African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

Evaluation of new papaya hybrids

Adriel Lima Nascimento
  • Adriel Lima Nascimento
  • Postgraduate Program in Genetics and Breeding, Department of Agronomy, Center of Exact Sciences and Engineering, Federal University of Espírito Santo, Alegre, Brazil.
  • Google Scholar
Alan de Lima Nascimento
  • Alan de Lima Nascimento
  • Federal Institute of Education, Science and Technology of Espírito Santo, Montanha Campus, Montanha, Brazil.
  • Google Scholar
Omar Schmildt
  • Omar Schmildt
  • Laboratory of Plant Breeding, Federal University of Espírito Santo, São Mateus, Brazil.
  • Google Scholar
Karina Tiemi Hassuda dos Santos
  • Karina Tiemi Hassuda dos Santos
  • Laboratory of Plant Breeding, Federal University of Espírito Santo, São Mateus, Brazil.
  • Google Scholar
Renan Garcia Malikouski
  • Renan Garcia Malikouski
  • Laboratory of Plant Breeding, Federal University of Espírito Santo, São Mateus, Brazil.
  • Google Scholar
Rodrigo Sobreira Alexandre
  • Rodrigo Sobreira Alexandre
  • Department of Forest and Wood Science, Center of Exact Sciences and Engineering, Federal University of Espírito Santo, Jerônimo Monteiro, Brazil.
  • Google Scholar
Laercio Francisco Cattaneo
  • Laercio Francisco Cattaneo
  • Integrated Faculties of Espírito Santo, Sooretama, Brazil.
  • Google Scholar
José Augusto Teixeira do Amaral
  • José Augusto Teixeira do Amaral
  • Postgraduate Program in Genetics and Breeding, Department of Agronomy, Center of Exact Sciences and Engineering, Federal University of Espírito Santo, Alegre, Brazil.
  • Google Scholar
Márcio Paulo Czepak
  • Márcio Paulo Czepak
  • Department of Agrarian and Biological Sciences, University Center North of Espírito Santo, Federal University of Espírito Santo, São Mateus. Brazil.
  • Google Scholar
Geraldo Antônio Ferreguetti
  • Geraldo Antônio Ferreguetti
  • Caliman Agrícola S.A., Linhares. Brazil.
  • Google Scholar
Edilson Romais Schmildt
  • Edilson Romais Schmildt
  • Laboratory of Plant Breeding, Federal University of Espírito Santo, São Mateus, Brazil.
  • Google Scholar


  •  Received: 03 April 2018
  •  Accepted: 16 May 2018
  •  Published: 21 June 2018

Abstract

To augment a narrow genetic base in papaya, this study aimed to evaluate the performance of new hybrids produced by Caliman Agrícola® S.A. The experiment was carried out in a randomized complete block design, with 12 treatments four replications and ten plants per plot. The treatments were the variety THB and the hybrids were CR1 × São Mateus, CR1 × 72/12, CR2 × São Mateus, CR3 × São Mateus, CR1 × Maradol, CR2 × Sekati, CR3 × Maradol, CR1 × UENF/Caliman 01, CR3 × Sekati, CR1 × SSAM and Baixinho (dwarf) × Pecíolo Curto (short petiole). Ten hermaphroditic plants per plot were evaluated at 8 and 12 months after transplanting. Data were recorded for sixteen characteristics related to morphology of plants and biometry of fruits harvested at maturity stage II (fruit with up to 25% yellow skin). The analysis of variance and the subsequent Scott-Knott’s mean clustering test showed significant differences between cultivars for all the characteristics. The characteristic soluble solids grouped the variety THB and five medium-sized hybrids with potential for exploitation: CP1 × UENF/Caliman 01, Baixinho × Pecíolo Curto, CP1 × 72/12, CP1 × SSAM, and CP1 × São Mateus. The estimated average yield of marketable fruits in 12 months grouped the two hybrids with the highest averages: CP3 × Sekati and CP2 × Sekati. The analysis of the new hybrids revealed interesting productivity and fruit quality characteristics, suggesting that they should undergo value for cultivation and use (VCU) testing for future release as commercial hybrids.

Key words: Carica papaya L., plant breeding, genetic variability.