Journal of Horticulture and Forestry
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Article Number - FC037CC65866


Vol.9(9), pp. 80-90 , September 2017
https://doi.org/10.5897/JHF2017.0502
ISSN: 2006-9782


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Full Length Research Paper

Vegetative propagation of selected clones of cocoa (Theobroma cacao L.) by stem cuttings



Essola Essola Emmanuel Junior
  • Essola Essola Emmanuel Junior
  • Department of Agriculture, Animal Husbandry and Derived Products, The Higher Institute of the Sahel, University of Maroua, P. O. Box 46 Maroua, Cameroon.
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Caspa Roseline Gusua
  • Caspa Roseline Gusua
  • Institute of Agricultural Research for Development (IRAD), Forest and Wood Program, P. O. Box 2123 Yaounde, Cameroon.
  • Google Scholar
Tchatchoua Dorothy Tchapda
  • Tchatchoua Dorothy Tchapda
  • Department of Agriculture, Animal Husbandry and Derived Products, The Higher Institute of the Sahel, University of Maroua, P. O. Box 46 Maroua, Cameroon.
  • Google Scholar
Owona Ndongo Pierre Andre
  • Owona Ndongo Pierre Andre
  • Institute of Agricultural Research for Development (IRAD), Nkoemvone, P. O. Box 65 Ebolowa, South Region, Cameroon.
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 Received: 01 August 2017  Accepted: 23 August 2017  Published: 30 September 2017

Copyright © 2017 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


The government of Cameroon is responsible for distributing hybrid cocoa seeds to farmers in Cameroon. These high-yielding and pod rot-resistant hybrids are obtained from self-incompatible commercial clones used for seed production by manual pollination of freshly opened flowers. The experimental procedure for the propagation technique of these clones has never been reported. The objectives of this study are to assess the effect of clone, cutting source and growth regulator concentration on the growth and rooting of cocoa (Theobroma cacao L.) stem cuttings. The experiment consisted of 4 clones (SNK16, ICS40, UPA143 and T79/501; two cutting sources: B1 = orthotropic and B2 = Plagiotropic) and four concentrations of growth regulator (4-indol-3-butyric acid) concentrations (D0 = 0 mg, D1 = 12.5 mg, D2 = 25 mg and D3 = 37.5 mg), thus a 4 × 2 × 4 factorial experiment in a completely randomized block design with 3 replicates was designed. Cuttings were set and monitored weekly for shoot sprouting for 10 weeks and rooting at the 10th week. The following parameters were measured: survival rate, number of cuttings with shoots, number of produced shoots, leaves length, number and length of produced roots. Clone, cutting source and growth regulator concentration significantly affected survival rate, shoot sprouting and rooting of cocoa cuttings at p = 0.05. Overall, cuttings started producing shoots 3 weeks after setting (WAS) and at 10 WAS all the cuttings had rooted. Assessment of cuttings in Clementine propagators showed a survival rate of approximately 75%, with orthotropic cuttings showing higher results than plagiotropic cuttings, whereas, D1 (12.5 mg) was the overall effective growth regulator (IBA) concentration that induced the highest number of roots from all the clones. UPA143 was the clone with highest value for all the factors assessed. The results will be valuable in management decision when producing planting materials by stem cuttings. 

Key words: Theobroma cacao, vegetative propagation, clone, cutting source, growth regulator concentration, clementine propagator, shoot and root growth.

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APA Essola, E. E. Jr., Gusua, C. R., Tchapda, T. D., & Andre, O. N. P. (2017). Vegetative propagation of selected clones of cocoa (Theobroma cacao L.) by stem cuttings. Journal of Horticulture and Forestry, 9(9), 80-90.
Chicago Essola Essola Emmanuel Junior, Caspa Roseline Gusua, Tchatchoua Dorothy Tchapda and Owona Ndongo Pierre Andre. "Vegetative propagation of selected clones of cocoa (Theobroma cacao L.) by stem cuttings." Journal of Horticulture and Forestry 9, no. 9 (2017): 80-90.
MLA Essola Essola Emmanuel Junior, et al. "Vegetative propagation of selected clones of cocoa (Theobroma cacao L.) by stem cuttings." Journal of Horticulture and Forestry 9.9 (2017): 80-90.
   
DOI https://doi.org/10.5897/JHF2017.0502
URL http://academicjournals.org/journal/JHF/article-abstract/FC037CC65866

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