Seleção de genótipos de alface eficientes na absorção do fósforo - DOI: 10.4025/actasciagron.v25i1.2348

Wallace Rudeck Sthel Cock; Flávio Dessaune Tardin; Antônio Teixeira do Amaral Júnior; Carlos Alberto Scapim; José Francisco Teixeira do Amaral; Gláucio de Mello Cunha; Ricardo Enrique Bressan-Smith; Ronald José Barth Pinto

doi:10.4025/actasciagron.v25i1.2348

Selection of lettuce genotypes for phosphorus uptaking efficiency - DOI: 10.4025/actasciagron.v25i1.2348

Wallace Rudeck Sthel Cock UENF
Flávio Dessaune Tardin UENF
Antônio Teixeira do Amaral Júnior UENF
Carlos Alberto Scapim UEM
José Francisco Teixeira do Amaral UFES
Gláucio de Mello Cunha UFES
Ricardo Enrique Bressan-Smith UENF
Ronald José Barth Pinto UEM

DOI: https://doi.org/10.4025/actasciagron.v25i1.2348

Abstract

Nineteen late flowering lettuce genotypes from the UENF horticultural germoplasm bank were evaluated for phosphorus utilization efficiency under a 10 mg.dm^-3 P level. A biometrical analysis of genetic parameters and genetic, phenotypic and environment correlations between shoot and root dry matter production, P content in roots and shoot Puptake, P-translocation and P utilization efficiency was undertaken. Genetic variability, which could be promising to obtain positive response to selection, was identified. Highest genotypic correlations were reported between root dry matter and P content in roots (0.90) and between leaf dry matter and P utilization efficiency above the soil level (0.86). These data and high genotypic determination coefficient suggest that selection of best materials may be done with material with highest leaf dry matter weight.

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Author Biography

Wallace Rudeck Sthel Cock, UENF

Possui graduação em Engenharia Agronômica pela Universidade Federal do Espírito Santo (1989) e mestrado em Produção Vegetal pela Universidade Estadual do Norte Fluminense Darcy Ribeiro (2000) . Atualmente é Técnico de Nível Superior-Agrônomo do Fundação Estadual do Norte Fluminense. Atuando principalmente nos seguintes temas: Fósforo, Alface, análise multivariada, variáveis canônicas, eficiência nutricional Currículo Lattes

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Published

2008-04-23

How to Cite

Cock, W. R. S., Tardin, F. D., Amaral Júnior, A. T. do, Scapim, C. A., Amaral, J. F. T. do, Cunha, G. de M., Bressan-Smith, R. E., & Pinto, R. J. B. (2008). Selection of lettuce genotypes for phosphorus uptaking efficiency - DOI: 10.4025/actasciagron.v25i1.2348. Acta Scientiarum. Agronomy, 25(1), 59-64. https://doi.org/10.4025/actasciagron.v25i1.2348

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Issue

Vol 25 No 1 (2003)

Section

Agronomy

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