Effects of ozone on growth, yield and leaf gas exchange rates of two Bangladeshi cultivars of wheat (Triticum aestivum L.)

被引：29

作者：

Akhtar, Nahid ^{[2
]}

Yamaguchi, Masahiro ^{[1
]}

Inada, Hidetoshi ^{[1
]}

Hoshino, Daiki ^{[1
]}

Kondo, Taisuke ^{[1
]}

Izuta, Takeshi ^{[1
]}

机构：

[1] Tokyo Univ Agr & Technol, Inst Symbiot Sci & Technol, Fuchu, Tokyo 1838509, Japan

[2] Tokyo Univ Agr & Technol, United Grad Sch Agr Sci, Fuchu, Tokyo 1838509, Japan

来源：

ENVIRONMENTAL POLLUTION | 2010年 / 158卷 / 05期

关键词：

Growth; Yield; Leaf gas exchange rates; Ozone; Wheat; CHLOROPHYLL-A FLUORESCENCE; AIR-POLLUTION; ELEVATED OZONE; PHOTOSYNTHESIS; AGRICULTURE; EXPOSURE; IMPACTS; RESPONSES; NITROGEN; BIOMASS;

D O I：

10.1016/j.envpol.2009.11.011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To clarify the effects of O-3 on crop plants cultivated in Bangladesh, two Bangladeshi wheat cultivars (Sufi and Bijoy) were grown in plastic boxes filled with Andisol and exposed daily to charcoal-filtered air or O-3 at 60 and 100 nl l(-1) (10:00-17:00) from 13 March to 4 June 2008. The whole-plant dry mass and grain yield per plant of the two cultivars at the final harvest were significantly reduced by the exposure to O-3. Although there was no significant effect of O-3 on stomatal diffusive conductance to H2O of flag leaf, net photosynthetic rate of the leaf was significantly reduced by the exposure to O-3. The sensitivity of growth, yield, yield components and leaf gas exchange rates to O-3 was not significantly different between the two cultivars. The results obtained in the present study suggest that ambient levels of O-3 may detrimentally affect wheat production in Bangladesh. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1763 / 1767

页数：5

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