Maíz (Zea mays ssp. Mays) arqueológico del Pucará de Tilcara, Jujuy, Argentina

p.99-108

Efectividad de la evaluación de polen en el campo para determinar androesterilidad en maíz (Zea mays ssp. mays)

p.213-220

Caracterización y evaluación de una forma de maíz (Zea mays ssp. mays) reventón

p.51-58

Variability in water and nitrogen availability at plot scale and its effect on Maize (Zea Mays L.) production

p.21-30

Arsenate, arsenite and dimethyl arsinic acid (DMA) uptake and tolerance in maize (Zea mays L.)

The influx of arsenate, arsenite and dimethyl arsinic acid (DMA) were studied in 7-day-old excised maize roots (Zea mays L.), and then related to arsenate, arsenite and DMA toxicity. Arsenate, arsenite and DMA influx was all found concentration dependent with significant genotypic differences for arsenite and DMA. Arsenate influx in phosphate starved plants best fitted the four-parameter Michaelis-Menten model corresponding to an additive high and low affinity uptake system, while the uptake of phosphate replete plants followed the two parameter model of Michaelis-Menten kinetics. Arsenite influx was well described by the two parameter model of 'Michaelis-Menten' kinetics. DMA influx was comprised of linear phase and a hyperbolic phase. DMA influx was much lower than that for arsenite and arsenate. Arsenate and DMA influx decreased when phosphate was given as a pre-treatment as opposed to phosphate starved plants. The +P treatment tended to decrease influx by 50% for arsenate while this figure was 90% for DMA. Arsenite influx increasing slightly at higher arsenite concentrations in P starved plants but at lower arsenite concentrations, there was little or no difference in arsenite uptake. Low toxicity was found for DMA on maize compared with arsenate and arsenite and the relative toxicity of arsenic species was As(V) > As(III) >> DMA. © 2008 Springer Science+Business Media B.V.

Avaliação do aproveitamento da palha do milho (Zea mays L.) para bioenergia, nos sistemas de produção do Vale do Tejo

Dissertação de mestrado em Agricultura Sustentável, apresentada na Escola Superior Agrária de Santarém, Instituto Politécnico de Santarém.

Fertilización nitrogenada y fosfórica de maíz criollo (Zea mays) variedad blanco olote colorado en riego y riego limitado, verano 1984,ejido San Rafael, Linares, N. L.

Tesis (Maestría en Ciencias en Producción Agrícola) UANL