Gas exchanges and chlorophyll fluorescence characteristics of <em>Sabina vulgaris</em> under drought stress

WEN Guo-sheng; WANG Lin-he; ZHANG Guo-sheng

Volume 21 Issue 4

Jul. 2017

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WEN Guo-sheng, WANG Lin-he, ZHANG Guo-sheng. Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress[J]. Journal of Zhejiang A&F University, 2004, 21(4): 361-365.

Citation:

WEN Guo-sheng, WANG Lin-he, ZHANG Guo-sheng. Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress[J]. Journal of Zhejiang A&F University, 2004, 21(4): 361-365.

Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress

1.
School of Life Sciences, Zhejiang Forestry College , Lin’an 311300, Zhejiang , China;
2.
.School of Forestry , Inner Mongolia Agricultural University , Huhehot 010019 , Inner Mongolia , China

Funds:

国家自然科学基金资助项目(30240033);浙江林学院科学研究发展基金资助项目

Received Date: 2004-04-01
Rev Recd Date: 2004-06-22
Publish Date: 2004-12-20

Abstract

To study the mechanism of drought resistance of Sabina vulgaris , three treatments (the penetration potentials of water cultures were 0.0 , -0.1 , -0.3 MPa respectively ) of control , weak drought stress , strong drought stress were set up in water culture system in greenhouse .The gas exchanges and chlorophyll fluorescence parameters of S .vulgaris were measured under drought stress .The results were as follows :(1) The photosynthesis , transpiration , stomatal conductance of S .vulgaris decreased 46 %, 52 %, 62 % and 24 %, 40 %, and 41 % respectively , while water use efficiency increased 55 %and 31 %under strong drought stress and weak drought stress . (2)When diurnal changing laws of rates of photosynthesis and transpiration were compared , photosynthetic rate reached peak in the morning , while transpiration rate reached peak in the afternoon .In the morning when relative humidity was high , water use efficiency increased through maximum CO2 assimilation .It favored the adaptation to drought stress .(3) Diurnal change laws of Fv / Fm were V-shaped .Under the drought stress , differences of treatments were big in the day .[ Ch , 2 fig .1 tab .12 ref .]
- plant physiology,
- plant ecology,
- drought stress,
- Sabina vulgaris,
- gas exchanges,
- chlorophyll fluorescence

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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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Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress

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

2. .School of Forestry , Inner Mongolia Agricultural University , Huhehot 010019 , Inner Mongolia , China

Funds:

国家自然科学基金资助项目(30240033);浙江林学院科学研究发展基金资助项目

Received Date: 2004-04-01

Rev Recd Date: 2004-06-22

Publish Date: 2004-12-20

Key words:

Abstract: To study the mechanism of drought resistance of Sabina vulgaris , three treatments (the penetration potentials of water cultures were 0.0 , -0.1 , -0.3 MPa respectively ) of control , weak drought stress , strong drought stress were set up in water culture system in greenhouse .The gas exchanges and chlorophyll fluorescence parameters of S .vulgaris were measured under drought stress .The results were as follows :(1) The photosynthesis , transpiration , stomatal conductance of S .vulgaris decreased 46 %, 52 %, 62 % and 24 %, 40 %, and 41 % respectively , while water use efficiency increased 55 %and 31 %under strong drought stress and weak drought stress . (2)When diurnal changing laws of rates of photosynthesis and transpiration were compared , photosynthetic rate reached peak in the morning , while transpiration rate reached peak in the afternoon .In the morning when relative humidity was high , water use efficiency increased through maximum CO2 assimilation .It favored the adaptation to drought stress .(3) Diurnal change laws of Fv / Fm were V-shaped .Under the drought stress , differences of treatments were big in the day .[ Ch , 2 fig .1 tab .12 ref .]

Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress

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通讯作者: 陈斌, bchen63@163.com

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Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress

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

2. .School of Forestry , Inner Mongolia Agricultural University , Huhehot 010019 , Inner Mongolia , China

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Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress

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Gas exchanges and chlorophyll fluorescence characteristics of Sabina vulgaris under drought stress

1. School of Life Sciences, Zhejiang Forestry College , Lin’an 311300, Zhejiang , China; 2. .School of Forestry , Inner Mongolia Agricultural University , Huhehot 010019 , Inner Mongolia , China

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

2. .School of Forestry , Inner Mongolia Agricultural University , Huhehot 010019 , Inner Mongolia , China