Photosynthetic characteristics of three <em>Coreopsis </em>species

GUO Yun-xue; JIANG Wen-wei; DAI Feng; HUANG Jian-rong

doi:10.11833/j.issn.2095-0756.2012.05.019

Volume 29 Issue 5

Sep. 2012

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GUO Yun-xue, JIANG Wen-wei, DAI Feng, HUANG Jian-rong. Photosynthetic characteristics of three Coreopsis species[J]. Journal of Zhejiang A&F University, 2012, 29(5): 755-761. doi: 10.11833/j.issn.2095-0756.2012.05.019

Citation:

GUO Yun-xue, JIANG Wen-wei, DAI Feng, HUANG Jian-rong. Photosynthetic characteristics of three Coreopsis species[J]. Journal of Zhejiang A&F University, 2012, 29(5): 755-761. doi: 10.11833/j.issn.2095-0756.2012.05.019

Photosynthetic characteristics of three Coreopsis species

doi: 10.11833/j.issn.2095-0756.2012.05.019

1.
School of Landscape Architecture，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;
2.
Shangfang Horticulture Company Limited，Shanghai 201114，China

More Information

Corresponding author: JIANG Wen-wei
Received Date: 2011-10-31
Rev Recd Date: 2011-12-07
Publish Date: 2012-10-20

Abstract

To determine diurnal variation of photosynthetic characteristics and light intensity responses for Coreopsis grandiflora，Coreopsis lanceolata，and Coreopsis rosea an Li-6400 photosynthetic system analyzer was used under natural light conditions. Results indicated different light compensation and light saturation points. The light adaptive range sequence was C. lanceolata ＞ C. grandiflora ＞ C. rosea，and the ability to use relatively strong light was C. lanceolata ＞ C. rosea ＞ C. grandiflora. In addition，diurnal variation in the net photosynthetic rate （Pn） for all three species displayed double-peaked curves with a greater initial peak and a clear photosynthetic noon break. Compared to Pn，the transpiration rate （Tr） and stomatal conductance （Cond） showed similar changes；however，changes in intercellular carbon dioxide concentration （Ci） were reversed. Also，water use efficiency （EWUE） for the three Coreopsis species differed with C. grandiflora ＞ C. lanceolata ＞ C. rosea，which provide the basis for water management of Coreopsis species.［Ch，4 fig. 1 tab. 24 ref.］
- horticulture,
- Coreopsis,
- diurnal variation of photosynthesis,
- response to light intensity,
- environmental factors,
- water-use efficiency

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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 three Coreopsis species

1. School of Landscape Architecture，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. Shangfang Horticulture Company Limited，Shanghai 201114，China

Corresponding author: JIANG Wen-wei

Received Date: 2011-10-31

Rev Recd Date: 2011-12-07

Publish Date: 2012-10-20

Key words:

Abstract: To determine diurnal variation of photosynthetic characteristics and light intensity responses for Coreopsis grandiflora，Coreopsis lanceolata，and Coreopsis rosea an Li-6400 photosynthetic system analyzer was used under natural light conditions. Results indicated different light compensation and light saturation points. The light adaptive range sequence was C. lanceolata ＞ C. grandiflora ＞ C. rosea，and the ability to use relatively strong light was C. lanceolata ＞ C. rosea ＞ C. grandiflora. In addition，diurnal variation in the net photosynthetic rate （Pn） for all three species displayed double-peaked curves with a greater initial peak and a clear photosynthetic noon break. Compared to Pn，the transpiration rate （Tr） and stomatal conductance （Cond） showed similar changes；however，changes in intercellular carbon dioxide concentration （Ci） were reversed. Also，water use efficiency （EWUE） for the three Coreopsis species differed with C. grandiflora ＞ C. lanceolata ＞ C. rosea，which provide the basis for water management of Coreopsis species.［Ch，4 fig. 1 tab. 24 ref.］

Photosynthetic characteristics of three Coreopsis species

doi: 10.11833/j.issn.2095-0756.2012.05.019

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通讯作者: 陈斌, bchen63@163.com

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Photosynthetic characteristics of three Coreopsis species

doi: 10.11833/j.issn.2095-0756.2012.05.019

1. School of Landscape Architecture，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. Shangfang Horticulture Company Limited，Shanghai 201114，China

Corresponding author: JIANG Wen-wei

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Photosynthetic characteristics of three Coreopsis species

doi: 10.11833/j.issn.2095-0756.2012.05.019

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通讯作者: 陈斌, bchen63@163.com

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Photosynthetic characteristics of three Coreopsis species

doi: 10.11833/j.issn.2095-0756.2012.05.019

1. School of Landscape Architecture，Zhejiang A & F University，Lin’an 311300，Zhejiang，China; 2. Shangfang Horticulture Company Limited，Shanghai 201114，China

Corresponding author: JIANG Wen-wei

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1. School of Landscape Architecture，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. Shangfang Horticulture Company Limited，Shanghai 201114，China