terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 The exploitation of Croatian grapevine genetic resources for the breeding of new resistant cultivars 

The exploitation of Croatian grapevine genetic resources for the breeding of new resistant cultivars 

Abstract

Croatian viticulture is mainly based on native grapevine varieties susceptible to various diseases and pests, which leads to unsustainable use of large amounts of pesticides. The sustainable development of viticulture in the future will only be possible by increasing the resistance of the grapevine through the development of new resistant varieties. Breeding programs have been launched in the leading wine-growing countries to develop resistant varieties possessing high-quality levels. Native cultivars from Croatia are not included in the breeding programs of other countries. In 2015 a breeding program was started at the University of Zagreb Faculty of Agriculture. The long-term goal is to develop new varieties suitable for Croatian growing conditions, with stable and durable resistance using native germplasm and other sources of resistance.  

 

Native varieties Grk and  Dišeća ranina were selected as a starting point for the breeding program because they pose female flower type, aiming to develop breeding lines with female flowers. The source of resistance in the program’s first stage is the Panonia variety. After applying molecular markers in the population of seedlings expressing the high level of phenotypic resistance to downy and powdery mildew, several plants were detected that inherited all three resistant gene loci (Rpv3, Rpv12 – downy mildew resistance, Ren3 – powdery mildew resistance) from Panonia and female flower from chosen native varieties. They were included as mother plants in the program’s next step and were crossed to obtain breeding lines with additional resistant gene loci.

DOI:

Publication date: October 4, 2023

Issue: ICGWS 2023

Type: Article

Authors

Darko Preiner1,2*, Ivana Tomaz1,2, Iva Šikuten1,2, Zvjezdana Marković1,2, Petra Štambuk1,2, Jasminka Karoglan Kontić1,2, Domagoj Stupić1, Edi Maletić1,2

1University of Zagreb Faculty of Agriculture, Svetošimunska 25, Zagreb, Croatia
2 Center of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska 25, Zagreb, Croatia

Contact the author*

Keywords

grapevine breeding, genetic resources, resistant varieties

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

How are canned wine drinkers perceived? An investigation involving Swiss nationals and different scenarios of outdoor leisure activities

This study examines how people who consume wine in cans are perceived in terms of their basic personality characteristics, helps understand the role of cultural background on people’s perception, and verify the role played by the consumption context on the perception. Our hypothesis is that prejudice and negative attitudes towards wine in cans might exert a negative effect on the evaluation of people who consume canned wine. To evaluate this hypothesis, the consumption of wine in cans was evoked in four different contexts of use during outdoor leisure activity (beach resort, ski resort, desert safari, and party). In order to examine the effect of culture on subject’s response we use participants from Switzerland, a country where three different cultures, associated with three different languages, cohabit.

Water and nutritional savings shape non-structural carbohydrates in grapevine (Vitis vinifera L.) cuttings

Global changes and sustainability challenge researchers in saving water and nutrients. The response of woody crops, which can be forced at facing more drought events during their life, is particularly important. Vitis vinifera can be an important model for its relevance in countries subjected to climate changes and its breeding, requiring cuttings plantation and strong pruning.

Identification of a stable epi-allele associated with flower development and low bunch compactness in a somatic variant of Tempranillo Tinto

Grapevine cultivars are vegetatively propagated to preserve their varietal characteristics. However, spontaneous somatic variations that occur and are maintained during cycles of vegetative growth offer opportunities for the natural improvement of traditional grape cultivars. One advantageous trait for winegrowing is reduced bunch compactness, which decreases the susceptibility to pests and fungal diseases and favor an even berry ripening.

Grapevine cane pruning extract enhances plant physiological capacities and decreases phenolic accumulation in canes and leaves 

Vine cane extracts are a valuable byproduct due to their rich content of polyphenols, vitamins, and other beneficial compounds, which can affect and benefit the vine and the grapes. This study aims to evaluate the response of grapevine plants to irrigation with water supplemented with a vine cane extract, both at physiology response and phenolic composition in different parts of the plant (root, trunk, shoot, leaf, and berry).
Cane extract was obtained by macerating crushed pruning residues with warm water (5:1) and pectolytic enzymes. Two-year-old potted plants were irrigated with water (Control) while others were irrigated with cane extracts, either at 1:4 (w/v, cane extract/water; T 1:4) or at 1:8 (w/v, cane extract/water; T 1:8).

Anthocyanin content and composition of Merlot grapes under temperature and late pruning conditions 

One of the main aspects of Climate Change is the increase of temperatures during summer and grape maturity period. Physiological processes are influenced by these high temperatures and result in grapes with higher sugar concentration, less acidity and less anthocyanin content among other quality changes. One strategy to deal with the climate change effects is the implementation of late winter pruning to alter the effect of high temperatures during key periods by delays in maturity time.