Naslov
Individual clonal selection of Croatian native cultivars

Autori
Šikuten, Iva ; Preiner, Darko ; Marković, Zvjezdana ; Andabaka, Željko ; Stupić, Domagoj ; Štambuk, Petra ; Žulj Mihaljević, Maja ; Pejić, Ivan ; Šimon, Silvio ; Karoglan Kontić, Jasminka ; Maletić, Edi

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, 18.06.2018. - 30.06.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Croatia, grapevine, native cultivars, individual clonal selection

Sažetak
Introduction: Croatia has very long viticultural history and more than 120 native grapevine cultivars. Among them there are cultivars that showed very good viticultural and enological potential, thus being in production for a long time. Due to the lack of clonal and sanitary selection in past, native cultivars in Croatia are having high level of intravarietal variability and virus infections. Modern viticulture requires stabile and uniform production characteristics and virus free planting material which can only be obtained through process of clonal selection. The clonal selection in Croatia started with cv. Škrlet in 2000 and was continued on other most important native cultivars from different wine regions. Currently, 12 cultivars are under the selection. Aim: The aim of this paper is to present the results of clonal selection in Croatia which was focused on improvement of productional characteristics of native grapevine cultivar, improvement of planting material quality and sanitary status. Materials and methods: The cultivars included in clonal selection are: Škrlet, Moslavac, Kraljevina, Graševina, Plavac mali, Maraština, Grk, Debit, Plavina, Pošip, Vugava and Žlahtina. The clonal selection was divided into three stages: 1) selection of initial material from old vineyards and virus testing (using ELISA) ; 2) establishment of experimental sites of vegetative progeny of virus free mother plants which were located depending on cultivar production region 3) final evaluation and registration of selected clones. Evaluation of clonal lines in stage two included evaluation of: yield level, cluster characteristics (compactness, mechanical composition, size and weight), chemical composition of must, vigor and susceptibility to pests. During final evaluation of selected clones in stage three, additional micorvinifications was performed including wine chemical and sensory analyses. Selected clones have also undergone analysis of grape aromatics (white cultivars) and polyphenols (red cultivars). Results: High level of intravarietal variability within populations of native cultivars allowed us to select sufficient number of virus free divergent clone candidates in first stage of selection despite the high level of virus infection detected. Vegetative progenies of all virus free mother vines were planted in second phase of selection, to preserve intravarietal variability for potential selection of new clones in future. Considering the importance of specific varieties, as well as divergency detected during process we decided to register different number of clones per variety: Plavac mali 5, Plavina 4, Pošip 4, Graševina 4, Kraljevina 4, Maraština 3, Škrlet 3, Vugava 2 and Debit 1. Three clones of cv. Škrlet are already registered while registration of others is planned during this year. Conclusion: The introduction of new clones will contribute to a sustainable grape and wine production, which can ensure better quality of wine. Moreover, it will contribute to production sustainability of native grapevine varieties in Croatia.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA