Study of physiological indices on the new varieties of vine grapes grown in the Winegrowing Center Copou Iași

Abstract

In the process of photosynthesis an important role have chlorophyll assimilators pigments a and b, which comprise two photosynthetic systems involved in photosynthesis. The purpose of this study was the quantitative determination of chlorophyll and carotenoids pigments in leaves of new table grape varieties Paula and Gelu compared to control variety ”Aromat de Iasi”, all our creations. The results obtained after processing data using formulas proposed by Lichtenhaler (1987), showed a higher chlorophyll content on variety Paula (4.057 mg/g ), followed by Gelu (3.057 mg/g) both higher than Iasi (2.441 mg/g). The same trend was recorded for chlorophyll b and carotenoids -ratio 3 /1 or 4/1. The content of photosynthetic pigments (mg/g) as compared to the reference values was influenced primarily by the grape variety: the anatomical structure and morphology of the leaves.