A Diagnostic Experiment and Study of the Influence of O<sub>3</sub> on Pakchoi

Bai Yueming; Wang Chunyi; Liu Ling; Guo Jianping; Wen Min

Vol.13, NO.3, 2002

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2002 > 13(3): 364-370

Bai Yueming, Wang Chunyi, Liu Ling, et al. A diagnostic experiment and study of the influence of O3 on pakchoi. J Appl Meteor Sci, 2002, 13(3): 364-370.

Citation:

Bai Yueming, Wang Chunyi, Liu Ling, et al. A diagnostic experiment and study of the influence of O₃ on pakchoi. J Appl Meteor Sci, 2002, 13(3): 364-370.

Bai Yueming, Wang Chunyi, Liu Ling, et al. A diagnostic experiment and study of the influence of O3 on pakchoi. J Appl Meteor Sci, 2002, 13(3): 364-370.

Citation:

Bai Yueming, Wang Chunyi, Liu Ling, et al. A diagnostic experiment and study of the influence of O₃ on pakchoi. J Appl Meteor Sci, 2002, 13(3): 364-370.

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A Diagnostic Experiment and Study of the Influence of O₃ on Pakchoi

Chinese Academy of Meteorological Sciences, Beijing 100081

Received Date: 2001-03-07
Rev Recd Date: 2001-09-17
Publish Date: 2002-06-30

Abstract

Abstract

A long time experiment on pakchoi in five O₃ concentration treatments is made by using the OTC-1 open top chamber. The results show that lower O₃ concentrations (25×10 ^{^–9} ~ 40×10 ^–9 and 50×10 ^–9) have chronic injury to pakchoi. When O₃ concentration is up to 100×10 ^–9 or 200×10 ^–9, green pakchoi leaves faded and lost water. Increasing O₃ content in ambient air may lead to shorter plant height and smaller plant pattern as well as the decreased leaf number, leaf area, photosynthesis rate, biological yield and economy yield. In addition, the experiment shows that pakchoi mesophyll and epidermis was influenced first when pakchoi in normal growing condition moved into the chamber with the O₃ concentration being 100×10 ^–9 or 200×10 ^–9, but the veins of new leaves in the clamber twised and changed form first .
- Ozone concentration;
- Pakchoi yield;
- Open-top Chamber

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References(15)

Figures and Tables

图 1 油菜各功能叶的光合速率变化曲线

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图 2 不同O₃ 浓度对油菜生物产量的影响曲线

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表 1 油菜叶片个体和群体受害程度的等级划分

表 2 不同O₃ 浓度下油菜的伤害情况

表 3 O₃ 浓度增加对株高的影响

表 4 不同O₃ 浓度对油菜单株叶面积的影响

表 5 O₃ 浓度增加对油菜光合速率的影响

表 6 O₃ 浓度增加对油菜经济产量的影响

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