NOS Borin
ActiveSecale cereale L. · Rye
Nordic Seed Germany
DK
4 records
Diseases
Powdery mildew
Erysiphales
Powdery mildew is a fungal disease manifesting as a white web-like coating on plant organs, leading to tissue necrosis, fruit deformation, and significant crop losses.
Mentioned in descriptions 33 570 varieties reference book.
Powdery mildew is caused by ectoparasitic fungi of the order Erysiphales, which develop primarily on the surface of leaves, shoots, and fruits. The initial white web-like coating eventually densifies into "powdery" cushions, upon which fungal fruiting bodies may form as dark spots. As a result of the infection, tissues turn yellow and become necrotic, fruits may crack, and leaves drop prematurely.
The intensity of disease development depends on a complex of factors: high relative humidity, moderate temperatures, the presence of dense canopy, and excessive nitrogen nutrition. Risks increase with alternating dry and wet weather. The harmfulness of the disease is expressed in a reduction of the leaf assimilation area, deterioration of crop quality, and a decrease in the general winter hardiness of crops.
Assessment of variety resistance is conducted under field conditions at various stages of vegetation, most often during the full heading phase. To classify the degree of infection, scoring systems or intensity scales in percentages are used, where varieties with up to 10% infection are considered highly resistant (R), 11 to 40% as moderately resistant (M), and more than 41% as susceptible (S). Variety resistance is ensured by genetic mechanisms that prevent colonization by the pathogen or limit the development of its mycelium.
Breakdown by crop
Powdery Mildew of Soft Wheat
1 157
Apple Powdery Mildew
1 127
Powdery mildew of cucumber
1 031
Powdery mildew of rose
785
Powdery Mildew of Barley
758
Powdery mildew of melon
670
Tomato powdery mildew
351
Powdery mildew of zucchini
333
Powdery mildew of strawberry
281
Powdery mildew of pea
268
Powdery mildew of triticale
241
Powdery mildew of lettuce
231
Powdery mildew — sugar beet
186
Powdery mildew of pepper
185
Gooseberry powdery mildew
176
Powdery mildew of oats
176
Apple powdery mildew
153
Powdery mildew — durum wheat
151
Powdery Mildew of Black Currant
143
Grape Powdery Mildew
110
Peach Powdery Mildew
81
Powdery mildew of rye
76
Powdery Mildew of Bigleaf Hydrangea
73
Verbena powdery mildew
69
Found in these crops
Varieties that feature this in their description
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Oregon Sugar Pod
ActivePisum sativum L. · Pea
Oregon State University
SI
5 records
NOS Medley
ActiveTriticum aestivum L. · Bread wheat
Nordic Seed A/S
DK
4 records
Nirvin
ActiveCapsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Nesluchovskyi
ActiveRibes uva-crispa L. · Gooseberry
V. Kopan c/o Institute of Horticulture Research Centre
EE
3 records
Ninti
ActiveTriticum aestivum L. · Bread wheat
Agro Bio Seed Ltd, BG
BG
3 records
Nemesis
TerminatedTriticum durum Desf. · Durum wheat
Eurodur S.A.
FR
5 records
Nagradowicki
ActiveHordeum vulgare L. · Barley
Poznanska Hodowla Roslin Sp. z o.o
PL
4 records
Neilina
ActiveCucumis sativus L. · Cucumber
Paul Degreef
UA
5 records
Ocana
ActiveCucumis sativus L. · Cucumber
Nunhems B.V.
NL
5 records
Myamara
ActiveCucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Novial
ActiveLolium x hybridum Hausskn. · Hybrid ryegrass
RAGT 2N S.A.S
FR
6 records
Nemagone
ActiveMedicago sativa L. · Alfalfa
AGRIPRO SEEDS
IT
6 records
Nectarlove
ActivePrunus persica (L.) Batsch · Peach
Arsene Maillard Laurence Maillard
FR
5 records
Mv Tectus
ActiveHordeum vulgare L. · Barley
Ottó Veisz^^^Ildikó Karsai^^^Gyula Vida^^^Zoltán Bedő^^^László Láng^^^Klára Mészáros^^^Mónika Cséplő
HU
5 records
Muriello
ActiveLolium multiflorum Lam. · Italian ryegrass
Joost Baert c/o ILVO - Plant-Toegepaste Genetica en Veredeling
DE
4 records
Novira
ActiveHordeum vulgare L. · Barley
Claus Einfeldt
CZ
4 records
Mv Laura
ActiveTriticum aestivum L. · Bread wheat
Bedoe Zoltan / Lang Laszlo / Veisz Otto / Vida Gyula / Szunics Laszlo / Karsai Ildiko / Rakszegi Mariann / Meszaros Klara / Szuecs Peter / Szunics Laszlone
HU
4 records
Mv Ménes
ActiveAvena sativa L. · Oat
Zoltán Bedő^^^László Láng^^^Ottó Veisz^^^Gyula Vida^^^Szilvia Bencze^^^Balázs Varga
HU
5 records
Mv Matador
TerminatedTriticum aestivum L. · Bread wheat
Balla Laszlo / Bedoe Zoltan / Lang Laszlo / Szunics Laszlo / Karsai Ildiko / Szunics Laszlone / Vida Gyula
HU
3 records
Mv Martina
TerminatedTriticum aestivum L. · Bread wheat
Bedoe Zoltan / Lang Laszlo / Balla Zoltan / Szunics Laszlo / Karsai Ildiko / Szunics Laszlone / Veisz Otto / Vida Gyula
HU
4 records
MV Kokárda
Protection expiredTriticum aestivum L. · Bread wheat
Zoltán Bedő^^^László Láng^^^Ottó Veisz^^^Gyula Vida^^^Klára Mészáros^^^Mariann Rákszegi^^^Ildikó Karsai
HU
5 records
Mv Káplár
ActiveTriticum aestivum L. · Bread wheat
Zoltán Bedő^^^László Láng^^^Ottó Veisz^^^Gyula Vida^^^Mariann Rákszegi^^^Klára Mészáros^^^Ildikó Karsai^^^Zoltán Bognár
HU
5 records
Muna
ActiveMalus domestica (Suckow) Borkh. · Apple
Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy
PL
7 records