Yield and quality parameters of two radicchio ( Cichorium intubys L.) cultivars as affected by growth season.

摘要

Last decade radicchio become more popular vegetable,as a result, of the increasing demand of fresh-cut vegetables where radicchio contribute to the more attractive appearance. This study evaluate the growth season (normal and late transplanting, 31/7 and 12/9 respectively) of two radicchio cultivars ('Rosso di Chioggia' and 'Rosso di Verona') on their quality parameters (yield and chemical composition) as well as the storage potential of heads from one harvest. Cultivar had no significant effect on the yield or quality parameters of radicchio. On the contrary, yield as well as percentage of marketable heads significantly affected by growth season with drastic decrease for the late growth period. However, heads from the late growth period had higher content of SSC, nitrates, phenolics and antioxidant activity. The storage of radicchio heads at 0掳C resulted in significant decrease on their visual quality after 7 days however after 21 days of storage heads were over the limit of marketability.