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Published in Scientific Papers. Series B, Horticulture, Vol. LXIV, Issue 1
Written by Vlăduț Ion CIMPOI, Liliana ROTARU, Vasile Răzvan FILIMON, Lucia Cintia COLIBABA, Elena Cristina SCUTĂRAȘU, Ioana CĂLIN

The physiological role of the assimilating pigments is complex, being involved in the processes of oxidation-reduction, in the photosynthesis and protection processes against ultraviolet radiation. The study aims to track vegetative growth during the vegetation period by spectrophotometrically determining the content of chlorophylls (a and b) and carotenoids from the leaves of vine varieties (Vitis vinifera L.) for table grapes ʻGeluʼ and ʻPaulaʼ, new varieties created within the Research and Development Station for Viticulture and Winemaking Iasi. The two varieties were grafted on three rootstocks (Riparia Gloire, Berlandieri x Riparia Selection Oppenheim 4-clone 4 and Berlandieri x Riparia Selection Crăciunel 2), thus creating six working variants. Following the completion of the observations, ʻGeluʼ/Riparia gloire variant recorded the best results in terms of vegetative growth in the vegetation period measuring 45.39 cm (before wood maturation) followed by ʻPaulaʼ/SO4-4, which recorded 37.32 cm at the last measurement. Regarding the determination of the content of photosynthetic pigments (chlorophyll a and b, respectively carotenoids), the best results were obtained in the ʻGeluʼ variety on all rootstocks. ʻPaulaʼ grape variety registered smaller values.

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