title: Diversity for chemical composition in a collection of different varietal types of tree tomato (Solanum betaceum Cav.), an Andean exotic fruit.
abstract: We evaluated 23 tree tomato (Solanum betaceum) accessions from five cultivar groups and one wild relative (Solanum cajanumense) for 26 composition traits. For all traits we found highly significant differences (P<0.001) among the materials studied. The high diversity found within S. betaceum for composition traits was matched by a high diversity within each of the cultivar groups. We found that sucrose and citric acid were the most important soluble sugar and organic acid, respectively, in tree tomato. Fruit in the anthocyanin pigmented (purple) group had a carotenoid content similar to that in the yellow-orange cultivar groups. Total phenolic content was significantly correlated (r=0.8607) with antioxidant activity. Analyses of mineral content showed that tree tomato is a good source of K, Mg, and Cu. Multivariate principal components analysis (PCA) confirmed that an important diversity exists within each cultivar group. The results we have obtained indicate that the high diversity found within the tree tomato could be exploited for selection and breeding for developing the tree tomato as a commercial crop.
authors.affiliation: Departamento de Ciencias Agropecuarias y de Alimentos, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, 1101608 Loja, Ecuador.
authors.forename: Pablo G
authors.initials: PG
authors.lastname: Acosta-Quezada
authors.affiliation: Departamento de Química, Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain.
authors.forename: María D
authors.initials: MD
authors.lastname: Raigón
authors.affiliation: Departamento de Ciencias Agropecuarias y de Alimentos, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, 1101608 Loja, Ecuador.
authors.forename: Tania
authors.initials: T
authors.lastname: Riofrío-Cuenca
authors.affiliation: Departamento de Química, Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain.
authors.forename: María D
authors.initials: MD
authors.lastname: García-Martínez
authors.affiliation: Instituto de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain.
authors.forename: Mariola
authors.initials: M
authors.lastname: Plazas
authors.affiliation: Departamento de Ciencias Agropecuarias y de Alimentos, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, 1101608 Loja, Ecuador.
authors.forename: Juan I
authors.initials: JI
authors.lastname: Burneo
authors.affiliation: Departamento de Ciencias Agropecuarias y de Alimentos, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, 1101608 Loja, Ecuador.
authors.forename: Jorge G
authors.initials: JG
authors.lastname: Figueroa
authors.affiliation: Instituto de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain.
authors.forename: Santiago
authors.initials: S
authors.lastname: Vilanova
authors.affiliation: Instituto de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain. Electronic address: jprohens@btc.upv.es.
authors.forename: Jaime
authors.initials: J
authors.lastname: Prohens
mesh_terms: D001947:Breeding; D002241:Carbohydrates / Q000032:analysis; D002338:Carotenoids / Q000032:analysis; D005638:Fruit / Q000737:chemistry; D018551:Solanum lycopersicum / Q000737:chemistry* / Q000145:classification; D010636:Phenols / Q000032:analysis; D025341:Principal Component Analysis
chemical_list: D002241:Carbohydrates; D010636:Phenols; D002338:Carotenoids
keywords: Antioxidants; Minerals; Organic acids; Proximate composition; Soluble sugars; Tree tomato