title: Effects of ozone on growth, yield and leaf gas exchange rates of two Bangladeshi cultivars of wheat (Triticum aestivum L.).
abstract: 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.
authors: United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
authors: Nahid
authors: N
authors: Akhtar
authors: Masahiro
authors: M
authors: Yamaguchi
authors: Hidetoshi
authors: H
authors: Inada
authors: Daiki
authors: D
authors: Hoshino
authors: Taisuke
authors: T
authors: Kondo
authors: Takeshi
authors: T
authors: Izuta
mesh_terms: D001459:Bangladesh; D018533:Biomass; D005740:Gases / Q000378:metabolism*; D010126:Ozone / Q000494:pharmacology*; D010788:Photosynthesis / Q000187:drug effects; D018515:Plant Leaves / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D014908:Triticum / Q000187:drug effects* / Q000254:growth & development* / Q000378:metabolism
chemical_list: D005740:Gases; D010126:Ozone