Variety traits

Double flowering / Reversion

Reversion virus

In crop production, the term refers to two distinct concepts: a decorative trait characterized by an increased number of petals in flowers, or a dangerous viral disease of blackcurrants that causes sterility.

Mentioned in descriptions 16 231 varieties reference book.

In ornamental horticulture, double flowering is a varietal characteristic expressed by an increased number of petals in a flower to enhance aesthetic appeal. In the case of blackcurrants, double flowering, or reversion, manifests as a viral disease in which flowers are deformed into purple outgrowths, leaves lose their shape, and the plant becomes sterile.

This trait is assessed as a qualitative phenotypic indicator. In ornamental crops, double flowering is recorded during variety trials either visually or by using scoring systems for ornamental quality. Regarding currants, double flowering is considered a critical symptom, the presence of which requires phytosanitary culling of infected specimens.

Resistance of a variety to pathological reversion is determined by the genetic ability to withstand the virus and its vector, the currant bud mite. When choosing planting material for a garden, preference should be given to varieties with proven genetic resistance, as there are no numerical units of measurement for this trait.

Sources6

Breakdown by crop

Rose Double-flowering 1 377 Tulip double flowering 375 Chrysanthemum double-flowering 344 Carnation Double Flowering 336 Double-flowered Lily 164 Carnation double-floweredness 163 Double-flowering — Pelargonium zonale 162 Gerbera double-flowering 142 Dahlia double-flowering 133 Double-flowering in Begonia elatior 90 Double-flowering in Hydrangea macrophylla 88 Double-flowering in Kalanchoe blossfeldiana 77 Pelargonium double flowering 73 Hippeastrum Double-flowering 68 Double-flowering — Pelargonium peltatum 64 Double-flowering in Garden Chrysanthemum 60 Clematis double flowering 59 Azalea double-flowering 56 Double flowers in Impatiens walleriana 54 Freesia double flowers 48 Kalanchoe double flowering 41 Rhododendron doubleness 38 Double-flowering — Tuberous Begonia 38 Double-flowering — Chrysanthemum indicum 32

Found in these crops

Rose 1 840 Tulip 404 Chrysanthemum 348 Carnation 347 Carnation 165 Horseshoe pelargonium 161 Lily 148 Dahlia 141 Gerbera 139 Almond 111 Bigleaf hydrangea 98 Elatior Begonia 88

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.

Don Amador

Active

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Leonardus J. M. van der Knaap

2 records

Dafire

Terminated

Dahlia Cav. · Dahlia

JASK HOLDING APS

2 records

Dokaladki

Active

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Vlielander Ike J.

2 records

Dofuchbalara

Active

Fuchsia L. · Fuchsia

Dümmen Group B.V.

2 records

Dobegicposunris

Active

Begonia boliviensis A. DC. · Bolivian begonia

Dümmen Group B.V.

2 records

DLFTISS1

Terminated

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

2 records

DLFYIN7

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

2 records

Everest

Terminated

Chrysanthemum L. · Chrysanthemum

Cleangro Ltd

2 records

Fibegmissmal

Active

Begonia boliviensis A. DC. · Bolivian begonia

Dümmen Group B.V.

2 records

Creanevavio

Active

Chrysanthemum L. · Chrysanthemum

Pierre Bernard^^^François Bernard

2 records

DL04544

Active

Lilium L. · Lily

De Looff Lily Innovation B.V.

2 records

CHQZ0003

Terminated

Argyranthemum frutescens (L.) Sch. Bip. · Marguerite daisy

Syngenta Crop Protection AG

2 records

Distant Drum

Active

Lilium L. · Lily

Rooijakkers Breezand B.V.

2 records

Diva

Active

Hippeastrum Herb. · Amaryllis

Penning Breeding B.V.

2 records

Cheerio

Terminated

Dianthus caryophyllus L. · Carnation

P.Kooij & Zonen B.V.

2 records

Exotic Sun

Active

Lilium L. · Lily

Pater Bloembollen B.V.

2 records

Exnym

Active

Hippeastrum Herb. · Amaryllis

TON PETER VAN NIEUWKERK

2 records

Dicwitness

Protection expired

Rosa L. · Rose

Dickson Nurseries Ltd

2 records

DICHIRAP

Application submitted

Rosa L. · Rose

MR COLIN DICKSON

2 records

CONDOPINK

Terminated

Petunia Juss. · Petunia

Ushio Sakazaki

2 records

Conaco Bronze

Active

Chrysanthemum L. · Chrysanthemum

PARATY B.V.B.A

2 records

DGYPMILSII

Active

Gypsophila paniculata L. · Baby's-breath

Gavriel Danziger

2 records

Elodie

Active

Lilium L. · Lily

Testcentrum voor Siergewassen B.V.

2 records

Devon Octavia

Active

Dianthus L. · Carnation

Whetman Plants International Limited

2 records

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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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.