African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6849

Full Length Research Paper

Fruit morphological characteristics at different maturity stages of coconut (Cocos nucifera L.) improved hybrids (PB113+, PB121+) and their parent males (RIT+, WAT+)

Kouadio Marcellin Konan
  • Kouadio Marcellin Konan
  • Laboratory of Biocatalysis and Bioprocesses, Training and Research Unit in Food Science and Technology, Nangui Abrogoua University, 02 BP 801 Abidjan 02, Côte d'Ivoire.
  • Google Scholar
Konan Konan Jean Louis
  • Konan Konan Jean Louis
  • Marc Delorme Coconut Research Station Port-Bouët, Centre National de Recherche Agronomique (CNRA), 07 BP 13 Abidjan 07, Côte d’Ivoire.
  • Google Scholar
Doubi Bi Tra Serges
  • Doubi Bi Tra Serges
  • Marc Delorme Coconut Research Station Port-Bouët, Centre National de Recherche Agronomique (CNRA), 07 BP 13 Abidjan 07, Côte d’Ivoire.
  • Google Scholar
Soro Pégnonsienrè Lacina
  • Soro Pégnonsienrè Lacina
  • Department of Agriculture, Fisheries Resources and Agro-Industries, University of San Pedro, 01 BP 1800 San Pedro 01, Côte d’Ivoire.
  • Google Scholar
Djaha Konan Engueran
  • Djaha Konan Engueran
  • Marc Delorme Coconut Research Station Port-Bouët, Centre National de Recherche Agronomique (CNRA), 07 BP 13 Abidjan 07, Côte d’Ivoire.
  • Google Scholar
Koné Fankroma Martial Thierry
  • Koné Fankroma Martial Thierry
  • Laboratory of Biocatalysis and Bioprocesses, Training and Research Unit in Food Science and Technology, Nangui Abrogoua University, 02 BP 801 Abidjan 02, Côte d'Ivoire.
  • Google Scholar


  •  Received: 31 July 2023
  •  Accepted: 25 August 2023
  •  Published: 31 October 2023

Abstract

Cocos nucifera L. is an important coastal crop in Côte d'Ivoire, with 53 coconut cultivars. The present study was carried out to compare the morphophysical characteristics of C. nucifera L. fruit of the improved parents Rennell Island Tall (RIT+) and West Africa Tall (WAT+) and their hybrids PB113+ and PB121+, harvested at different maturity. The ANOVA results showed that cultivar and maturity had a significant effect (p < 0.05) on all morphological characteristics studied, except for sphericity, H2, H3, and H4 where maturity was not statistically significant (p ≥ 0.05). The morphological parameters of RIT+ coconuts were statistically different from those of WAT+, PB113+ and PB121+ (p < 0.05). The WAT+ coconuts had high kernel thickness. The hybrid PB121+ was more spherical than other fruits and had a higher shell thickness. Improved Rennell Island Tall as a parent had good kernel water mass and large shape, while the improved West Tall Africa had good kernel thickness. Concerning PB113+ and PB121+ hybrids, they were similar in dimensional parameters. However, PB121+ fruits had the highest mass and volume, kernel mass, and shell mass compared to PB113+. This study showed variabilities between the improved cultivars WAT+, RIT+ and the PB121+ and PB113+ hybrids.

Key words: Cocos nucifera L., fruit, cultivar, maturity morphological, Côte d’Ivoire, germplasm.