African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of São Paulo, Brazil

Wallace de Sousa Leite
  • Wallace de Sousa Leite
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Sandra Helena Uneda-Trevisoli
  • Sandra Helena Uneda-Trevisoli
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Eder Licieri Groli
  • Eder Licieri Groli
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Cleber Vinicius Giaretta Azevedo
  • Cleber Vinicius Giaretta Azevedo
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Bruno Henrique Pedroso Val
  • Bruno Henrique Pedroso Val
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Eduardo Henrique Bizari
  • Eduardo Henrique Bizari
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Fabiana Mota da Silva
  • Fabiana Mota da Silva
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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Antonio Orlando Di Mauro
  • Antonio Orlando Di Mauro
  • Department of Crop Production, São Paulo State University “Júlio Mesquita Filho”, FCAV/UNESP, Via Prof. Paulo Donato Castellani, s/n, ZIP 14884-900, Jaboticabal - SP, Brazil.
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  •  Received: 12 September 2016
  •  Accepted: 05 October 2016
  •  Published: 10 November 2016

Abstract

The aim of this study was to compare the agronomic performance of RR soybean genotypes with conventional soybean genotypes derived from two-way crosses and evaluate through path analysis the influence of important traits for culture on the grain yield (GY) in the Northwestern of São Paulo, Brazil. It was used the randomized block design with three replications. Among the analyzed RR genotypes, three genotypes has high GY, with average values over 4575.5 kg ha-1, while among the conventional, ten genotypes, and the check Conquista showed superiority for GY, with average values over 3511.4 Kg ha-1. In general, the most productive RR soybean genotypes showed higher values when compared with conventional genotypes with higher yield. However, conventional soybean showed a higher number of superior genotypes with similar behavior when compared to the RR soybean. For the group of RR soybean genotypes, all agronomic traits, except one hundred seed weight (HSW), correlated positively with GY. For the group of conventional soybean genotypes, there was no significant correlation between GY and all agronomic traits analyzed. The genotypic correlation and path analysis indicate the plant height at flowering (PHF) and plant height at maturity (PHM) as the most favorable and direct effect on GY.

 

Key words: Glycine max, breeding, genetic correlations, productive performance, direct effect, RR soybeans.