METABOLIC AND PHENOTYPIC CHARACTERIZATION OF PEACH VARIETIES FROM INTA SAN PEDRO

MONTI, LAURA; MAULION, EVANGELINA; VALENTINI, GABRIEL; DAORDEN, MARIA ELENA; GABIOLONDO, JULIETA; BUDDE, CLAUDIO OLAF; OSORIO ALGAR, SOÑA; FERNIE, ALISDAIR R; CERVIGNI, GERARDO; ANDREO, CARLOS SANTIAGO; LARA, MARÍA VALERIA; DRINCOVICH, MARÍA FABIANA

Potrero de los Funes

Congreso; XLVII Reunión Anual de SAIB; 2011

Sociedad Argentina de Investigación en Bioquímica y Biología Molecular

Fruits are a major source of micronutrients and phytonutrients inhuman diet. Among fruits, rosaceous fruit displays a great varietyof flavours and textures, as well as high-content of metabolitesexhibiting nutrition-related health properties. Peach [Prunuspersica (L.) Batsch] is one of the most economically importantrosaceous fruit that has become a model plant in genomic studies offruit trees. In the present work, 10 varieties from INTA San Pedro,were selected for phenotypic and metabolic characterization. Thevarieties were selected based on their different origins and dividedin early-, mid- and late-season varieties. Productivity andflowering time were compared among them. Fruits from the 10-varieties were harvested at physiological maturity (50N offirmness) and allowed to ripen at 20ºC until optimal firmness forconsuming. Samples for GC–MS-based metabolic profiling weretaken at harvest and after ripening. The ripening process, colourand soluble solid content were also compared among the varieties.Although these peach varieties are genetically similar, they arehighly variable in fruit quality and postharvest performance.Therefore, their metabolic profile during the ripening process willbe a helpful tool for the identification of metabolites involved indifferent traits and for the analysis of the processes related to fruitnutrient content, ripening and softening