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
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  • Corresponding author: JIANG Wen-wei
  • Received Date: 2011-10-31
  • Rev Recd Date: 2011-12-07
  • Publish Date: 2012-10-20
通讯作者: 陈斌, bchen63@163.com
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    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

doi: 10.11833/j.issn.2095-0756.2012.05.019
    Corresponding author: JIANG Wen-wei

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.]

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

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