United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
Environ Pollut. 2010 May;158(5):1763-7. doi: 10.1016/j.envpol.2009.11.011. Epub 2009 Dec 3.
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 H(2)O 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.
为了阐明 O(3) 对孟加拉国种植的作物的影响，将两种孟加拉国小麦品种（Sufi 和 Bijoy）种植在装满壤土的塑料盒中，并每天暴露在经过活性炭过滤的空气中或 60 和 100 nl l(-1) (10:00-17:00) 的 O(3)下，从 2008 年 3 月 13 日到 6 月 4 日。在最后一次收获时，两种品种的整株干质量和每株的籽粒产量均因暴露于 O(3)而显著降低。尽管 O(3)对旗叶的水蒸气扩散导度没有显著影响，但叶片的净光合速率因暴露于 O(3)而显著降低。生长、产量、产量构成和叶片气体交换率对 O(3)的敏感性在两个品种之间没有显著差异。本研究的结果表明，环境水平的 O(3)可能会对孟加拉国的小麦生产产生不利影响。
