整体上雌株光合特性优于雄株,雌雄株参数仅在山杨光补偿点(P_LCP)和最大羧化速率(C_E,max),水曲柳水分利用效率(E_WUE),东北红豆杉光饱和点(P_LSP)、光补偿点、羧化效率(C_E)和光呼吸速率(R_p)之间差异显著(P<0.05)。另外,雌株的叶性状指标并不低于雄株的。【结论】 3个树种雌株较优的光合特性可能存在获取资源的补偿机制,以同时满足营养生长和生殖生长的生存需求。

关键词: 光响应曲线, CO₂响应曲线, 光合参数, 补偿机制, 雌雄异株

Abstract:

【Objective】 Exploring the photosynthetic characteristics of both sexes is valuable for additional assessment of environmental adaptation mechanisms and population formation in dioecious tree species.【Method】In the present study, the leaf photosynthetic gas exchange parameters of adult females and males of Populus davidiana, Fraxinus mandshurica and Taxus cuspidata were measured using a Li-6400XT portable photosynthesis system. 【Result】 Three female tree species consistently presented superior photosynthetic properties than the opposite sex even though significant differences were only observed at the light compensation point (P_LCP) and maximum carboxylation rate (C_E,max) of P. davidiana, water use efficiency (E_WUE) of F. mandshurica, and at the light saturation/compensation point (P_LSP/P_LCP), carboxylation efficiency (C_E), and light respiration rate (R_p) of T. cuspidata between genders. Leaf traits parameters for three female tree species exhibited a non-significant trend with higher values than those of males. 【Conclusion】 These results indicate that the three female tree species with higher photosynthetic capacity may exhibit compensatory mechanisms for simultaneously maintaining vegetative and reproductive growth to maximize lifetime fitness.

Key words: light response curve, CO₂ response curve, photosynthesis parameter, compensatory mechanism, dioecy

中图分类号:

S722

孙晓伟,王兴昌,孙慧珍,等. 雌雄异株树种山杨、水曲柳和东北红豆杉光合特性对比[J]. 南京林业大学学报（自然科学版）, 2023, 47(1): 129-135.

SUN Xiaowei, WANG Xingchang, SUN Huizhen, QUAN Xiankui, YANG Qingjie. Photosynthetic characteristics of dioecious Populus davidiana, Fraxinus mandshurica and Taxus cuspidata[J].Journal of Nanjing Forestry University (Natural Science Edition), 2023, 47(1): 129-135.DOI: 10.12302/j.issn.1000-2006.202107023.

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树种 species	性别 gender	单叶面积/ cm² LA	比叶重/ (g·m^-2) LMA	叶干物质含量 LDMC	叶片氮含量/ (g·m^-2) LNC
山杨 Pd	♀	17.12±1.32 b	68.75±1.36 b	0.42±0.01 a	1.73±0.06 b
	♂	15.52±1.15 b	72.76±2.57 b	0.44±0.01 a	1.71±0.05 b
水曲柳 Fm	♀	28.93±2.04 a	63.58±5.13 b	0.31±0.02 b	1.53±0.16 b
	♂	27.13±1.82 a	57.39±3.11 b	0.30±0.02 b	1.43±0.10 b
东北红豆杉 Tc	♀	0.39±0.03 c	129.73±11.70 a	0.30±0.01 b	2.93±0.31 a
	♂	0.33±0.03 c	111.81±11.36 a	0.31±0.01 b	2.43±0.29 a

树种 species	性别 gender	P_n / (μmol·m^-2·s^-1)	P_n,max / (μmol·m^-2·s^-1)	A_max / (μmol·m^-2·s^-1)	C_s / (mol·m^-2·s^-1)	T_r / (mmol·m^-2·s^-1)	E_WUE / (μmol·mmol^-1)	R_d / (μmol·m^-2·s^-1)
山杨 Pd	♀	10.96±1.22 b	10.49±1.25 b	29.49±1.07 a	0.18±0.03 b	1.90±0.33 b	6.03±0.59 a	1.60±0.05 a
	♂	9.33±0.26 b	9.68±0.38 b	26.30±1.51 a	0.15±0.02 b	1.88±0.11 b	5.01±0.27 ab	1.33±0.19 ab
水曲柳 Fm	♀	15.45±0.98 a	14.06±0.90 a	28.13±1.49 a	0.27±0.03 a	2.87±0.32 a	5.58±0.43 a	0.94±0.08 bc
	♂	14.92±1.26 a	14.76±1.26 a	26.57±2.63 a	0.29±0.03 a	3.43±0.38 a	4.43±0.18 bc	1.23±0.14 b
东北红豆杉Tc	♀	3.66±0.72 c	2.85±0.78 c	14.30±1.92 b	0.03±0.01 c	0.80±0.20 c	4.77±0.76 abc	0.40±0.06 d
	♂	2.92±0.55 c	3.25±0.40 c	9.90±1.01 b	0.03±0.01 c	0.70±0.07 c	4.14±0.67 c	0.77±0.17 cd
树种 species	性别 gender	P_LSP / (μmol·m^-2·s^-1)	P_LCP / (μmol·m^-2·s^-1)	η_AQY	C_E / (mol·m^-2·s^-1)	R_P / (μmol·m^-2·s^-1)	C_E,max / (μmol·m^-2·s^-1)	R_ET,max / (μmol·m^-2·s^-1)
山杨 Pd	♀	1 522.20±107.48 ab	31.06±1.36 a	0.035±0.002 a	0.056±0.007 b	4.11±0.42 b	47.68±4.58 b	135.89±12.56 a
	♂	1 399.41±134.54 b	23.48±2.58 b	0.036±0.002 a	0.049±0.002 bc	3.73±0.24 b	40.34±1.81 c	118.44±8.04 a
水曲柳 Fm	♀	1 955.52±292.68 a	17.45±1.55 b	0.040±0.002 a	0.084±0.006 a	7.08±0.51 a	62.32±4.14 a	125.77±6.67 a
	♂	1 876.74±104.91 a	23.83±2.38 ab	0.038±0.002 a	0.080±0.008 a	7.00±0.61 a	56.22±4.16 a	114.24±10.86 a
东北红豆杉Tc	♀	1 017.85±12.12 c	19.27±4.38 b	0.014±0.004 b	0.032±0.004 c	2.81±0.21 b	21.49±2.81 d	60.18±7.30 b
	♂	1 341.43±57.18 b	33.08±10.43 a	0.015±0.001 b	0.020±0.002 d	1.76±0.14 c	14.39±1.68 d	40.97±4.01 b

雌雄异株树种山杨、水曲柳和东北红豆杉光合特性对比

Photosynthetic characteristics of dioecious Populus davidiana, Fraxinus mandshurica and Taxus cuspidata

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