scholarly journals Content of trans-resveratrol in leaves and berries of interspecific grapevine (Vitis sp.) varieties

2009 ◽  
Vol 26 (Special Issue) ◽  
pp. S13-S17 ◽  
Author(s):  
P. Bábíková ◽  
N. Vrchotová ◽  
J. Tříska ◽  
M. Kyseláková
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Fungal Diseases ◽  
Uncinula Necator ◽  
Botryotinia Fuckeliana

The aim of this project was to study changes in the content of <i>trans</i>-resveratrol in berries and leaves of grapevine (<i>Vitis</i> sp.) infested by fungal diseases, especially by <i>Botryotinia fuckeliana</i> Whetzel, called as grey mildew, <i>Plasmopara viticola</i> (Berk. & M.A. Curtis) Berl & De Toni, called downy mildew and <i>Uncinula necator</i> (Schw.) Burr, called powdery mildew. In our experiments two white and two blue varieties were used. Contents of <i>trans</i>-resveratrol were determined in healthy and infested leaves and in healthy berries. Infested leaves of white varieties contained more <i>trans</i>-resveratrol than those of blue varieties. The content of <i>trans</i>-resveratrol in berries was lower than that in leaves.

scholarly journals Chemical Control of Grapevine Main Pathogens under the Climate Conditions of Baia

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Lucia MIHALESCU ◽  
Oana MARE ROSCA ◽  
Zorica VOSGAN ◽  
Anca DUMUTA ◽  
Mirela CORDEA ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Chemical Control ◽  
Plasmopara Viticola ◽  
Resistant Variety ◽  
Uncinula Necator ◽  
Climate Conditions ◽  
Chemical Protection ◽  
Baia Mare ◽  
Frequency Intensity

The experiences were performed in the Tautii Magheraus locality, located at 3 km from Baia Mare. Five variety of grapevine were studied: Cramposie , Feteasca regala , Muscat Ottonel  , Perla de Zala and Italian Riesling . The resistance of the cultivated grapevine varieties against the attack of the main phytopathogenic fungi: Plasmopara viticola , Uncinula necator , Botryotinia fuckeliana  , in terms of the 2011 year, was studied. In order to assess the resistance of the grapevine varieties against the phytopathogenic agents attack, the frequency, intensity and degree of attack were determined. The most sensitive to the attack of downy mildew on leaves was the Italian Riessling , with a degree of attack of 71.5%; and the most resistant variety was Perla de Zala , with a degree of attack of 26%. The most resistant to the attack of grape powdery mildew on leaves was the Muscat Ottonel  variety, with a degree of attack of 8.1%; and the most sensitive was the Italian Riesling variety with 18.1%. In case of the attack of downy mildew on grapes, the most sensitive was the Italian Riesling  variety with a degree of attack of 11.5%; and the most resistant was Perla de Zala with 2.5%. During the vegetation of the 2011 year, the chemical protection was performed with fungicides that were administered by seven sprayings.

Spectral characterization of fungal diseases downy mildew, powdery mildew, black-foot and Petri disease on Vitis vinifera leaves

2021 ◽  
Vol 42 (15) ◽  
pp. 5680-5697
Author(s):  
Pâmela A. Pithan ◽  
Jorge R. Ducati ◽  
Lucas R. Garrido ◽  
Diniz C. Arruda ◽  
Adriane B. Thum ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Vitis Vinifera ◽  
Downy Mildew ◽  
Fungal Diseases ◽  
Spectral Characterization ◽  
Petri Disease ◽  
Black Foot

scholarly journals Potential of genetic resistance of new table grape hybrids to fungal pathogens

2021 ◽  
Vol 34 ◽  
pp. 02001
Author(s):  
Elena Ilnitskaya ◽  
Marina Makarkina ◽  
Valeriy Petrov
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Resistance Genes ◽  
Dna Markers ◽  
Fungal Pathogens ◽  
Genetic Resistance ◽  
Plasmopara Viticola ◽  
Table Grape ◽  
Table Grapes ◽  
Hybrid Forms

Downy mildew (Plasmopara viticola) and powdery mildew (Erysiphe necator) are the most common and economically significant fungal diseases in vineyards. The task of this work is to study the genotypes of new promising hybrid forms of table grapes for the presence of resistance genes to downy mildew (Rpv10 and Rpv3) and powdery mildew (Ren9) using DNA-markers. The study was carried out on table grape hybrids under the working names Agat dubovskiy, Akelo, Arabella, Artek, Dubovskiy rozovyi, Gamlet, Ispolin, Kishmish dubovskiy, Kurazh, Pestryi, Valensiya and registered variety Liviya. The studied genes were analyzed using markers UDV305 and UDV737 (Rpv3), GF09-46 (Rpv10), CenGen6 (Ren9). The following cultivars were used as reference genotypes: Saperavi severnyi (carries Rpv10 gene) and Regent (Rpv3 and Ren9). It was established that Rpv3 gene is carried by hybrids Kishmish dubovskiy, Agat dubovskiy, Kurazh, Valensiya, Akelo, Gamlet, Dubovskiy rozovyi, Pestryi. Ren9 gene was found in Artek, Agat dubovskiy, Kurazh, Ispolin, Valensiya, Arabella, Gamlet, Dubovskiy rozovyi, Pestryi. The Rpv10 gene was not detected in any of the analyzed grapevine samples. genotypes Agat dubovskiy, Kurazh, Gamlet, Dubovskiy rozovyi, Pestryi, Valensiya carry Rpv3 and Ren9 genes simultaneously. These grapevines have an elegant bunch and large berries that are attractive to consumers.

scholarly journals Susceptibility of Cold-Climate Wine Grape Cultivars to Downy Mildew, Powdery Mildew, and Black Rot

Plant Disease ◽  
2017 ◽  
Vol 101 (7) ◽  
pp. 1077-1085 ◽  
Author(s):  
David S. Jones ◽  
Patricia S. McManus
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Management Strategies ◽  
Plasmopara Viticola ◽  
Cold Climate ◽  
Black Rot ◽  
Wine Grape ◽  
Plant Host ◽  
Northern United States ◽  
Grape Cultivars

Lack of knowledge regarding the susceptibility of cold-climate hybrid wine grape cultivars may be leading to the overuse of fungicides and underutilization of plant host resistance to combat disease in the northern United States. To provide new insights on diseases of cold-climate cultivars and to update management recommendations, disease was evaluated in three vineyards containing eight cultivars that were not sprayed with fungicides in 2015 and 2016. Disease severity or incidence of downy mildew (Plasmopara viticola), powdery mildew (Erysiphe necator), and black rot (Guignardia bidwellii) were measured from bud break until 2 weeks after harvest. Cold-climate cultivars ranged widely in susceptibility to different diseases and, although several cultivars were relatively resistant to two diseases, no cultivar was highly resistant to all three diseases. Additionally, a difference between foliar and fruit susceptibility for all three diseases was noted in several cultivars. These data provide a foundation for developing low-spray and certified organic disease management strategies for cold-climate wine grape cultivars based on susceptibility to disease.

scholarly journals Testing of paraffin oil efficiency against grape powdery mildew in Eger wine region

2016 ◽  
pp. 73-80
Author(s):  
Xénia Pálfi ◽  
Dénes Bisztray ◽  
Szabolcs Villangó ◽  
Zita Pálfi ◽  
Tamás Deák ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Field Trials ◽  
Intensity Of Infection ◽  
Erysiphe Necator ◽  
Regular Treatment ◽  
Paraffin Oil ◽  
Wine Region ◽  
Grape Varieties

The aim of the present study was to examine the efficiency of paraffin oil against powdery mildew in Eger wine region. The experiment has been carried out in 2013 and 2014 with Chardonnay and Kékfrankos grape varieties, which have different resistance against powdery mildew. The effectiveness of the oil was examined on leaves and clusters (frequency and intensity). This oil was effective against Erysiphe necator infection on field trials in Chile and Brazil. The spread of downy mildew (Plasmopara viticola) was also inhibited by this material in some experiments conducted in Spain and France. The differences between oil treatments represented the sensitivity of the grape varieties in accordance with the applied dosages. The oil was effective against powdery mildew with different extent as a result of the so called ”vintage effect”. In 2013, the treatment of the highest dosage (D3) didn’t differed significantly in frequency and intensity of infection from the regular treatment (clusters of Kékfrankos, leaves of Chardonnay). In 2014, the oil was not so effective against powdery mildew compared to 2013. No remarkable differences were detected between the treatments due to the strong pressure of powdery mildew. Furthermore, no any effect of the lowest dosage (D1) was detected in the case of the sensitive clusters of Chardonnay and leaves of Kékfrankos in both experimental years. In summary, the oil treatment has an effect against powdery mildew, however this efficiency largely depends on the vintage characteristics and the pressure of powdery mildew. Further investigations are neccessary, for example field trials with combinations of other sprays. The oil can be useable as fungicide with proper care in eco-friendly integrated and bio (ecological) viticulture.

scholarly journals Behavior of Vine Varieties Resistant to Fungal Diseases in the Somontano Region

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 738
Author(s):  
José Casanova-Gascón ◽  
Carla Ferrer-Martín ◽  
Antonio Bernad-Eustaquio ◽  
Andrea Elbaile-Mur ◽  
José M. Ayuso-Rodríguez ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Principal Component ◽  
Climatic Conditions ◽  
Fungal Diseases ◽  
Real Field ◽  
Sauvignon Blanc ◽  
Growing Seasons ◽  
Resistant Varieties ◽  
Bunch Rot

The vine is highly susceptible to numerous fungal diseases, the incidence and severity of which are increasing because of climate change. To fight them, large amounts of phytosanitary products are generally used, although they entail important economic and environmental costs. The new fungus resistant vine varieties (PIWI) constitute one of the most active lines of research on plant material in viticulture and are regarded as a viable solution to respond to the requirements of European Directive 2009/128/EC. In the present work, the evolution and impact of the three main fungal diseases (powdery mildew, downy mildew and botrytis bunch rot) were monitored in plots in the Somontano region (Huesca, Spain), comparing three PIWI varieties (Sauvignon Kretos, Souvignier gris and Muscaris) with a susceptible control variety (Sauvignon blanc) in real field growing conditions over three successive years (2016–2018). The main ampelographic characters of each variety were studied and a weekly follow-up was carried out to track the development of each disease, relating it to climatic variables. Regardless of the climatic conditions (one of the growing seasons was rainy and the other two corresponded to dry years, with differences in the distribution of rainfall), the three PIWI varieties hardly presented any symptoms, demonstrating a high resistance to downy mildew and powdery mildew and even to botrytis. Principal component analysis results pointed to a differential behavior versus the control and treated Sauvignon blanc plants in terms of disease resistance. Based on production results, despite the youth of the plantation, the excellent potential of Sauvignon Kretos variety was observed. However, from the analysis of the quality of wine obtained in microvinifications from these fungus resistant varieties in the second and third year, the one obtained from Muscaris seemed to have the best organoleptic properties. Apart from environmental considerations, given that these fungus resistant varieties can significantly contribute to the sustainability of wineries, they may also respond to the demand of consumers who want zero-pesticide products or of the supporters of ecological products adjusted to European regulations.

scholarly journals EVALUATION OF GRAPEVINE RESISTANCE TO DOWNY AND POWDERY MILDEW IN ‘REGENT’ × ‘BOĞAZKERE’ HYBRID POPULATION SEGREGATING FOR RESISTANCE GENES

2019 ◽  
Vol 18 (1) ◽  
pp. 181-188
Author(s):  
Mina Shidfar ◽  
Murat Akkurt ◽  
Arif Atak ◽  
Ali Ergül ◽  
Gökhan Söylemezoğlu
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Resistance Genes ◽  
Marker Assisted Selection ◽  
Plasmopara Viticola ◽  
Hybrid Population ◽  
Breeding Programs ◽  
The World ◽  
Genomic Regions ◽  
New Cultivars

Downy (Plasmopara viticola) and powdery mildew (Erysipha necator) is known as one of the most mischievous diseases for viticulture in Turkey as well as in the world. Therefore breeding studies play an important role for development of new cultivars resistant against fungal diseases. The aim of this research was to develop new F1 population and evaluate the resistance of hybrids to powdery and downy mildew via marker assisted selection (MAS). Resistant ‘Regent’ and susceptible ‘Boğazkere’ varieties were used to obtain hybrid population. A total of 6 markers belonging to 3 genomic regions were used for DNA based selection. Four SSR (UDV15, VMCNG2f12, VMC7F2 and UDV305) and two SCAR (ScORNA7-760 and ScORN3-R) markers which were developed to the resistance loci of Rpv3 and Ren3 were used for DNA based selection. The results were evaluated together with powdery mildew inoculation observations. When inoculation observations and MAS were evaluated, genotypes resistant, tolerant and susceptible to powdery and downy mildew were identified. Especially 16 genotypes identified as resistant to powdery mildew, can be used in future breeding programs.

scholarly journals Susceptibility to downy mildew (Plasmopara viticola) and powdery mildew (Erysiphe necator) of differentVitiscultivars and genotypes

2017 ◽  
Vol 32 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Arif Atak ◽  
M. Akkurt ◽  
Z. Polat ◽  
H. Çelik ◽  
K. A. Kahraman ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Erysiphe Necator
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