title: Fruit quality of Redhaven and Royal Glory peach cultivars on seven different rootstocks.
abstract: Two peach cultivars, Redhaven and Royal Glory, grafted on seven different rootstocks (Adesoto, Barrier 1, GF 677, Ishtara, Monegro, Penta, and peach seedling) were analyzed for tree vigor and yield. Fruit of similar ripeness (fruit firmness) was analyzed in terms of pomological (fruit weight, soluble solids content) and biochemical parameters (individual sugars, organic acids, phenolic acids in the flesh and peel, as well as flavonols and anthocyanins in the peel). A uniform effect of rootstock on tree size was evident in the cases of both cultivars. The Ishtara rootstock induced weak tree growth; Adesoto, Penta and peach seedling semivigorous growth; and Barrier 1, GF 677, and Monegro vigorous tree growth. We recorded higher yields in the Redhaven cultivar, while no significant differences in yield in the fourth growing season were found among the rootstocks for each cultivar. Rootstock had no effect on soluble solids in the Redhaven cultivar, while in the Royal Glory it did. Penta yielded the highest soluble solids content levels, while Adesoto and Monegro were associated with low levels. In the fruit from both cultivars, the rootstock had a significant influence on individual sugars, organic acids, and phenolic acids in the pulp. We also found that phenolic acids in the pulp and skin were more affected by the rootstock than other secondary metabolites analyzed, regardless of the cultivar.
authors.affiliation: Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia. primoz.orazem@bf.uni-lj.si
authors.forename: Primoz
authors.initials: P
authors.lastname: Orazem
authors.forename: Franci
authors.initials: F
authors.lastname: Stampar
authors.forename: Metka
authors.initials: M
authors.lastname: Hudina
mesh_terms: D000872:Anthocyanins / Q000032:analysis; D002241:Carbohydrates / Q000032:analysis; D044948:Flavonols / Q000032:analysis; D005638:Fruit / Q000737:chemistry* / Q000254:growth & development*; D006824:Hybridization, Genetic; D010636:Phenols / Q000032:analysis; D018517:Plant Roots; D027861:Prunus / Q000254:growth & development*; D011786:Quality Control; D013045:Species Specificity
chemical_list: D000872:Anthocyanins; D002241:Carbohydrates; D044948:Flavonols; D010636:Phenols