Naslov
Evaluation of Fungus Resistant Grape Varieties in the North-Western Part of Croatia

Autori
Štambuk, Petra ; Preiner, Darko ; Marković, Zvjezdana ; Andabaka, Željko ; Stupić, Domagoj ; Šikuten, Iva ; Tomaz, Ivana ; Maletić, Edi ; Karoglan Kontić, Jasminka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, stručni

Skup
22nd Int'l Geisenheim Conference on Grapevine Propagation

Mjesto i datum
Geisenheim, Njemačka, 28.06.2018. - 30.06.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Croatia, fungus resistant grape varieties, organic acids composition, polyphenolic composition, yield quality

Sažetak
Introduction: Grapevine (Vitis vinifera L.) varieties are susceptible to fungal diseases like powdery mildew (Uncinula necator) and downy mildew (Plasmopara viticola) which are responsible for huge amount of pesticides used in grape production. Climatic conditions in Croatia are suitable for the development of fungal diseases, and that issue is even more severe in the northwestern part. Fungus resistant varieties are currently the only alternative for significant reduction of pesticides used in viticulture production. In order for them to become used for modern wine production, it is necessary to evaluate resistant varieties in different production conditions. Aim: The aim of this paper is to present the results of experiment conducted on twelve fungus resistant grape varieties in the conditions of the northwestern part of Croatia. Materials and methods: The varieties included in this experiment are Merzling, Phoenix, Staufer, Johanniter, Solaris, Regent, Cabernet Cortis, Bianca, Leon Millot, Monarch, Marechal Foch and Chancellor. As far as methods are concerned, the yield quality was determined by analyzing the chemical composition of must which includes the concentration of soluble solids and total acidity. The level of susceptibility to fungal diseases for each variety was determined. The microvinification and wine sensory analyses were performed. Secial focus was given to methyl alcohol content in the produced wines, organic acids composition of grape juice and polyphenolic composition of the berry skin and wine from red grape varieties. Results: The given results showed the level of susceptibility to fungal diseases comparable to other authors. The significant differences among investigated cultivars were noticed in all quality parameters evaluated. Based on these results, the resistant varieties Merzling, Phoenix, Staufer, Johanniter, Solaris, Regent and Cabernet Cortis were added to the list of recommended cultivars for wine production in the wine region West continental Croatia. Conclusion: All parameters determined among all the varieties in this experiment showed that some of them can be considered as a wine variety and become recommended in the northwestern part of Croatia. Even though most of varieties are not completely resistant to the fungal diseases in the given conditions, the application of fungicides could be reduced to minimum. They are specially interesting for organic wine production in this area.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA