title: Silicon improves maize photosynthesis in saline-alkaline soils.
abstract: The research aimed to determine the effects of Si application on photosynthetic characteristics of maize on saline-alkaline soil, including photosynthetic rate (P n ), stomatal conductance (g s ), transpiration rate (E), and intercellular CO2 concentration (C i ) of maize in the field with five levels (0, 45, 90, 150, and 225 kg · ha(-1)) of Si supplying. Experimental results showed that the values of P n, g s, and C i of maize were significantly enhanced while the values of E of maize were dramatically decreased by certain doses of silicon fertilizers, which meant that Si application with proper doses significantly increased photosynthetic efficiency of maize in different growth stages under stressing environment of saline-alkaline soil. The optimal dose of Si application in this experiment was 150 kg · ha(-1) Si. It indicated that increase in maize photosynthesis under saline-alkaline stress took place by Si application with proper doses, which is helpful to improve growth and yield of maize.
authors: College of Life Sciences, Baicheng Normal University, Baicheng 137000, China ; Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
authors: Zhiming
authors: Z
authors: Xie
authors: College of Agronomy, Jilin Agricultural University, Changchun 130118, China.
authors: Ri
authors: R
authors: Song
authors: Key Laboratory of Coastal Biology & Bioresources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Yantai 264003, China.
authors: Hongbo
authors: H
authors: Shao
authors: Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
authors: Fengbin
authors: F
authors: Song
authors: School of Urban and Environmental Science, Huaiyin Normal University, Huai'an 223300, China.
authors: Hongwen
authors: H
authors: Xu
authors: School of Urban and Environmental Science, Huaiyin Normal University, Huai'an 223300, China.
authors: Yan
authors: Y
authors: Lu
mesh_terms: D004305:Dose-Response Relationship, Drug; D006863:Hydrogen-Ion Concentration; D010788:Photosynthesis / Q000187:drug effects*; D054046:Plant Stomata / Q000187:drug effects; D018526:Plant Transpiration / Q000187:drug effects; D012825:Silicon / Q000494:pharmacology*; D012987:Soil / Q000737:chemistry*; D003313:Zea mays / Q000187:drug effects* / Q000378:metabolism
chemical_list: D012987:Soil; D012825:Silicon
references: Curr Opin Biotechnol. 2012 Apr;23(2):209-14
references: 22244789
references: Trends Plant Sci. 2006 Aug;11(8):392-7
references: 16839801
references: J Plant Physiol. 2003 Oct;160(10):1157-64
references: 14610884
references: Mycorrhiza. 2009 Jun;19(5):329-35
references: 19104846
references: New Phytol. 2005 Sep;167(3):797-804
references: 16101916
references: J Exp Bot. 2012 Sep;63(15):5635-44
references: 22915747
references: J Photochem Photobiol B. 2014 Aug;137:107-15
references: 24508481
references: Plant Physiol Biochem. 2012 Aug;57:93-105
references: 22698752
references: PLoS One. 2013;8(5):e62100
references: 23717388
references: Annu Rev Plant Physiol Plant Mol Biol. 1999 Jun;50:641-664
references: 15012222
references: J Plant Physiol. 2011 Nov 15;168(17):2063-71
references: 21803445