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.

Zodasa

Application submitted

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

van Kleinwee Theodorus Cornelis Maria|Hoorn, NL

3 records

Zosa

Active

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

van Kleinwee Theodorus Cornelis Maria|Hoorn, NL

3 records

Zolrolo

Application submitted

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

van Kleinwee Theodorus Cornelis Maria|Hoorn, NL

3 records

Zonadarolo

Application submitted

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

Syngenta Seeds B.V.

3 records

Zonabriscal

Application submitted

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

van Kleinwee Theodorous Cornelis Maria|Hoorn, NL

3 records

WSU 1605

Active

Rubus idaeus L. · Red raspberry

Washington State University Puyallup Research and Extension Center

3 records

Zonascarora

Application submitted

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

Syngenta Seeds B.V.

3 records

Zolavbo

Application submitted

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

van Kleinwee Theodorus Cornelis Maria|Hoorn, NL

3 records

Wizard

Active

Vicia faba L. · Broad bean

Wherry and Sons Ltd

5 records

Tattoo

Terminated

Vicia faba L. · Broad bean

Norddeutsche Pflanzenzucht

4 records

Sunjiraore

Active

Begonia x tuberhybrida Voss · Tuberous begonia

Yamaguchi Hideki

4 records

Toscane

Active

Lavandula stoechas L. · French lavender

Koning Smit Holding N.V.

3 records

Sunjiraho

Active

Begonia x tuberhybrida Voss · Tuberous begonia

Yamaguchi Hideki

3 records

Sinzii Blueish

Active

Limonium perezii (Stapf) F. T. Hubb. x L. sinuatum (L.) Mill

EDMOND ROBERT MORGAN

3 records

Spirit

Active

Streptocarpus x hybridus Voss · Cape primrose

Fleischle Gartenbau GbR

3 records

SAXZ0006

Active

Saxifraga x arendsii Engl. · Arends saxifrage

Syngenta Seeds B.V.

3 records

SAKPXC044

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

3 records

SAXZ0009

Active

Saxifraga x arendsii Engl. · Arends saxifrage

Syngenta Seeds B.V.

3 records

SAKPXC039

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

3 records

SAKPXC027

Active

x Petchoa J. M. H. Shaw · Petchoa

TSUKAHARA JUN

3 records

SAXZ0008

Active

Saxifraga x arendsii Engl. · Arends saxifrage

Syngenta Seeds B.V.

3 records

Redcino

Active

Dianthus caryophyllus L. · Carnation

OSCAR HASEGAWA

3 records

Rosa Linda

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

GULF COAST RES.AND EDUC.CENTER

5 records

SAKPXC043

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

3 records

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Diseases

Powdery mildew 33 570
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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.