African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Partial diallel analysis among maize lines for characteristics related to the tassel and the productivity

Maicon Nardino
  • Maicon Nardino
  • Plant Breeding by Universidade Federal de Pelotas, Brazil.
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Velci Queiróz de Souza
  • Velci Queiróz de Souza
  • Universidade Federal de Santa Maria, Campus de Frederico Westphalen, Brazil.
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Diego Baretta
  • Diego Baretta
  • Plant Breeding by Universidade Federal de Pelotas, Brazil.
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Valmor Antonio Konflanz
  • Valmor Antonio Konflanz
  • Research KSP Seeds in the Pato Branco Paraná, Brazil.
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Diego Nicolau Follmann
  • Diego Nicolau Follmann
  • Federal University of Santa Maria. Brazil.
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Ivan Ricardo Carvalho
  • Ivan Ricardo Carvalho
  • Plant Breeding by Universidade Federal de Pelotas, Brazil.
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Mauricio Ferrari
  • Mauricio Ferrari
  • Plant Breeding by Universidade Federal de Pelotas, Brazil.
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Braulio Otomar Caron
  • Braulio Otomar Caron
  • Universidade Federal de Santa Maria, Campus de Frederico Westphalen, Brazil.
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Denise Schmidt
  • Denise Schmidt
  • Universidade Federal de Santa Maria, Campus de Frederico Westphalen, Brazil.
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  •  Received: 18 August 2015
  •  Accepted: 17 February 2016
  •  Published: 17 March 2016

Abstract

Diallel crosses are important to the prediction of the best combinations among different heterotic groups of maize lines. The work objective was to estimate the combining ability among inbred lines from two heterotic groups to predict the best combinations in traits related to tassel and grain yield, conducted in five environments in the southern region. The inbred lines of the two heterotic groups are from the company KSP seeds. The tests were conducted based on crosses with partial diallel, using 15 female parents and male parents 8, 2011/2012 agricultural harvest in five environments in randomized blocks design with three replications. The variables analyzed were tassel length (TL), distance from the last node to the first branch of the tassel (DLN), distance from the flag leaf to the first branch of the tassel (DFL), number of tassel branches (NB), mass thousand grains (MTG) and grains yield (GY). The data were submitted the individual and joint variance analysis, after were realized analyze partial diallel analysis. The additive effects were more important for group II, already to the group I the non-additive effects were more pronounced, for the traits tassel and of yield. The GCA (group I) of lines inbred 15; 4 and 3-4 (group II) are favorable for increasing the grains yield. The crosses promising tassel traits been: 1-3, 2-4, 3-3, 4-4, 7-3, 8-3, 9-3, 10-3, 10-4, 11-4, 12-4, 14-3 and 15-4. The crosses promising increasing of grains yield been: 1-1, 1-4, 2-3, 3-1, 3-4, 4-3, 4-6, 4-7, 5-3, 5-4, 6-3, 6-4, 7-4, 8-4, 9-4, 10-5, 11-3, 12-3, 14-4, 15-2, 15-5 e 15-8.

Key words: Combinatorial capacity, genic effect, diallel crosses, grain yield.