Influence of Harvest Stage and Rootstock Genotype on Compositional and Sensory Profile of the Elongated Tomato cv. “Sir Elyan”
Rosario Paolo Mauro | Valeria Rizzo | Cherubino Leonardi | Agata Mazzaglia | Giuseppe Muratore | Miriam Distefano | Leo Sabatino | Francesco Giuffrida
The present experiment addressed the effects of two harvest stages, namely breaker (S<sub>1</sub>) and turning (S<sub>2</sub>), on compositional and sensory profile of grafted, greenhouse elongated tomatoes cv. “Sir Elyan”. The rootstocks “He-Man”, “Interpro”, and “Armstrong” were used. The S<sub>1</sub> fruits showed a higher dry matter content, firmness and titratable acidity when compared to the S<sub>2</sub> ones (by 6%, 3%, and 15%, respectively). They showed, also, the highest L-ascorbic acid concentration and antioxidant activity. Differently, soluble solid content, lycopene and β-carotene increased in the S<sub>2</sub> fruits (by 4%, 92%, and 26%, respectively). Excepting methyl salicylate, all the volatiles detected peaked in the S<sub>2</sub> fruits, which were scored by panelists as sweeter and more flavorful than the S<sub>1</sub> ones. Among the rootstock genotypes, “He-Man” promoted fruits firmness, carotenoids concentration and antioxidant activity, irrespective of the harvest stage. “Interpro” enhanced the sensory attributes of the S<sub>1</sub> fruits in terms of bitterness, sourness, sweetness and flavor. Differently, sweetness, sourness, and tomato flavor of the S<sub>2</sub> fruits were promoted by “Armstrong”. The results highlight the influence of rootstock genotype on the nutraceutical and sensorial profile of “Sir Elyan” fruits harvested at early ripening stages.
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