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.

TAN01780

Active

Rosa L. · Rose

CHRISTIAN EVERS

2 records

Soraya

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

ABZ Aardbeien uit Zaad Holding B.V.

3 records

Tangenta

Terminated

Vicia faba L. · Broad bean

Martin Frauen Olaf Sass

2 records

Solaris

Active

Vitis L. · Grapevine

Norbert Becker

2 records

Sophia

Active

Calluna vulgaris (L.) Hull · Common heather

Edens Creations B.V.

2 records

Sunjiradare

Active

Begonia x tuberhybrida Voss · Tuberous begonia

Yamaguchi Hideki

2 records

Sinzii White

Active

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

EDMOND ROBERT MORGAN

3 records

Sunpararenga

Terminated

Mandevilla sanderi (Hemsl.) Woodson · Brazilian jasmine

Tomoya Misato

2 records

Starlit Sky

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Takanori Kawaguchi

2 records

SAKPXC047

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

2 records

SAKIMP078

Application submitted

Impatiens New Guinea Group · New Guinea Impatiens

SHINJI MINEMURA

2 records

SAKPXC045

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

2 records

Qismas Crunch

Active

Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia

Poul Graff

2 records

RUDLE169

Active

Rudbeckia hirta L. · Black-eyed Susan

Nova Perenne B.V.

2 records

Roesler

Active

Vitis L. · Grapevine

HÖHERE BUNDESLEHRANSTALT UND BUNDESAMT FÜR WEIN UND OBSTBAU

2 records

Pinotin

Active

Vitis L. · Grapevine

Valentin Blattner

3 records

Ráthay

Active

Vitis L. · Grapevine

HÖHERE BUNDESLEHRANSTALT UND BUNDESAMT FÜR WEIN UND OBSTBAU

2 records

Pircinque

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Walther Faedi^^^Gianluca Baruzzi

3 records

Pim Fortuyn

Active

Tulipa L. · Tulip

BULB DIFFERANCE BV

2 records

PENRHUB

Withdrawn

Nemesia Vent. · Nemesia

SIDNEY JAMES JONES|DAVID JAMES JONES

2 records

Nairobi

Active

Vicia faba L. · Broad bean

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

2 records

Methone

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

LE GRAND

Active

Prunus persica (L.) Batsch · Peach

2 records

Loch Maree

Active

Rubus L. subg. Rubus · Blackberry

SCOTTISH CROP RESEARCH INSTITUTE

3 records

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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

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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.