Agronomía

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    Evaluar la eficiencia de la multiplicación asexual en cacao (theobroma cacao) al aplicar ácido giberélico en la zona de Caluma.
    (Universidad Estatal de Bolívar . Facultad de Ciencias Agropecuarias . Escuela de Ingeniería Agronómica, 2007) Rojas Montero, Ángel Isaac; Sánchez Morales, José Antonio
    Cocoa is native to Mexico, whose fermented seeds, toasted and ground tropical plant the key ingredient of chocolate is obtained. The main producers of cocoa are; Venezuela, Colombia, Ecuador, Peru, Brazil, Africa and Central America. (Ospina, J.1995). Cocoa cultivation in one form or another has spread and today is cultivated in almost all tropical and subtropical areas of the globe (Ochse, M.1998). Currently almost three million tons of cocoa produced worldwide. Cocoa production in Ecuador is 88,000 metric tons (Fernandez, J. 2000). At the level of the Province of Bolivar production is 958 tons distributed in the areas of Caluma, Echeandía, ships and San Luis de Pambil, with an area of ​​approximately 17 984 hectares (INEC. 2002). A cantonal cocoa farming is of great importance since it depends on the economy of much of the farmers it has been successfully adapted to this area resulting in excellent production both in quantity and quality (Rojas, A. 2005). In the canton Caluma cocoa it is currently a source of income for farmers, since it is the second most after orange. The cantonal production is 230 tons spread over 4,770 hectares. (MAG. 2000). The application of plant growth regulators is widespread in many cultures and with it very different and specific objectives pursued. The plant growth regulator is a synthetic hormone. The organic substance is a hormone that is synthesized within the plant and that at low concentrations, can activate, inhibit, or modify their growth. Its fundamental action is to accelerate or slow certain stages of plant development. (Yuste, P 2000). Gibberellins are chemically related substances gibberellic acid. They are characterized mainly by their influence on stem elongation and therefore the greater plant growth. (Soberón, J. 2005). Gibberellic acid (GA) produces elongation and stem cells with a similar indoleacetic acid (IAA) but not identical effects. That acts in many tissues where indoleacetic acid is ineffective or inhibitory and vice versa. In some tissues, whether applied indoleacetic acid having a greater stimulatory effect of lengthening normal. This suggests that the action of gibberellin occurs somewhere that precedes the action of auxin in the reaction sequence leading to growth stimulation by elongation. Indoleacetic acid effects are related to protein synthesis and act at the level of enzyme induction or transcription deoxidized ribonucleic acid (DNA). Gibberellic acid stimulates cell division in the apex of the stem and stem elongation. (Bidwell, R. 1993). In asexual propagation by grafting once the grafts begin to sprout gibberellic acid is applied in order to obtain as quickly as possible and therefore grafting plants of good quality and in less time to meet the producers of this noble Fruit (INIAP. 1999).