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.

Regina

Withdrawn

Gerbera L. · Gerbera

Boerlage, P.

2 records

Regal Seedless

Application submitted

Vitis vinifera L. · Common grape vine

Phil Ellis, Arc Infruitec Nietvoorbij

2 records

RIBOL

Active

Vitis L. · Grapevine

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

Radziejowa

Active

Rubus idaeus L. · Red raspberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy (The National Institute of Horticultural Research)

6 records

Ravat 6

Active

Vitis L. · Grapevine

INCONNU (FR)

2 records

Pyramid

Terminated

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

Limagrain Advanta Nederland BV (NL)

2 records

Pokusa

Active

Rubus L. · Blackberry

Dr. Jan Danek c/o Instytutu Sadownictwa i Kwiaciarstwa Brzezna Sp. z o.o.

3 records

Popany

Application submitted

Vicia benghalensis L. · Purple vetch

Seed Technology & Marketing Pty Ltd

4 records

Panon

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

Paladyn

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

Noumea

Active

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

Agri Obtentions SA (FR)/Institut National de la Recherche Agronomique (FR)

2 records

NPCW22381

Active

Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia

Guido von Tubeuf

2 records

Muscaris

Active

Vitis vinifera L. · Common grape vine

Land Baden-Wurttemberg, Germany

3 records

Maxim

Active

Allium porrum L. · Leek

Graines Gautier SA (FR)

2 records

MARSELAN

Active

Vitis L. · Grapevine

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

Melody

Application submitted

Fragaria L. · Strawberry

JAMES HUTTON LTD

2 records

Melkior

Active

Allium cepa L. var. aggregatum G. Don · Shallot

Agri-Obtentions S.A., Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

3 records

Malle

Active

Solanum lycopersicum L. · Tomato

Maia Raudseping 90%, Ingrid Bender 10%

3 records

Magdusia

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Marian Lisowski

4 records

Marilyn

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Zakład Ogrodniczo-Szkółkarski Ryszard Majewski

4 records

Mara de Bois

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Jacques Marionnet G.F.A.

2 records

Laurot

Active

Vitis L. · Grapevine

Doc. Ing. Miloš Michlovský, CSc. (CZ)

3 records

Lady

Active

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

Serasem, FR

2 records

Levitage

Active

Vitis vinifera L. · Common grape vine

Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau Weinsberg

3 records

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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.