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.

NOA 151622

Active

Rosa L. · Rose

Reinhard Noack

2 records

Royal Pauline

Protection expired

Bouvardia Salisb. · Bouvardia

Joannes Maria Franciscus De Jong

2 records

Meige-Kanusar

Terminated

Rosa L. · Rose

ALAIN ANTOINE MEILLAND (FR)

2 records

Wake-up

Terminated

Gerbera L. · Gerbera

FLORIST HOLLAND B.V.

2 records

RTPIV790-01

Active

Paeonia lactiflora x Paeonia delavayi

Rat Thierry

2 records

YBAZ-2147

Active

Rhododendron L. · Azalea

Wendy Bergman

2 records

Power White 2

Active

Nigella damascena L. · Love-in-a-mist

Freek Zandbergen

2 records

Korsilu 15

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

2 records

OHAR 01245

Terminated

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

Dr Andrew Bernuetz, Oasis Horticulture Pty Ltd

3 records

Power Pink 2

Active

Nigella damascena L. · Love-in-a-mist

Freek Zandbergen

2 records

Korsilu 09

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

2 records

Kj 2002-0517

Terminated

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Knud Jepsen A/S

2 records

TRA39-65

Active

Clematis L. · Clematis

Pépinières Travers S.A.R.L.

2 records

F.C. Moree

Active

Ostrya carpinifolia Scop. · European hop-hornbeam

Bart van de Sluis

2 records

Rtpiv791-01

Active

Paeonia lactiflora x Paeonia delavayi

Thierry Rat

2 records

Darwin's Pink Indulgence

Active

Delphinium L. · Larkspur

Roelof Van Tol Benjamin

2 records

ET DLP 17 10

Active

Delphinium x belladonna hort. ex Bergmans · Belladonna delphinium

Noordhuis Bart / Bisschop Elisabeth

2 records

Rock 'N Roll

Active

Hippeastrum Herb. · Amaryllis

Hadeco (Pty) Ltd.

2 records

ET DLP 17 03

Active

Delphinium x belladonna hort. ex Bergmans · Belladonna delphinium

Noordhuis Bart / Bisschop Elisabeth

2 records

RLH1 8P1

Active

Rhododendron L. · Azalea

Lisa Jones Head^^^Robert Harold Head

3 records

Kirimaji Double Pink Vein

Terminated

Petunia Juss. · Petunia

Takeshita Daigaku|WATANABE SAORI

2 records

Mona Lisa Sunny

Application submitted

Chrysanthemum L. · Chrysanthemum

Cornelis W. Dekker

2 records

KUPINPA'

Active

Dasiphora fruticosa (L.) Rydb. subsp. fruticosa · Shrubby cinquefoil

Kuijf Hendricus Jacobus Maria

3 records

Korsilu 10

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

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.