title: [Effects of applying selenium on selenium allocation, grain yield, and grain quality of two maize cultivars].
abstract: A pot experiment with conventional maize cultivar ZD958 and glutinous maize cultivar JN218 was conducted to study the effects of applying different concentrations (0, 10, 25 and 50 mg x kg(-1)) of selenium (Se) on the Se allocation in plant organs, grain yield, and its quality. At low concentrations (< or = 10 mg x kg(-1)), Se stimulated maize growth, and increased biomass accumulation and grain yield significantly. At high concentrations (> 25 mg x kg(-1)), Se inhibited maize growth, and decreased dry mass accumulation, grain yield, and its quality. The Se concentration in plant organs was in the order of root > leaf > stalk > sheath. The Se concentrations in plant organs had a positive correlation with the Se concentration in soil. Comparing with ZD958, JN218 could accumulate more Se in natural low-Se environment, but enrich lesser Se in the environment with 10 mg x kg(-1) of Se. Taking the Se accumulation amount in grain and aboveground vegetative organs as the standard for evaluation, JN218 was more available planted on natural low-Se (0.25 mg x kg(-1)) soil or high-Se (25 mg x kg(-1)) soil, while ZD958 was appropriate planted on Se-rich (10 mg x kg(-1)) soil or Se-polluted (50 mg x kg(-1)) soil.
authors.affiliation: State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai' an 271018, Shandong, China. yubohao2004@sina.com
authors.forename: Yu-Bo
authors.initials: YB
authors.lastname: Hao
authors.forename: Hua-Lin
authors.initials: HL
authors.lastname: Liu
authors.forename: Xiao-Ke
authors.initials: XK
authors.lastname: Ci
authors.forename: Hong-Ming
authors.initials: HM
authors.lastname: An
authors.forename: Dong
authors.initials: D
authors.lastname: Shu-Ting
authors.forename: Ji-Wang
authors.initials: JW
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.forename: Bin
authors.initials: B
authors.lastname: Zhao
mesh_terms: D018533:Biomass; D002523:Edible Grain / Q000254:growth & development; D005308:Fertilizers; D012643:Selenium / Q000032:analysis / Q000378:metabolism*; D003313:Zea mays / Q000145:classification / Q000254:growth & development* / Q000378:metabolism*
chemical_list: D005308:Fertilizers; D012643:Selenium