Resumo

ALMANZA-MERCHAN, PEDRO JOSÉ; VELANDIA D., JULIÁN DAVID  e  TOVAR L., YEILY PAOLA. Physicochemical properties during growth and development of fruits of two varieties of lulo (Solanum quitoense Lam.). rev.colomb.cienc.hortic. [online]. 2016, vol.10, n.2, pp.222-231. ISSN 2011-2173.  https://doi.org/10.17584/rcch.2016v10i2.5065.

ABSTRACT The lulo (Solanum quitoense Lam.), considered a promissory fruit and potential species to global markets, has become an important sector to the economy of Boyacá Department (Colombia). The current investigation seeks to characterize fruits from two varieties of lulo (Chonto grueso and Criollo) during its growth and development, grown in the municipality of Pachavita, Boyaca. For that, each 10 days, fruits of the two varieties were collected starting from 30 days after the anthesis (daa). The physicochemical features of fresh biomass, total titratable acidity (TTA), total soluble solids (TSS), firmness and respiratory rate (RR) were evaluated. It was found that fruits of the two varieties had a sigmoid type growth curve that was adjusted to a logistic growth model, observing three growth phases described as: Phase I, cellular proliferation; Phase II, cellular elongation; and Phase III, ripening. In the same way, the chemical properties were adjusted to polynomial models, where the TTA and TSS increased progressively, whereas the RR was decreasing according to the own characteristics of lulo fruits and the organoleptic quality required for its consumption.

Palavras-chave : phenology; Solanaceae; days after anthesis; respiration rate.

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