The experiment was carried out under field conditions, where the fruits were harvest in Brazilian guava trees with six years old, growing on orchard of EMBRAPA- Temperate weather. The aim of the research was to determine the chemical composition, the efficiency of glucose conversion in new compounds and growth respiration estimate of the fruits during its ontogeny. The macronutrients content decreased with fruit development cycle. The contents of starch, total soluble sugars, reduced sugars, lipids and organic acids augmented as the fruits aged, while the protein contents and the components of cell wall decreased during fruit ontogeny, with strong accumulation during ripening. The carbohydrates were the major organic compounds, determining low cost of fruit respiration. The Brazilian guava showed to be an efficient fruit on glucose conversion in other organic compounds. The respiratory coefficient decreased as the fruit aged. The growth respiration rate increased until the middle of accelerate growth phase of the fruit.
Brazilian guava; growth respiration coefficients; efficiency of sugars conversion
