Banca de DEFESA: LUCILÂNDIA DE SOUSA BEZERRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUCILÂNDIA DE SOUSA BEZERRA
DATE: 14/08/2023
TIME: 14:00
LOCAL: Google Meet
TITLE:

Postharvest quality of 'Gefner' atemoia fruits grown in the Brazilian Semiarid

KEY WORDS:

Anonaceous. Climacteric fruit. Ripening. Storage. Organoleptic characteristics.

PAGES: 76
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

The atemoia (Annona squamosa x A. cherimola) is a fruit much appreciated for its organoleptic characteristics, however, it has a short postharvest shelf life, since it presents limitations in the harvest and in its ripening process. Therefore, the objective of this research was to determine the appropriate harvest point and the effects of foliar application of gibberellin and calcium on the reduction of fruit cracking and improvements in the quality and postharvest conservation of atemoia cv. Gefner. The work was divided into two experiments, the first being carried out in a completely randomized design (DIC) in a 3x5 factorial scheme, with three stages of fruit maturation (100, 105 and 110 days after pollination - DAP) and five refrigerated storage times (0, 3, 6, 9 and 12 days). The evaluations performed were fruit appearance, incidence of cracking, mass, loss of fresh mass, color, firmness, soluble solids, pH, titratable acidity, vitamin C, total sugars, reducing sugars, starch, antioxidant activity and polyphenols. In the second, applications of calcium and gibberellic acid were performed on the fruits at 7, 27, 47, 67 and 87 DAP, homogeneous samples of the fruits of each treatment were collected at 121 DAP. A DIC was performed in a 4x6 factorial scheme, with four treatments: control, Calcium (Ca), Gibberellic Acid (GA3) and Calcium + Gibberellic Acid (Ca+GA3); and six refrigerated storage times (0, 3, 6, 9, 12 and 15 days). The fruits were submitted to the following evaluations: appearance, mass, fresh mass loss, cracking index, firmness, color, pH, titratable acidity, soluble solids, vitamin C, chlorophyll, electrolyte leakage, total sugars, starch, antioxidant activity, polyphenols, activity of the enzymes Peroxidase, Polyphenoloxidase and quantification of minerals (Ca, Mg, Na and K). The variables evaluated were submitted to analysis of variance by the F test (p

COMMITTEE MEMBERS:
Externo à Instituição - EBENÉZER DE OLIVEIRA SILVA - EMBRAPA
Externa à Instituição - NAAMA JESSICA DE ASSIS MELO - UFERSA
Presidente - 1632114 - PATRICIA LIGIA DANTAS DE MORAIS
Interno - 1547955 - VANDER MENDONCA