Fruit quality characterization of wild and cultivated blackberries (Rubus sp.)

Resumen

Objective: To characterize wild and cultivated blackberries for fruit quality to identify those with outstanding traits for genetic improvement.

Design/methodology/approach: External and internal variables associated with fruit quality were evaluated in ripe blackberries. The variables evaluated were: fruit length, fruit width, fruit weight, fruit shape, seed area, pH, titratable acidity, and total soluble solids. Statistical analysis was performed for each variable. Cluster and multivariate analysis were assessed to determine variability and relationship between the germoplasm.

Results: The Rubus glaucus Benth. accession showed values similar to cultivated varieties in length, width, and fruit weight, number of drupelets per fruit, pH, and total soluble solids, while the Rubus philyrophyllus Rydb. accession exhibited values similar to cultivated varieties in seed area, pH, titratable acidity, and total soluble solids. One classic variety and three contemporary varieties stood out with large, heavy fruits and more drupeoles, and one commercial variety had the highest total soluble solids.

Limitations on study/implications: Fruit quality characterization of wild and cultivated blackberries is an initial and essential step to identify germplasm with outstanding traits. Integrate this species into breeding programs will contribute to broadening the genetic base and incorporate their favorable alleles, actions that contribute to their utilization by humans and their conservation.

Findings/conclusions: The characterization allowed to identify the R. glaucus Benth. and R. philyrophyllus Rydb. wild species with outstanding traits, which facilitates their appreciation and integration into breeding programs