In situ characterization of the morphological variability in cocoa (Theobroma cacao L.) from Pastaza Province

Authors

  • Guillermo Perez Garcia University of Ciego de Ávila image/svg+xml
  • Cristian Chimborazo Sarabia Ministerio de Agricultura
  • Jorge Freile Almeida Universidad Estatal Amazónica image/svg+xml

DOI:

https://doi.org/10.59410/RACYT-v04n02ep03-0051

Keywords:

Morphological variability, selection, similarity, rescued trees

Abstract

Presently work was analyzed the morphological variability of the cocoa crop in existence in the Pastaza Province, in places that were previously defined, those were selected plants, that make traps of the behavior of all the notable production and its resistance to illnesses. Forty-eight individuals were valued, of which three witnesses were included that were the CCN-51, ISC95 and National clones, those were characterized by its high production and quality and its resistance to the moniliasis. Thirty-two variables were evaluated so much qualitative as quantitative of the fruit, seeds, leaves, and flowers with the objective of characterize the individuals, analyzed statistically by means of multivaried analysis. The characteristics of its flowers were the descriptors that allowed to separate individuals with major accuracy, those that grouped toward the clones utilized as witness, as well as for sectors, what demonstrated regionalization of the materials analyzed responding to the Triunfo area, toward the National cocoa, Canelos trees toward the ICS95 and the Arajuno area that did not show likeness with the clones witness. Twenty-five outstanding trees were selected.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

References

Bekele, F. y D.R. Butler.2000. Proposed list of cocoa descriptors for characterization. In: Working Procedures for cocoa germplasm evaluation and selection (A.B. Eskes, J.M.M. Engels y R.A. Lass, eds.). CFC/ICCO/IPGRI, Montpellier, Francia. Pp. 41-48

Crouzillat, D.;L. Bellanger; M. Rigoreau; P. Bucheli; V. Pétiard. 2001. Genetic structure, characterization and selection of Nacional cocoa compared to other genetic groups. International Workshop on New Technologies and Cocoa Breeding. Sabah, Malaysia. Pp. 47-55

Engels, J.; B. Bartley; G.A. Enríquez, 1980. Cocoa descriptors, their states and modus operandi. Turrialba 30(2):209–218

Enríquez, G.A. 2004. Cacao orgánico. Guía para productores ecuatorianos. Instituto Nacional Autónomo de Investigaciones Agropecuarias. Manual No. 54. Quito, Ecuador, Pp. 360

FAOSTAT,2014..http://faostat.fao.org/Desktopfault.aspx?PageID=567&lang=es#ancor. Consultado 23/12/2014. InfoStat. 2002. Versión 1.1. Universidad Nacional de Córdoba, Argentina

Johnson, E.; F,Bekele; S, Brown; D, Zhang; L, Meinhart; R, Schnell. 2009. Population structure and genetic diversity of the Trinitario cocoa (Theobroma cacao L.) from Trinidad and Tobago. Crop Science 49: 564–572 DOI: https://doi.org/10.2135/cropsci2008.03.0128

Kovach, M. 1999. A Multi-Variate Statistical Package for Windows, ver.3.1. Kovach Computing Services, Wales, UK. Pp. 44-49

Motamayor, J.C.; Risterucci, A.M; Heath, M; Lanaud, C.2003. Cocoa domestication II: progenitor germplasm of the Trinitario cocoa cultivar. Heredity 91: 322–330 DOI: https://doi.org/10.1038/sj.hdy.6800298

Motilal, L.A; D. Zhang; S. Mischke; L. Mainhardt; P. Umaharan. 2013. Microsatellite-aided detection of genetic redundancy improves management of the International Cocoa Genebank, Trinidad. Tree Genetics & Genomes 9: 1395-1411 DOI: https://doi.org/10.1007/s11295-013-0645-5

Luna, F.; D. Crouzillat; L. Cirou; P. Bucheli. 2002. Chemical composition and flavor of Ecuadorian cocoa liquor. Journal of Agriculture and Food Chemistry 50(12): 3527–32 DOI: https://doi.org/10.1021/jf0116597

Phillips, W. 2003. Origen, Biogeography, Genetic Diversity and Taxonomic Affinities of the Cacao (Theobroma cacao) Fungus Moniliophthoraroreri (Cif) Evans et al. as Determined using Molecular. Phytopatholological and Morpho-physiological Evidence. Tesis Ph.D. UK, University of Reading. UK. Pp. 349

Quiroz, J. 2002. Caracterización molecular y morfológica de genotipos superiores con características de cacao Nacional (Theobroma cacao L). Tesis Mg. SCI-Turrialba. CATIE. Costa Rica. Pp.

Quiroz, J. 2008. Características agronómicas de nuevos materiales genéticos de cacao preseleccionados en la amazonia sur. INIAP. Santiago de Méndez. Ecuador. Pp. 26

Romero, C.A; J.A. Bonilla; E.G Santos; E.L Peralta. 2010. Identificación varietal de 41 plantas seleccionadas de cacao (Theobroma cacao L.) provenientes de cuatro cultivares distintos de la Región Amazónica Ecuatoriana, mediante el uso de marcadores microsatélites. Revista Tecnológica ESPOL-RTE 23(1): 121-128

Vasco, M.A. 2008. Avances en el desarrollo de nuevas variedades de cacao en el Ecuador. Situación actual y perspectivas. INIAP. Santiago de Méndez. Ecuador. Pp. 60

Ward, J.H. 1963. Hierarchical group to optimize an objective function. Journal of the American Statistical Association 58(301): 236-244 DOI: https://doi.org/10.1080/01621459.1963.10500845

Published

2015-08-28

How to Cite

Pérez Garcia, G., Chimborazo Sarabia, C., & Freile Almeida, J. A. (2015). In situ characterization of the morphological variability in cocoa (Theobroma cacao L.) from Pastaza Province. Revista Amazónica. Ciencia Y Tecnología, 4(2), 146–165. https://doi.org/10.59410/RACYT-v04n02ep03-0051