Physiological response from different provenances of Pinus massoniana seedlings to water stress

YUAN Xiao-feng; SHI Ji-yan; DING Gui-jie

Volume 25 Issue 1

Jun. 2018

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YUAN Xiao-feng, SHI Ji-yan, DING Gui-jie. Physiological response from different provenances of Pinus massoniana seedlings to water stress[J]. Journal of Zhejiang A&F University, 2008, 25(1): 42-47.

Citation:

YUAN Xiao-feng, SHI Ji-yan, DING Gui-jie. Physiological response from different provenances of Pinus massoniana seedlings to water stress[J]. Journal of Zhejiang A&F University, 2008, 25(1): 42-47.

Physiological response from different provenances of Pinus massoniana seedlings to water stress

1.
Life Science College, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China;
2.
College of Environmental and Resource Science, Zhejiang University, Hangzhou 310029, Zhejiang, China;
3.
Forestry College, Guizhou University, Guiyang 550025, Guizhou, China

Received Date: 2007-03-28
Rev Recd Date: 2007-06-06
Publish Date: 2008-02-10

Abstract

The objective of this study was to determine the physiological response from three different provenances(Xinyi of Guangdong Province, Chun'an of Zhejiang Province and Duyun of Guizhou Province) of masson pine (Pinus massoniana) to water stress. Water stress on masson pine seedlings from three provenances was applied using concentrations of 0(control), 100, 200, and 300 g·L-1 polyethylene glycol(PEG6000) for determining the concentrations of soluble sugar, peroxidase activity(POD) and nitrate reductase(NR) activity; and 0(control), 150, 250, 350 g·L-1 PEG 6000 for determining chlorophyll content and membrane permeability. As water stress increased from 0 to 250 g·L-1 PEG, chlorophyll content from each provenance decreased(Xinyi-17.51%,Chun'an-17.69%, and Duyun-14.98%). When treated with 350 g·L-1 PEG, the decrease compared to the control was:Chun'an, 27.27%; Xinyi, 25.70%; and Duyun, 18.21%. As PEG concentration went from 250 to 350 g·L-1, membrane permeability increased obviously. POD increased first and then decreased with the increasing of PEG concentration. When treated with 300 g·L-1 PEG, POD decreased compared to the control with Xinyi decreasing 43.90%, Chun'an 23.99%, and Duyun 27.06%. Compared to no water stress, with 200 g·L-1 PEG, soluble sugar increased for Chun'an(42.78%) and Xinyi(19.49%), while at 300 g·L-1 PEG Chun'an increased 49.01% and Xinyi 37.15%. Also, NR activity decreased with small changes for the Duyuan source but relatively large changes for the Xinyi source. This study showed that drought tolerance in Duyun and Chun'an was stronger than the Xinyi provenance.
- botany,
- masson pine(Pinus massoniana),
- provenance,
- water stress,
- physiological response

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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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Physiological response from different provenances of Pinus massoniana seedlings to water stress

1. Life Science College, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China;

2. College of Environmental and Resource Science, Zhejiang University, Hangzhou 310029, Zhejiang, China;

3. Forestry College, Guizhou University, Guiyang 550025, Guizhou, China

Received Date: 2007-03-28

Rev Recd Date: 2007-06-06

Publish Date: 2008-02-10

Key words:

Abstract: The objective of this study was to determine the physiological response from three different provenances(Xinyi of Guangdong Province, Chun'an of Zhejiang Province and Duyun of Guizhou Province) of masson pine (Pinus massoniana) to water stress. Water stress on masson pine seedlings from three provenances was applied using concentrations of 0(control), 100, 200, and 300 g·L-1 polyethylene glycol(PEG6000) for determining the concentrations of soluble sugar, peroxidase activity(POD) and nitrate reductase(NR) activity; and 0(control), 150, 250, 350 g·L-1 PEG 6000 for determining chlorophyll content and membrane permeability. As water stress increased from 0 to 250 g·L-1 PEG, chlorophyll content from each provenance decreased(Xinyi-17.51%,Chun'an-17.69%, and Duyun-14.98%). When treated with 350 g·L-1 PEG, the decrease compared to the control was:Chun'an, 27.27%; Xinyi, 25.70%; and Duyun, 18.21%. As PEG concentration went from 250 to 350 g·L-1, membrane permeability increased obviously. POD increased first and then decreased with the increasing of PEG concentration. When treated with 300 g·L-1 PEG, POD decreased compared to the control with Xinyi decreasing 43.90%, Chun'an 23.99%, and Duyun 27.06%. Compared to no water stress, with 200 g·L-1 PEG, soluble sugar increased for Chun'an(42.78%) and Xinyi(19.49%), while at 300 g·L-1 PEG Chun'an increased 49.01% and Xinyi 37.15%. Also, NR activity decreased with small changes for the Duyuan source but relatively large changes for the Xinyi source. This study showed that drought tolerance in Duyun and Chun'an was stronger than the Xinyi provenance.

Physiological response from different provenances of Pinus massoniana seedlings to water stress

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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