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.

Violet Prana

Active

Tulipa L. · Tulip

Q.J. Vink & Zn. B.V.

1 record

White Bridge

Active

Tulipa L. · Tulip

Marax Tulips V.O.F.

1 record

Vytautas Virkau

Terminated

Lophospermum scandens D. Don · Creeping gloxinia

Aleksandro Stulginskio universitetas

1 record

Whipped Cream

Active

Tulipa L. · Tulip

C.Th. Ammerlaan en Zn. B.V.

1 record

Violet Pranaa

Active

Tulipa L. · Tulip

Q.J. Vink & Zn. B.V.

1 record

Voicemail

Active

Tulipa L. · Tulip

Marax Rights B.V.

1 record

Wanda

Terminated

Matthiola incana (L.) R. Br. · Hoary stock

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

1 record

Vuelta

Active

Tulipa L. · Tulip

Bola Tulpenveredeling

1 record

Verona Love

Active

Tulipa L. · Tulip

A.C.M. Smit en Zn. Bloembollenkwekerij

1 record

Veria

Terminated

Chrysanthemum x morifolium Ramat. · Florist's daisy

PIETERS| Dirk Pieters

1 record

Veresnevyi Biser

Terminated

Chrysanthemum L. · Chrysanthemum

Zavidova Liudmyla Hnativna, Horobets Vasyl Fedorovych,

2 records

VERIA DARK

Protection expired

Chrysanthemum indicum L. · Indian chrysanthemum

Dirk Pieters (BE)

1 record

VERIA

Terminated

Chrysanthemum indicum L. · Indian chrysanthemum

Georges Pieters (BE)/Dirk Pieters (BE)

1 record

Vermont

Active

Tulipa L. · Tulip

Mellema-Versteeg B.V.

1 record

White

Terminated

Impatiens walleriana Hook. f. · Busy Lizzie

Ball FloraPlant

1 record

Viktoriia

Withdrawn

Chrysanthemum x morifolium Ramat. · Florist's daisy

Misiura Oleksandra Vasylivna, Andriushenkova Zoia Pavlivna,

2 records

VDB Obelisk

Active

Corylus colurna L. · Turkish Hazel

Information not available - Contact NL authorities

3 records

Ventoux

Protection expired

Chrysanthemum L. · Chrysanthemum

C.B.A Research B.V.

1 record

VAYRO

Active

Prunus dulcis (Mill.) D. A. Webb · Almond

IRTA (G. CATALUÑA)

2 records

Vaya Con Dios

Active

Tulipa L. · Tulip

Vertuco B.V.

1 record

Videns`kyi Bal

Terminated

Chrysanthemum L. · Chrysanthemum

Zavidova Liudmyla Hnativna, Horobets Vasyl Fedorovych,

2 records

Wave

Withdrawn

Narcissus L. · Daffodil

Leenen en Zoon

1 record

Vanille coupe

Active

Tulipa L. · Tulip

Bloembollenkwekerij Firma Veul

1 record

van Straelen

Active

Rhododendron simsii Planch. · Indica azalea

HEINZ MANTEN

1 record

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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.