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@INPROCEEDINGS{BITSADZE:1050593,
author = {BITSADZE, Nana and GADOURY, David M. and CADLE-DAVIDSON,
Lance and KHAZARADZE, Rusudan and KIKILASHVILI, Shengeli and
KIKVADZE, Maia and CHIPASHVILI, Ramaz and
MAMASAKHLISASHVILI, Londa and UJMAJURIDZE, Levan and
KEVKHISHVILI, Mariam and GELASHVILI, Elisabed and
TCHABASHVILI, Giorgi and Kiladze, Emeliane and MAGHRADZE,
David},
title = {{PRELIMINARY} {FIELD} {STUDIES} {OF} {RESISTANCE} {OF}
{GEORGIAN} {GRAPEVINE} {GERMPLASM} {TOPOWDERY} {MILDEW}
({ERYSIPHE} {NECATOR})},
reportid = {FZJ-2026-00345},
isbn = {https://ives-openscience.eu/34775/},
pages = {1-5},
year = {2023},
abstract = {Erysiphe necator Schwein is a fungus that causes grapevine
powdery mildew. It is one of the most problematicpathogens
attacking Vitis vinifera L. The pathogen infects all green
parts of the plant and reduces grape yieldand quality. The
suppression on mildew-susceptible cultivars requires
intensive use of fungicides againstpathogen, which has
negative impact on the environment and human health. The
identification, quantification,and use of host resistance is
therefore a research priority favored by grape growers,
genetics, breeders andwinemakers, governments, regulatory
and grant agencies.At the end of 19th century, the breeding
programs were carried out by crossing V. vinifera with
resistantspecies, and in particular with North American
Vitis that co-evolved with the pathogen. However,
obtainedhybrids were mostly unsuitable for the production of
high-quality wines, due to their unpleasant foxy
aromas.Nearly all major cultivars of V. vinifera exhibit
little evidence of strong genetic resistance against E.
necator, withthe exception of ontogenic resistance that
appears to be a universal trait. However, recent studies
haveindicated that certain V. vinifera cultivars of Caucasus
and Central Asian origin exhibit an unusual degree of
fieldresistance to powdery mildew. Some Georgian V. vinifera
accessions from the South Caucasus have beenreported to be
resistant to E. necator and to have no known genetic
relationship to non-vinifera species. Theaim of our
preliminary research was to quantitatively measure the field
resistance of local Georgian varieties topowdery mildew, as
a necessary first step to more in-depth phenotyping and
genetic studies.},
month = {Jul},
date = {2023-07-17},
organization = {International Viticultural $\&$
Enology Society - Conference Series
(vine $\&$ wine), Ithaca, NY (USA), 17
Jul 2023 - 21 Jul 2023},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
doi = {https://ives-openscience.eu/wp-content/uploads/2023/07/Bitsadze_Field-observation.pdf},
url = {https://juser.fz-juelich.de/record/1050593},
}