Photosynthetic characteristics of <em>Eurya muricata</em> at seedling stage

YINGYe-qing; WU Jia-sheng; DAI Wen-sheng; LI Zhang-ju

Volume 21 Issue 4

Jul. 2017

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YINGYe-qing, WU Jia-sheng, DAI Wen-sheng, LI Zhang-ju. Photosynthetic characteristics of Eurya muricata at seedling stage[J]. Journal of Zhejiang A&F University, 2004, 21(4): 366-370.

Citation:

YINGYe-qing, WU Jia-sheng, DAI Wen-sheng, LI Zhang-ju. Photosynthetic characteristics of Eurya muricata at seedling stage[J]. Journal of Zhejiang A&F University, 2004, 21(4): 366-370.

Photosynthetic characteristics of Eurya muricata at seedling stage

1.
School of Life Sciences , Zhejiang Forestry College , Lin’an 311300, Zhejiang , China

Funds:

浙江省科学技术厅基金项目(013138); 浙江省林业厅招标项目(01A02)

Received Date: 2004-05-25
Rev Recd Date: 2004-06-22
Publish Date: 2004-12-20

Abstract

The Li-6400 Portable Photosynthesis System made by American Li-COR Company was used to study the photosynthetic characteristics of Eurya muricata at seedling stage .The results showed that the daily variation of net photosynthetic rate in leaves presented a bimodal curve and an obvious midday depression' phenomenon .The first peak valuewas the highest , which occurred at about 9 :00 a.m ., the net photosynthetic rate was 7.35 molm-2 s-1 ;the second peak value occurred at 16 :00 p.m ., the net photosynthetic rate was 2.64 mol m-2 s-1 . The main reason for the midday depression was stomatal factors .At midday , the largest light intensity , the maximum vapor pressure deficit between leaves and air and the minimum air relative humidity , stomatal conductance and intercellular CO2 caused photosynthetic midday depression .The CO2 compensation point was 53.8 molmol-1 and CO2 saturation point was 1 621.4 mol mol-1 .The light compensation point was 42 molm-2 s-1 and light saturation point was about 1 000 molm-2 s-1 .[ Ch , 5 fig .11 ref .]
- tree physiology,
- Eurya muricata,
- photosynthetic characteristics,
- stomatal conductance,
- photosynthesis active radiation

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Photosynthetic characteristics of Eurya muricata at seedling stage

1. School of Life Sciences , Zhejiang Forestry College , Lin’an 311300, Zhejiang , China

Funds:

浙江省科学技术厅基金项目(013138); 浙江省林业厅招标项目(01A02)

Received Date: 2004-05-25

Rev Recd Date: 2004-06-22

Publish Date: 2004-12-20

Key words:

Abstract: The Li-6400 Portable Photosynthesis System made by American Li-COR Company was used to study the photosynthetic characteristics of Eurya muricata at seedling stage .The results showed that the daily variation of net photosynthetic rate in leaves presented a bimodal curve and an obvious midday depression' phenomenon .The first peak valuewas the highest , which occurred at about 9 :00 a.m ., the net photosynthetic rate was 7.35 molm-2 s-1 ;the second peak value occurred at 16 :00 p.m ., the net photosynthetic rate was 2.64 mol m-2 s-1 . The main reason for the midday depression was stomatal factors .At midday , the largest light intensity , the maximum vapor pressure deficit between leaves and air and the minimum air relative humidity , stomatal conductance and intercellular CO2 caused photosynthetic midday depression .The CO2 compensation point was 53.8 molmol-1 and CO2 saturation point was 1 621.4 mol mol-1 .The light compensation point was 42 molm-2 s-1 and light saturation point was about 1 000 molm-2 s-1 .[ Ch , 5 fig .11 ref .]

Photosynthetic characteristics of Eurya muricata at seedling stage

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Photosynthetic characteristics of Eurya muricata at seedling stage

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