Water potential and transpiration with decreasing soil moisture in <EM>Photinia frasery</EM> potted seedlings

YANG Jing; WANG Hua-tian; SONG Cheng-dong; ZHANG Pei-fa; WANG Ying; TAN Xiu-mei; DONG Yu-feng

Volume 25 Issue 5

Oct. 2008

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Article Navigation > Journal of Zhejiang A&F University > 2008 > 25(5): 670-674

YANG Jing, WANG Hua-tian, SONG Cheng-dong, ZHANG Pei-fa, WANG Ying, TAN Xiu-mei, DONG Yu-feng. Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings[J]. Journal of Zhejiang A&F University, 2008, 25(5): 670-674.

Citation:

YANG Jing, WANG Hua-tian, SONG Cheng-dong, ZHANG Pei-fa, WANG Ying, TAN Xiu-mei, DONG Yu-feng. Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings[J]. Journal of Zhejiang A&F University, 2008, 25(5): 670-674.

Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings

1.
Forestry College，Shandong Agricultural University，Taian 271018，Shandong，China;
2.
Taishan Forestry Academy of Taian City，Taian 271000，Shandong，China

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Corresponding author: WANG Hua-tian
Publish Date: 2008-10-20

Abstract

Diurnal soil and leaf water potential as well as transpiration rate of 2-year-old potted seedlings of Photinia frasery were studied with decreasing soil moisture conditions during the testing period. Also，a correlation analysis between the transpiration rate of the soil versus leaf water potential was conducted. Results indicated that the change of daily soil and leaf water potential was a‘V’shape with daily fluctuation range increasing as drought stress rose during the testing period. As soil water potential decreased over the experimental period，the daily mean transpiration rate decreased with daily fluctuation range decreasing and the transpiration peak occurring sooner. The correlation analysis showed that the correlation between transpiration rate and soil water potential was extremely significant（r = 0.804，P＜0.01），while that of transpiration rate and leaf water potential was significant（r = 0.566，P＜ 0.05）.［Ch，3 fig. 1 tab. 19 ref.］
- botany,
- Photinia frasery,
- transpiration rate,
- water potential

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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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Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings

1. Forestry College，Shandong Agricultural University，Taian 271018，Shandong，China;

2. Taishan Forestry Academy of Taian City，Taian 271000，Shandong，China

Corresponding author: WANG Hua-tian

Publish Date: 2008-10-20

Key words:

Abstract: Diurnal soil and leaf water potential as well as transpiration rate of 2-year-old potted seedlings of Photinia frasery were studied with decreasing soil moisture conditions during the testing period. Also，a correlation analysis between the transpiration rate of the soil versus leaf water potential was conducted. Results indicated that the change of daily soil and leaf water potential was a‘V’shape with daily fluctuation range increasing as drought stress rose during the testing period. As soil water potential decreased over the experimental period，the daily mean transpiration rate decreased with daily fluctuation range decreasing and the transpiration peak occurring sooner. The correlation analysis showed that the correlation between transpiration rate and soil water potential was extremely significant（r = 0.804，P＜0.01），while that of transpiration rate and leaf water potential was significant（r = 0.566，P＜ 0.05）.［Ch，3 fig. 1 tab. 19 ref.］

Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings

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通讯作者: 陈斌, bchen63@163.com

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Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings

1. Forestry College，Shandong Agricultural University，Taian 271018，Shandong，China;

2. Taishan Forestry Academy of Taian City，Taian 271000，Shandong，China

Corresponding author: WANG Hua-tian

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Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings

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通讯作者: 陈斌, bchen63@163.com

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Water potential and transpiration with decreasing soil moisture in Photinia frasery potted seedlings

1. Forestry College，Shandong Agricultural University，Taian 271018，Shandong，China; 2. Taishan Forestry Academy of Taian City，Taian 271000，Shandong，China

Corresponding author: WANG Hua-tian

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1. Forestry College，Shandong Agricultural University，Taian 271018，Shandong，China;

2. Taishan Forestry Academy of Taian City，Taian 271000，Shandong，China