中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘光合特性及影响因子

杜社妮; 白岗栓; 李代琼

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中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘光合特性及影响因子

试验研究

- 中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘光合特性及影响因子
- Photosynthetic Characteristics of Chinese Seabuckthorn,Russian Seabuckthorn,Russian Seabuckthorn×Chinese Seabuckthorn and Their Influence Factors
- 水土保持通报 2008年27卷第4期页码：26-32
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
  
  国家“十一五”科技攻关项目(2006BAJ10B0,006BAD09B07)
- DOI：
  中图分类号：
- 纸质出版：2008
- 稿件说明：
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杜社妮, 白岗栓, 李代琼. 中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘光合特性及影响因子[J]. 水土保持通报, 2008,27(4):26-32.

DU She-ni, BAI Gang-shuan, LI Dai-qiong. Photosynthetic Characteristics of Chinese Seabuckthorn,Russian Seabuckthorn,Russian Seabuckthorn×Chinese Seabuckthorn and Their Influence Factors[J]. Bulletin of Soiland Water Conservation, 2008, 27(4): 26-32.
杜社妮, 白岗栓, 李代琼. 中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘光合特性及影响因子[J]. 水土保持通报, 2008,27(4):26-32. DOI：

DU She-ni, BAI Gang-shuan, LI Dai-qiong. Photosynthetic Characteristics of Chinese Seabuckthorn,Russian Seabuckthorn,Russian Seabuckthorn×Chinese Seabuckthorn and Their Influence Factors[J]. Bulletin of Soiland Water Conservation, 2008, 27(4): 26-32. DOI：

摘要

在陕北黄土丘陵沟壑区用LI-6400光合仪对中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘光合特性及影响因子进行了测定。测定结果表明三者的光合速率、气孔导度、胞间CO

浓度、蒸腾速率日变化均为"双峰"曲线。中国沙棘光合"午休"现象较轻

日光合速率和午后光合速率、气孔导度、胞间CO

浓度、蒸腾速率极显著(p

0.01)高于俄罗斯沙棘和俄罗斯沙棘×中国沙棘。中国沙棘光合作用最适气孔导度、大气CO

浓度、空气相对湿度比俄罗斯沙棘小

最适胞间CO

浓度、蒸腾速率、气温、光合有效辐射比俄罗斯沙棘高。中国沙棘在最适气孔导度、胞间CO

浓度、蒸腾速率和大气CO

浓度下的光合速率比俄罗斯沙棘高;在最适气温、空气相对湿度、光合有效辐射下的光合速率比俄罗斯沙棘低。俄罗斯沙棘×中国沙棘光合"午休"现象比中国沙棘强

比俄罗斯沙棘弱

午后光合速率与俄罗斯沙棘相近;俄罗斯沙棘×中国沙棘最适气孔导度、大气CO

浓度高于中国沙棘和俄罗斯沙棘

最适胞间CO

浓度低于中国沙棘和俄罗斯沙棘

最适蒸腾速率、气温、空气相对湿度、光合有效辐射居于中国沙棘和俄罗斯沙棘之间。俄罗斯沙棘×中国沙棘在最适气孔导度下的光合速率高于中国沙棘和俄罗斯沙棘;在最适胞间CO

浓度、蒸腾速率、气温、大气CO

浓度、空气相对湿度、光合有效辐射下的光合速率低于中国沙棘和俄罗斯沙棘。中国沙棘、俄罗斯沙棘和俄罗斯沙棘×中国沙棘的光合速率均与上午的气孔导度、胞间CO

浓度、蒸腾速率、气温、大气CO

浓度、空气相对湿度、光合有效辐射显著相关

均为"抛物线"关系。

Abstract

In order to understand the photosynthetic characteristics of Chinese seabuckthorn

Russian seabuckthorn

and Russian seabuckthorn× Chinese seabuckthorn

research on the 3 species and their influence factors were conducted with Portable LI26400 Photosynthesis System in the loess hilly and gully region of Northern Shaanxi Province.Results showed that diurnal courses of photosynthetic rates

stomatal conductance

intercellular CO2 concentration

and transpiration rate of the 3 species were the doublepeak type curves.Midday depression of Chinese seabuckthorn was light

and diurnal photosynthetic rates and afternoon photosynthetic rates were significantly higher than Russian seabuckthorn and Russian seabuckthorn× Chinese seabuckthorn ( p < 0.01) .Stomatal conductance

intercellular CO2 concentration

and transpiration rate in afternoon for Chinese seabuckthorn were significantly higher than Russian seabuckthorn and Russian seabuckthorn×Chinese seabuckthorn ( p < 0.01) .Optimum stomatal conductance

air CO2 concentration

and air relative humidity for photosynthesis of Chinese seabuckthorn were lower than Russian seabuckthorn

and optimum intercellular CO2 concentration

transpiration rate

air temperature

and photosynthetic active radiation were higher than Russian seabuckthorn.Under the conditions of optimum stomatal conductance

intercellular CO2 concentration

transpiration rate

and air CO2 concentration

photosynthetic rates of Chinese seabuckthorn were higher than Russian seabuckthorn.Under the conditions of optimum air temperature

air relative humidity

and photosynthetic active radiation

photosynthetic rates of Chinese seabuckthorn were lower than Russian seabuckthorn.Midday depression of Russian seabuckthorn×Chinese seabuckthorn was lower than Chinese seabuckthorn and higher than Russian seabuckthorn

and photosynthetic rates were similar to Russian seabuckthorn in afternoon.Optimums stomatal conductance and air CO2 concentration for photosynthesis of Russian seabuckthorn× Chinese seabuckthorn were higher than Chinese seabuckthorn and Russian seabuckthorn ; its optimum intercellular CO2 concentration was lower than Chinese seabuckthorn and Russian seabuckthorn ; and its optimum transpiration rate

air temperature

air relative humidity

and photosynthetic active radiation were between Chinese seabuckthorn and Russian seabuckthorn.Under the condition of optimum stomatal conductance

photosynthetic rates of Russian seabuckthorn× Chinese seabuckthorn were higher than Chinese seabuckthorn and Russian seabuckthorn.Under the condition of optimum intercellular CO2 concentration

transpiration rate

air temperature

air CO2 concentration

air relative humidity

and photosynthetic active radiation

photosynthetic rates of Russian seabuckthorn×Chinese seabuckthorn were lower than Chinese seabuckthorn and Russian seabuckthorn.Photosynthetic rates of the 3 species had significantly correlations with stomatal conductance

intercellular CO2 concentration

transpiration rate

air temperature

air CO2 concentration

air relative humidity

and photosynthetic active radiation in forenoon

and their relationships might be described by a parabola.

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