Leaf gas exchange and chlorophyll fluorescence parameters in three species of <EM>Ilex</EM>

WANG Li-ying; LOU Lu-huan; WANG Chao; HUANG Qi; GU Min

Volume 26 Issue 1

Feb. 2009

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WANG Li-ying, LOU Lu-huan, WANG Chao, HUANG Qi, GU Min. Leaf gas exchange and chlorophyll fluorescence parameters in three species of Ilex[J]. Journal of Zhejiang A&F University, 2009, 26(1): 27-31.

Citation:

WANG Li-ying, LOU Lu-huan, WANG Chao, HUANG Qi, GU Min. Leaf gas exchange and chlorophyll fluorescence parameters in three species of Ilex[J]. Journal of Zhejiang A&F University, 2009, 26(1): 27-31.

Leaf gas exchange and chlorophyll fluorescence parameters in three species of Ilex

1.
School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;
2.
School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;
3.
Zhejiang Branch Institute，Shanghai Municipal Engineering Design General Institute，Hangzhou 310004，Zhejiang，China

More Information

Corresponding author: LOU Lu-huan
Received Date: 2008-03-03
Rev Recd Date: 2008-05-16
Publish Date: 2009-02-20

Abstract

The gas exchange and chlorophyll fluorescence parameters in leaves of three broadleaf tree species：Ilex viridis，I. zhejiangensis，and I. cornuta，were determined under field conditions. Results showed that there were no significant differences（P＞0.05） for light compensation point：（20.94 μmol·m－2·s－1 in I. viridis，29.91 μmol·m－2·s－1 in I. zhejiangensis，and 24.02 μmol·m－2·s－1 in I. cornuta）. The light saturation point of I. cornuta was significantly greater（P＜0.05）（1 516.67 μmol·m－2·s－1） than I. viridis （1 204.29 μmol·m－2·s－1） and I. zhejiangensis（1 305.10 μmol·m－2·s－1）. Also，the maximum net photosynthetic rate in I. cornuta was significantly greater（P＜0.05） for CO2 （8.43 μmol·m-2·s-1）than I. viridis （3.33 μmol·m－2·s－1） and I. zhejiangensis（5.53 μmol·m－2·s－1）. Finally，electron transport rate（ETR），photosystem （PS） Ⅱ efficiency（Yield），and non-photochemical quenching（qN） in the leaf were much higher（P＜0.05） in I. cornuta than in I. zhejiangensis and I. viridis. Thus，I. cornuta had a higher photosynthetic capacity and stronger utilization ability for light energy，and its quantum yield of PS II electron transport and the potential capacity of heat dissipation were greater（P＜0.05）. ［Ch，4 fig. 2 tab. 12 ref.］
- botany,
- gas exchange,
- chlorophyll fluorescence,
- Ilex zhejiangensis,
- Ilex viridis,
- Ilex cornuta

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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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Leaf gas exchange and chlorophyll fluorescence parameters in three species of Ilex

1. School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

2. School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

3. Zhejiang Branch Institute，Shanghai Municipal Engineering Design General Institute，Hangzhou 310004，Zhejiang，China

Corresponding author: LOU Lu-huan

Received Date: 2008-03-03

Rev Recd Date: 2008-05-16

Publish Date: 2009-02-20

Key words:

Abstract: The gas exchange and chlorophyll fluorescence parameters in leaves of three broadleaf tree species：Ilex viridis，I. zhejiangensis，and I. cornuta，were determined under field conditions. Results showed that there were no significant differences（P＞0.05） for light compensation point：（20.94 μmol·m－2·s－1 in I. viridis，29.91 μmol·m－2·s－1 in I. zhejiangensis，and 24.02 μmol·m－2·s－1 in I. cornuta）. The light saturation point of I. cornuta was significantly greater（P＜0.05）（1 516.67 μmol·m－2·s－1） than I. viridis （1 204.29 μmol·m－2·s－1） and I. zhejiangensis（1 305.10 μmol·m－2·s－1）. Also，the maximum net photosynthetic rate in I. cornuta was significantly greater（P＜0.05） for CO2 （8.43 μmol·m-2·s-1）than I. viridis （3.33 μmol·m－2·s－1） and I. zhejiangensis（5.53 μmol·m－2·s－1）. Finally，electron transport rate（ETR），photosystem （PS） Ⅱ efficiency（Yield），and non-photochemical quenching（qN） in the leaf were much higher（P＜0.05） in I. cornuta than in I. zhejiangensis and I. viridis. Thus，I. cornuta had a higher photosynthetic capacity and stronger utilization ability for light energy，and its quantum yield of PS II electron transport and the potential capacity of heat dissipation were greater（P＜0.05）. ［Ch，4 fig. 2 tab. 12 ref.］

Leaf gas exchange and chlorophyll fluorescence parameters in three species of Ilex

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