Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia

Main Article Content

Autores

Diana Carolina Guerrero
Jaime Alberto Barrera
María Soledad Hernández
Guillermo Vargas

Abstract

This research was undertaken on four farms in the department of Caquetá in order to analyze the physiological responses of five copoazu phenotypes from a Sinchi collection in the early stages of growth under different canopy coverings. To create such an effect, an experimental design of blocks was used with five copoazu phenotypes distributed at random. During the period of evaluation, variables of plant height, leaf area, dry mass, and rates of growth were determined. The direct variables increased constantly, especially in size and quantity of dry materials, as well as maintaining leaf area. In contrast, the rates of growth, net assimilation rate, relative growth rate, leaf area index and leaf area ratio presented oscillating values in five ecotypes during the period of evaluation. These results indicated differential behaviour of copoazu in the first phases of growth which indicated an interaction of a genotype with an environment reflected in the different behaviours of physiological determinants of the plant and providing evidence of certain plasticity in phenotypes, according to each of the covers, the best of which under 15% coverage. The ecotypes 4 and 11 differed from the other ecotypes presenting better adaptability in all sites independent of the percentage of cover. Previous studies showed that, according to their morpho-agronomic characteristics, these ecotypes present a high productivity and are included in the group characterised by different levels of tolerance to the attacks of witch broom (Crinipelis perniciosa).

Keywords:

Article Details

Licence

The copyright of the articles and illustrations are the property of the Revista Colombiana de Ciencias Hortícolas. The editors authorize the use of the contents under the Creative Commons license Attribution-Noncommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0). The correct citation of the content must explicitly register the name of the journal, name (s) of the author (s), year, title of the article, volume, number, page of the article and DOI. Written permission is required from publishers to publish more than a short summary of the text or figures.

References

Ballaré, C.L., P.W. Barnes y S.D. Flint. 1995. Inhibition of hypocotyl elongation by ultraviolet-B radiation in de-etiolating tomato seedlings: I. The photoreceptor. Physiol. Plant. 93, 584-592.

Bjorkman, O. 1981. Responses to different quantum flux densities. En: Encyclopedia of plant physiology: Plant ecology I. Springer-Verlag, New York. pp. 57-107.

Donoso, C. 1981. Ecología forestal, el bosque y su medio ambiente. Facultad de Ciencias Forestales, Universidad Austral de Chile, Valdivia. 369 p.

Early, E.B. 1996. Effects of shade on maize production under field conditions. CropSci. 6, 1-7.

Lopes, N.F., M.A. Oliva, J.G. Freitas, E. Melges y N.E. de M. Beltrão. 1982. Análise de crescimento e conversão da energia solar em feijoeiro (Phaseolus vulgaris L.) submetido a três níveis de densidade do fluxo radiante. Ceres Viçosa 29, 586-606.

Evans, G.C. 1972. The quantitative analysis of plant growth. Studies in ecology. Vol 1. Blackwell Scientific Publication, London. pp. 45-68.

Gardner, F., R. Pearce y R. Mitchell.1985 Physiology of crop plants. Iowa State University Press, Aimes. pp. 187-208.

Gómez, C., C. Buitrago, M. Cante y B. Huertas. 1999. Ecofisiología de la papa (Solanum tuberosum). Revista Comalfi 26, 42-55.

Hunt, R. 1978. Plant growth análisis. Studies in biology 96. Edward Arnold Publishers, London. 67 p.

Hunt, R., J. Warren Wilson, D.W. Handy y D.G. Sweeney. 1984. Integrated analysis of growth and light interception in winter lettuce. I. Analytical methods and environmental influences. Ann. Bot. 54, 743-757.

Jarma, A., C. Buitrago y S. Gutiérrez, S. 1999. Respuesta de crecimiento de la habichuela (Phaseolus vulgaris L. Var. Blue Lake) a tres niveles de radiación incidente. Revista Comalfí 26, 62-73.

Koller, D. 1990. Light drive leaf movements. Plant Cell Environ., 615-632.

Little T.M. y F.J. Hills. 1976. Métodos estadísticos para la investigación en la agricultura. Editorial Trillas, Mexico. pp. 59-65.

Lynois, E. y J. Sanchez. 1983. Análisis de crecimiento de la fase vegetativa y de formación de espiga de tres cultivares de cebada (Hordeum vulgare) bajo tres condiciones de siembra. Trabajo de grado. Facultad de Agronomía, Universidad Nacional de Colombia. 129 p.

Magalhaes, A.C. y J.C. Motojo. 1971. Effect of solar radiation on the growth parameters and yield of two varieties of common bean (Phaseolus vulgaris). Turrialba 21, 165-168.

Paez. A., V. Paz y J. López. 2000. Crecimiento y respuesta fisiológica de plantas de tomate cv. Río Grande en la época mayo-julio. Efecto de sombreado. Rev. Fac. Agron. (LUZ) 17, 173-184.

Rangel, O., P. Lowy y M. Aguilar. 1997. Colombia diversidad biótica II. Tipos de vegetación en Colombia. Editorial Guadalupe Ltda., Bogotá. pp. 59-87.

Rojas, M. 1993. Fisiología vegetal aplicada. Cuarta edición. Interamericana McGraw Hill.

Rojas, S., J. Zapata, E. Varón y A. Pereira. 1996. Copoazú. Corpoica Macagual Florencia, Caquetá.

Salisbury, F. y C. Ross. 1994. Fisiología vegetal. Grupo Editorial Iberoamérica, México. pp. 376-377.

Tratado de Cooperación Amazónica. 1999. Copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. cultivo y utilización. Manual técnico.

Downloads

Download data is not yet available.