title: Combined effect of iron and zinc on micronutrient levels in wheat (Triticum aestivum L.).
abstract: A nutrient solution experiment was conducted to investigate the effect of Fe and Zn supply on Fe, Zn, Cu, and Mn concentrations in wheat plants. The experiment used a factorial combination of two Fe levels (0 and 5 mg l(-1)) and three Zn levels (0, 0.1 and 10 mg I(-1)). The supply of Fe (5 mg l(-1)) and Zn (0.1 mg l(-1)) increased plant dry weight and leaf chlorophyll content compared to the Fe or Zn deficient (0 mg 11) treatments. However, excess Zn supply (10 mg l(-1)) reduced plant dry weights and leaf chlorophyll content. Iron supply (5 mg l(-1)) reduced wheat Zn concentrations by 49%, Cu concentrations by 34%, and Mn by 56% respectively. Zinc supply (10 mg l(-1)) reduced wheat Fe concentrations by an average of 8%, but had no significant effect on Cu and Mn concentrations. Stepwise regression analyses indicated that Zn, Cu, and Mn concentrations were negatively correlated with root- and leaf-Fe concentrations, but positively correlated with stem-Fe concentrations. Leaf-Mn concentrations were negatively correlated with root-, stem- and leaf-Zn concentrations.
authors: College of Resources and Environment, Northwest A and F University, Yangling, Shaanxi - 712100, China.
authors: Ai-Qing
authors: AQ
authors: Zhao
authors: Qiong-Li
authors: QL
authors: Bao
authors: Xiao-Hong
authors: XH
authors: Tian
authors: Xin-Chun
authors: XC
authors: Lu
authors: Jeff Gale
authors: JG
authors: William
mesh_terms: D007501:Iron / Q000008:administration & dosage*; D013054:Spectrophotometry, Atomic; D014908:Triticum / Q000378:metabolism*; D015032:Zinc / Q000008:administration & dosage*
chemical_list: D007501:Iron; D015032:Zinc