Fluorescence parameters for drought stress diagnosis in detached leaves of ten tree species

DUAN Ai-guo; YANG Wen-zhong; ZHANG Jian-guo; ZHANG Jun-pei1; HE Cai-yun

doi:10.11833/j.issn.2095-0756.2010.04.009

Volume 27 Issue 4

Aug. 2010

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DUAN Ai-guo, YANG Wen-zhong, ZHANG Jian-guo, ZHANG Jun-pei1, HE Cai-yun. Fluorescence parameters for drought stress diagnosis in detached leaves of ten tree species[J]. Journal of Zhejiang A&F University, 2010, 27(4): 529-537. doi: 10.11833/j.issn.2095-0756.2010.04.009

Citation:

DUAN Ai-guo, YANG Wen-zhong, ZHANG Jian-guo, ZHANG Jun-pei1, HE Cai-yun. Fluorescence parameters for drought stress diagnosis in detached leaves of ten tree species[J]. Journal of Zhejiang A&F University, 2010, 27(4): 529-537. doi: 10.11833/j.issn.2095-0756.2010.04.009

Fluorescence parameters for drought stress diagnosis in detached leaves of ten tree species

doi: 10.11833/j.issn.2095-0756.2010.04.009

1.
Key Laboratory of Forest Silviculture of the State Forestry Administration，Research Institute of Forestry，The Chinese Academy of Forestry;
2.
Beijing 100091，China;

More Information

Corresponding author: DUAN Ai-guo
Publish Date: 2010-08-20

Abstract

The response to drought stress for fluorescence parameters from detached leaves of 10 tree species used for vegetative restoration in hot，dry valleys was undertaken. Results showed that：1） Jatropha curcas and Azadirachta indica leaves had the highest water holding capacity followed by Acacia auriculiformis and three Eucalyptus species（E. camaldolensia，E. citriodora and E. globulue），then followed by Cajanus cajan，Albizia kalkor and Leucaena glauca with Acacia glauca having the lowest. 2） Differences in water-loss rate（WLR） for the fluorescence parameter Fo were divided into two types：initiative and passive resistance types. The initiative resistance type had a higher leaf water holding capacity than the other type，meaning the tree species with high leaf water holding capacity had a greater capacity to avoid harm from drought-stress by starting a heat dissipation mechanism to protect photosynthetic organs and by delaying the reversible vitality loss which occurred with water stress. 3） Fluorescence parameters Fm and Fv either decreased as WLR increased；Fv /Fm and Fmv /Fms had a predominantly linear decrease. For each species the decrease in Fv /Fm and Fmv /Fms had a sharp downward dip，which could be the key point where the PSⅡ reaction centre lost its vitality. 4） Fmv /Fms could be more sensitive to damage of the PSⅡ reaction centre than Fv /Fm；however，both parameters showed a significantly quantitative relationship to the leaf WLR. Thus，Fv /Fm and Fmv /Fms offered a possible diagnostic index for a plants leaf water status.［Ch，4 fig. 2 tab. 17 ref.］
- forest biology,
- water stress,
- chlorophyll fluorescence parameters,
- quantitative analysis,
- hot-dry valleys

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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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Fluorescence parameters for drought stress diagnosis in detached leaves of ten tree species

1. Key Laboratory of Forest Silviculture of the State Forestry Administration，Research Institute of Forestry，The Chinese Academy of Forestry;

2. Beijing 100091，China;

Corresponding author: DUAN Ai-guo

Publish Date: 2010-08-20

Key words:

Abstract: The response to drought stress for fluorescence parameters from detached leaves of 10 tree species used for vegetative restoration in hot，dry valleys was undertaken. Results showed that：1） Jatropha curcas and Azadirachta indica leaves had the highest water holding capacity followed by Acacia auriculiformis and three Eucalyptus species（E. camaldolensia，E. citriodora and E. globulue），then followed by Cajanus cajan，Albizia kalkor and Leucaena glauca with Acacia glauca having the lowest. 2） Differences in water-loss rate（WLR） for the fluorescence parameter Fo were divided into two types：initiative and passive resistance types. The initiative resistance type had a higher leaf water holding capacity than the other type，meaning the tree species with high leaf water holding capacity had a greater capacity to avoid harm from drought-stress by starting a heat dissipation mechanism to protect photosynthetic organs and by delaying the reversible vitality loss which occurred with water stress. 3） Fluorescence parameters Fm and Fv either decreased as WLR increased；Fv /Fm and Fmv /Fms had a predominantly linear decrease. For each species the decrease in Fv /Fm and Fmv /Fms had a sharp downward dip，which could be the key point where the PSⅡ reaction centre lost its vitality. 4） Fmv /Fms could be more sensitive to damage of the PSⅡ reaction centre than Fv /Fm；however，both parameters showed a significantly quantitative relationship to the leaf WLR. Thus，Fv /Fm and Fmv /Fms offered a possible diagnostic index for a plants leaf water status.［Ch，4 fig. 2 tab. 17 ref.］

Fluorescence parameters for drought stress diagnosis in detached leaves of ten tree species

doi: 10.11833/j.issn.2095-0756.2010.04.009

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

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