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Quality of fruits of Physalis peruviana L. in the function of different types of training and pruning

Abstract

Physalis peruviana L. is a small fruit known for the great pharmacological importance, since it has high levels of vitamin A, C, iron, and phosphorus. Cultural practices such as training and pruning can influence the architecture of the plant, in such a way to obtain fruits of better quality. Therefore, the objective of this work was to evaluate the quality of fruits of Physalis peruviana L. produced in different systems of training and pruning. The work was carried out in Londrina-PR-Brazil using a completely randomized design, in a 4 × 2 factorial scheme containing four types of training (“UEL training”, “adapted inverted V training”, without training and “vertical training”) and two types of pruning (with and without prune) with four replicates. The analyzed variables were: fruit size and height, fresh weight with and without calyx, color (L *, C * and ), number of fruits per plant, total soluble solids, pH, and acidity. The data were submitted to analysis of normality and homogeneity and compared by the Tukey test, at a 5% of probability level by the Sisvar program, and correlated by the Pearson test using the statistical program R. We conclude that plants conducted freely, had the highest values of fresh fruit mass with calyx. The conduction systems provide greater penetration of the solar radiation in the canopy, which favors, the accumulation of sugars and the intensity of the colorations of the calyxs. Plants conducted by the training systems UEL - State University of Londrina and adapted inverted “V” (both without pruning), obtained a greater amount of fruits. The pruning resulted in reduced fruit volume, lower values of soluble solids (SS), and dark calyx with a tendency to yellowish color.

Keywords:
Characterization of fruits; Pruning; Physalis; Management; Post-harvest; Solanaceae

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