African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6688

Full Length Research Paper

Evaluation of physical and physiological characteristics of seeds and seedlings of physic nut genotypes

Franco William Novaes Dourado
  • Franco William Novaes Dourado
  • Programa de Pós-graduação em Agronomia, Universidade Estadual do Sudoeste da Bahia, Universidade Estadual do Sudoeste da Bahia, Estrada do Bem Querer, Km 04, Bairro Universitário, CEP: 45.083-900, Caixa Postal: 95, Vitória da Conquista, BA, Brasil.
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Arlete da Silva Bandeira*
  • Arlete da Silva Bandeira*
  • Programa de Pós-graduação em Agronomia, Universidade Estadual do Sudoeste da Bahia, Universidade Estadual do Sudoeste da Bahia, Estrada do Bem Querer, Km 04, Bairro Universitário, CEP: 45.083-900, Caixa Postal: 95, Vitória da Conquista, BA, Brasil.
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Everardes Públio Júnior
  • Everardes Públio Júnior
  • Programa de Pós-graduação em Agronomia, Universidade Estadual do Sudoeste da Bahia, Universidade Estadual do Sudoeste da Bahia, Estrada do Bem Querer, Km 04, Bairro Universitário, CEP: 45.083-900, Caixa Postal: 95, Vitória da Conquista, BA, Brasil.
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Manoel Xavier de Oliveira Junior
  • Manoel Xavier de Oliveira Junior
  • Campus Confresa, Instituto Federal de Mato Grosso, Rua Vilmar Fernandes, nº 300, Setor Santa Luzia, CEP: 78.652-000, Confresa, MT, Brasil.
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Otoniel Magalhães Morais
  • Otoniel Magalhães Morais
  • Departamento de Fitotecnia e Zootecnia, Universidade Estadual do Sudoeste da Bahia, Estrada do Bem Querer, Km 04, Bairro Universitário, CEP: 45.083-900, Caixa Postal: 95, Vitória da Conquista, BA, Brasil.
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  •  Received: 20 February 2014
  •  Accepted: 07 January 2015
  •  Published: 22 January 2015

Abstract

The physic nut is an oleaginous plant that has distinguished itself as a drought tolerant native species, with a view to producing raw material for the biodiesel production. The purpose of the study reported here was to evaluate the quality of seeds and seedlings of five physic nut genotypes. The evaluated characteristics were: humidity content, mass of 1000 seeds, seed dimensions (using caliper gauge and sieves), germination tests, vigor tests (the first count of the germination test, electrical conductivity, accelerated ageing, seedling dry mass and length, emergence, emergence speed index and analysis of emerged seedlings). The experimental design was a completely randomized block with 4 replications. All data were submitted to analysis of variance by F test and the means were compared by the Tukey test at 5% probability. The physiological quality was not influenced by the seeds dimensions. The tests of accelerated ageing, emergence percentage, shoot dry mass, seedling length and dry mass were the bests at differentiating the genotypes. The Paraguaçu genotype presented characteristics that were superior in relation to the others in the evaluations of accelerated ageing, root length and seedling total length.

 

Key words: Jatropha curcas, germination, vigor, viability, seed size.