Diseases

Grey mold

Botrytis cinerea

Grey mold is a polyphagous fungal disease manifesting as watery spots and a characteristic grey fuzzy growth on plant organs. The disease causes tissue softening and decay, often affecting plants during the flowering or ripening stages.

Mentioned in descriptions 7 316 varieties reference book.

The pathogen is a facultative parasite that develops on living tissues, weakened plants, and plant debris. Externally, the pathology manifests as the appearance of a grey fuzzy growth consisting of fungal mycelium and spores, as well as watery spots leading to tissue softening and wilting of the affected areas.

Pathogen activity depends directly on environmental conditions. The disease develops most aggressively at temperatures between +15 and +25°C and high relative humidity above 80–90%. The presence of free moisture, high planting density, mechanical damage, and physiological weakness of the plants significantly contribute to the spread of the infection.

Varietal resistance is complex in nature and is determined by the morphological characteristics of the plants, their chemical composition, and ontogenetic differences. In the state variety testing system, phytopathological assessment is conducted on a scale from 0 to 5 points by analyzing the natural infection background, which allows for the identification of genotypes that are resistant, tolerant, or susceptible to the pathogen.

Sources10

Breakdown by crop

Grey mold of grapevine 1 060 Grey Mold of Grapevine 544 Gray Mold of Garden Strawberry 160 Grey Mold of Sunflower 122 Grey mold of raspberry 36 Strawberry gray mold 30 Grey mold of zonal geranium 29 Tomato gray mold 29 Botrytis Blight of Lily 20 Chocolate Spot — Faba Bean 20 Grey mold — small-seeded faba bean 18 Grey Mold of Rose 17 Grey mold of pepper 13 Botrytis blight of Hydrangea macrophylla 12 Grey Mold of Lettuce 11 Grey mold of chrysanthemum 11 Grey Mold of Rapeseed 11 Grey Mold of Sweet Cherry 11 Gray mold of raspberry and blackberry 9 Peach Gray Mold 9 Petchoa Botrytis blight 9 Tulip Botrytis Blight 9 Gray mold of pea 9 Gray Mold of Poinsettia 8

Found in these crops

Grapevine 1 063 Common grape vine 538 Garden strawberry 161 Sunflower 68 Red raspberry 37 Strawberry 31 Horseshoe pelargonium 28 Tick Bean 28 Tomato 27 Broad bean 24 Lily 22 Rose 18

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.

Humagne rouge

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Irsay Oliver ISK

Terminated

Vitis L. · Grapevine

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Hot Chocolate

Active

Dahlia Cav. · Dahlia

Dongen

1 record

Italia Rubi

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Ilgiai

Terminated

Pisum sativum L. · Pea

Lietuvos agrarinių ir miškų mokslų centro filialas Žemdirbystės institutas

1 record

Huxelrebe

Active

Vitis vinifera L. · Common grape vine

LAND RHEINLAND OPPENHEIM| Land Rheinland-Pfalz, vertreten durch DLR Rheinhessen-Nahe-Hunsrueck Dienstsitz Oppenheim

2 records

Grenache blanc

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Gueuche noir

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Granita N

Active

Vitis vinifera L. · Common grape vine

Institut National de la Recherche Agronomique (FR)/Sicarex Beaujolais (FR)

1 record

Gruner Veltliner

Active

Vitis vinifera L. · Common grape vine

Bezotosna Mar'iana Ihorivna

1 record

Gros Meslier

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Helios

Active

Vitis vinifera L. · Common grape vine

Dr. Norbert Becker im Staatl. Weinbauinstitut

2 records

Grenache gris

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Gramon

Active

Vitis vinifera L. · Common grape vine

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

GL Maralena

Active

Vicia faba L. · Broad bean

Saatzucht Gleisdorf

2 records

GL Arabella

Terminated

Vicia faba L. var. equina St.-Amans · Horse bean

Saatzucht Gleisdorf

1 record

Grolleau gris

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Grassen

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Gros vert

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Garbesso

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Grand Noir N

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Gros Courbu

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Gamay Fréaux

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Gouget

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

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Diseases

Powdery mildew 33 570
Fusarium wilt and blight 29 887
Viral mosaic diseases 22 022
Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

All terms →

Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.