%0 Journal Article
%T Classifica  o de popula  es de milho quanto 角 efici那ncia e resposta ao uso de f車sforo = Corn population classification as to efficiency and response to phosphorus use
%A Rodrigo Ribeiro Fidelis
%A Glauco Vieira Miranda
%A Jo那nes Mucci Pel迆zio
%A Joˋo Carlos Cardoso Galvˋo
%J Acta Scientiarum : Agronomy
%D 2010
%I 
%X O presente trabalho teve como objetivo selecionar os gen車tipos maiseficientes na absor  o e utiliza  o de f車sforo em solos de cerrado na safrinha. O ensaio foi constitu赤do de 47 tratamentos (gen車tipos) e foi conduzido na 芍rea experimental da Universidade Federal do Tocantins, Campus de Gurupi. Para simular ambientes com baixo e alto n赤vel de f車sforo, foram utilizadas doses de 25 e 113 kg ha-1 de P2O5 na semeadura, respectivamente. Para identificar os cultivares adequados aos ambientes, utilizou-se metodologia que sugerem a classifica  o das cultivares quanto 角 efici那ncia no uso e resposta a aplica  o do f車sforo (efici那ncia e resposta). Concluiu-se que osgen車tipos eficientes na absor  o e utiliza  o de f車sforo e responsivos ao incremento de P foram UFVM77-0331, UFVM77-0307, UFVM77-0333, UFVM77-0381, UFVM77-0313, UFVM77-0305, UFVM77-0377 e UFVM77-0345. This work aimed to select the most efficient genotypes in phosphorus absorption and utilization in cerrado soils during corn second crop. The essay was constituted of 47 treatments (genotypes) and conducted at the experimental area of the Universidade Federal do Tocantins, Gurupi Campus. In order to simulate environments with high and low levels of phosphorus, doses of 25 and 113 kg ha-1 of P2O5 were applied in the seeding, respectively. In order to identify the cultivars adequate to the environments, the study applied the methodology that suggest cultivar classification should be conducted according to use efficiency and response to phosphorus application (efficiency and response). It was concluded that the genotypesefficient in phosphorus absorption and utilization and responsive to P increase were UFVM77-0331, UFVM77-0307, UFVM77-0333, UFVM77-0381, UFVM77-0313, UFVM77-0305, UFVM77-0377 and UFVM77-0345.
%K Zea mays
%K estresse mineral
%K melhoramento
%K mineral stress
%K breeding
%U http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2632/2632