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The aim of this research was to evaluate the vegetative growth, flowering and some attributes of physicochemical quality in blackberry ‘Tupy’ fruits cultivated in Chihuahua, Mexico. The study was carried out in San Juanito and La Finca with twentyfive replications per site. The length and number of sprouts, flowering, total soluble solids (TSS), total titratable acidity (TTA), pH, colour, ascorbic acid (AA), total anthocyanins (TA), total phenols (TP) and antioxidant capacity (AC) were evaluated. San Juanito presented the blackberry plants with the longest sprout length (169.71 cm), but their number was similar to La Finca, which also showed statistical significance with respect to the minimum temperature range (-2.9 and -1.2 °C), which manifested itself in less accumulation of cold units (658) and degree days (886). The flowering event started at 108 Julian days (April 19) for San Juanito completely evading the occurrence of late frosts, while La Finca maintained a 10% risk. The fruits harvested in the Finca showed the highest content of TA (75.7 mg cyanid-3-glucosid 100 g), maintaining the fruit quality without changes for both sites. The results indicate that the environmental temperature conditions of San Juanito are suitable for vegetative growth and floral development, by completely avoiding the occurrence of late frosts and obtaining fruits with quality similar to that harvested in orchards with commercial production.

Vegetative Growth, Flowering and Attributes of Physicochemical Quality in Blackberry ‘Tupy’ Fruits Grown in Chihuahua, Mexico