Análise genética de médias e variâncias da expressão da tolerância ao alumínio em milho

Alberto José Prioli; Carlos Alberto Scapim; Rejane Mara Prati; Sonia Maria Alves Pinto Prioli; Juliana Pereira Bravo; Andrea Akemi Hoshino; Talge Aiex Boni; Roxele Ethienne Ferreira Munhoz

doi:10.4025/actasciagron.v22i0.2815

Genetic analysis of means and variances of aluminum tolerance in maize

Authors

Alberto José Prioli UEM Author
Carlos Alberto Scapim UEM Author
Rejane Mara Prati UEM Author
Sonia Maria Alves Pinto Prioli UEM Author
Juliana Pereira Bravo UEM Author
Andrea Akemi Hoshino UEM Author
Talge Aiex Boni UEM Author
Roxele Ethienne Ferreira Munhoz UEM Author

DOI:

https://doi.org/10.4025/actasciagron.v22i0.2815

Keywords:

milho, tolerância ao alumínio, herança da tolerância

Abstract

In acid soils, aluminum constraints productivity of nonadapted plants. Aluminum most evident phytotoxic effect is the decrease in root growth. Joint use of liming and tolerant genotypes would make good use of acid soils. However, there are conflicting results from studies on tolerance inheritance in maize (Zea mays L.). The aim of this research was to estimate genetic parameters of tolerance in a family of tolerant and nontolerant inbred lines and their derived generations F₁ and F₂ and backcrosses. Net length of seminal roots of seedlings, developed in a nutrient solution with 4.5 mg/L aluminum, was analyzed. Additive and dominant standard proved sufficient and showed the additive gene effect as the chief generating factor of variability. Narrow-sense heritability was close to one and the number of loci was estimated as between two and three. Quick gains in selection cycles may be foreseen for net length of seminal roots

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Author Biography

Alberto José Prioli, UEM

possui graduação em História Natural pela Faculdade de Filosofia Ciências e Letras de São José do Rio Preto (1974), mestrado em Genética e Melhoramento pela Universidade Federal de Viçosa (1980) e doutorado em Biologia Vegetal pela Universidade Estadual de Campinas (1987). Atualmente é professor associado C da Universidade Estadual de Maringá. Tem experiência na área de Genética, com ênfase em Polimorfismo Molecular Em Populações Naturais, atuando principalmente nos seguintes temas: peixes, planície de inundação do alto rio paraná e marcadores moleculares Currículo Lattes

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Published

2008-05-08

Issue

Vol. 22 (2000)

Section

Agronomy

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How to Cite

Genetic analysis of means and variances of aluminum tolerance in maize. (2008). Acta Scientiarum. Agronomy, 22, 869-875. https://doi.org/10.4025/actasciagron.v22i0.2815