Glasnik Zaštite Bilja, Vol. 48. No. 5., 2025.
Izvorni znanstveni članak
https://doi.org/10.31727/gzb.48.5.2
Morphometric characteristics of the leaf of ‘Merlot’ and ‘Syrah’ (Vitis vinifera L.) varieties in the vineyard of the Central Istria wine-growing region
Marin Tomičić
; Veleučilište u Rijeci, Rijeka, Hrvatska
Leonardo Ošo
; Veleučilište u Rijeci, Rijeka, Hrvatska
Ivana Dminić Rojnić
; Veleučilište u Rijeci, Rijeka, Hrvatska
Slavica Dudaš
; Veleučilište u Rijeci, Rijeka, Hrvatska
Melita Zec Vojinović
; Veleučilište u Rijeci, Rijeka, Hrvatska
Martina Peršić
orcid.org/0000-0002-4722-1076
; Veleučilište u Rijeci, Rijeka, Hrvatska
*
* Dopisni autor.
Sažetak
This study aimed to conduct a comparative morphometric and colorimetric analysis of ‘Merlot’ and ‘Syrah’ grapevine leaves to identify key distinguishing traits within the Central Istria wine-growing region. Quantitative International Organisation of Vine and Wine (OIV) descriptors for leaf morphometry and International Commission on Illumination (CIELAB) color values were analyzed on mature leaves of both varieties. Although the varieties showed high qualitative similarity, significant quantitative differences were found in distal vein lengths (N3, N4, N5), inter-vein angles (OIV 607, OIV 608), and the petiole sinus opening (OIV 618). Furthermore, colorimetric analysis revealed that the abaxial surface of ‘Syrah’ leaves was significantly lighter (higher L* value) than that of ‘Merlot’, and Principal Component Analysis confirmed a complete separation between the two cultivars. Research established an objective set of descriptors for differentiating ‘Merlot’ and ‘Syrah’ in this specific terroir, demonstrating the utility of combining ampelometry and colorimetry for accurate varietal characterization.
Ključne riječi
Merlot; Syrah; ampelography; ampelometry; colorimetry
Hrčak ID:
336687
URI
Datum izdavanja:
14.8.2025.
Posjeta: 750 *