Determination of starch concentration in grapevine woody tissues is pivotal to optimize some vineyard management techniques. Analytical assays represent the most reliable approach but nevertheless they are time-consuming. This study reports preliminary results on using imaging to estimate starch concentration in woody tissues stained with the Lugol’s solution indicator in Vitis vinifera L.. One-year-old shoots (cv ‘Primitivo’) were sampled in winter time and forced to sprout inducing a starch depletion. The measured starch ranged from approx. 0.1 to 14.4 % (DW). Parallel image-based and analytical starch concentrations data (n =42) revealed that R (red), G (green) and B (blue) color channels were highly predictive across three phenological stages (r= - 0.92), rising the imaging technique p

Preliminary image-based appraisal of starch in one year-old grapevine shoots

Antonio Carlomagno;Antonella Zaccagnino;Giuseppe Montanaro;Vitale Nuzzo
2023-01-01

Abstract

Determination of starch concentration in grapevine woody tissues is pivotal to optimize some vineyard management techniques. Analytical assays represent the most reliable approach but nevertheless they are time-consuming. This study reports preliminary results on using imaging to estimate starch concentration in woody tissues stained with the Lugol’s solution indicator in Vitis vinifera L.. One-year-old shoots (cv ‘Primitivo’) were sampled in winter time and forced to sprout inducing a starch depletion. The measured starch ranged from approx. 0.1 to 14.4 % (DW). Parallel image-based and analytical starch concentrations data (n =42) revealed that R (red), G (green) and B (blue) color channels were highly predictive across three phenological stages (r= - 0.92), rising the imaging technique p
2023
979-8-3503-1271-3
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/173315
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