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

Diallel analysis in Citrullus mucosospermus (Fursa) for fruit traits

Kouakou Fulgence BROU
  • Kouakou Fulgence BROU
  • Université Nangui Abrogoua, laboratoire de Biologie et Amélioration des Productions Végétales. 02 BP 801 Abidjan 02, Côte d’Ivoire.
  • Google Scholar
Raoul Sylvère SIE
  • Raoul Sylvère SIE
  • Université Nangui Abrogoua, laboratoire de Biologie et Amélioration des Productions Végétales. 02 BP 801 Abidjan 02, Côte d’Ivoire.
  • Google Scholar
Koffi ADJOUMANI
  • Koffi ADJOUMANI
  • Ecole Normale Supérieure d’Abidjan Côte d’Ivoire.
  • Google Scholar
Yao Didier Martial SARAKA
  • Yao Didier Martial SARAKA
  • Université Peleforo Gon Coulibaly (UPGC), UFR Sciences Biologiques, Korhogo Côte d'Ivoire.
  • Google Scholar
Badie Arnaud KOUAGO
  • Badie Arnaud KOUAGO
  • Université Nangui Abrogoua, laboratoire de Biologie et Amélioration des Productions Végétales. 02 BP 801 Abidjan 02, Côte d’Ivoire.
  • Google Scholar
Cynthia Deborah ADAHI
  • Cynthia Deborah ADAHI
  • Université Nangui Abrogoua, laboratoire de Biologie et Amélioration des Productions Végétales. 02 BP 801 Abidjan 02, Côte d’Ivoire.
  • Google Scholar


  •  Received: 11 June 2018
  •  Accepted: 30 July 2018
  •  Published: 20 September 2018

Abstract

For the estimation of genetic parameters (such as heterosis effect, potence ratio, combining ability and reciprocal effects) of five fruit traits, in order to suggest breeding strategies in Citrullus mucosospermus (Fursa), a field trial was carried out at Kononfla city in Western Côte d’Ivoire using 4x4 full diallel. All 12 F1 hybrids and their parents were planted in a randomized complete block design with three replications. A positive heterosis effect relative to mid-parental values was observed to hybrids having one parent Bebu for characters’ fruit weight, fruit diameter and fruit volume. Variances due to general (GCA) and specific (SCA) combining abilities were significant (PË‚0.001) for all studied traits, indicating the involvement of both additive and non-additive gene actions in the inheritance of these traits. Non-additive gene effects were predominant for all studied traits. Bebu was the best general combiner for all traits except fruit number which the best combiners were three morphotypes of Wss. For NF, Wss1×Wss2 and Wss2×Wss3 recorded the highest positive SCA values. Crosses involving Bebu as one parent, presented the best SCA values for other traits. 

Key words: Bebu, Wlêwlê small seeds, heterosis, potence ratio, combining ability.

 

Abbreviation

GCA, general combining ability; SCA, Specific combining ability; B, Cultivar Bebu; das, Days after sowing; Wss, Wlêwlê small seeds; FM, Fruit maturity period; NF, Number of fruit per plant; FW, Fruit weight; FD, Fruit diameter; FV, Fruit volume.