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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.

Exquisit

Active

Tulipa L. · Tulip

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

NL
1 record

Dutch Monarch

Withdrawn

Tulipa L. · Tulip

Maveridge Licensing B.V.

NL
1 record

Ebro

Withdrawn

Dianthus caryophyllus L. · Carnation

Hodowla Roślin Bronisze sp. z o.o.

PL
2 records

Eldorado SZF

Terminated

Zinnia elegans Jacq. · Common zinnia

PlantiCo Hodowla i Nasiennictwo Ogrodnicze Szymanów Sp. z o.o.

PL
1 record

DUCIL

Terminated

Chrysanthemum indicum L. · Indian chrysanthemum

Marius Dumortier (FR)

FR
1 record

Dubbele Meikers

Active

Prunus x gondouinii (Poit. & Turpin) Rehder · Duke cherry

Information not available - Contact NL authorities

NL
1 record

Ernst Star

Active

Tulipa L. · Tulip

Sylvestris B.V.

NL
1 record

Dressing

Active

Tulipa L. · Tulip

Lutjefleur Bloemisterij

NL
1 record

DORGRAN

Terminated

Rosa L. · Rose

Pepinieres & Roseraies Dorieux GAEC (FR)

FR
1 record

DORAVIG

Withdrawn

Rosa L. · Rose

Pepinieres & Roseraies Dorieux GAEC (FR)

FR
1 record

Double Power

Active

Narcissus L. · Daffodil

Bloembollenkwekerij Firma Veul

NL
1 record

ENIJA

Active

Rosa L. · Rose

Dzidra Rieksta

LV
1 record

Doris

Terminated

Sinningia speciosa (G. Lodd.) Hiern · Gloxinia

Flora in vitro Ogrodnictwo-Laboratorium inż. Kazimierz Dąbrowski

PL
1 record

DUFTWOLKE

Terminated

Rosa L. · Rose

MATHIAS TANTAU

DK
1 record

Duchess

Active

Tulipa L. · Tulip

G. Buis Bloembollen B.V.

NL
1 record

Emblazon

Active

Tulipa L. · Tulip

Savro B.V.

NL
1 record

ELEKTRA

Terminated

Begonia L. · Begonia

SIEGFRIED MERHOLZ

DK
1 record

ELEGANCE

Terminated

Pelargonium L'Hér. ex Ait. · Geranium

Gunter DUMMEN (DE)

FR
1 record

Double Viri

Active

Tulipa L. · Tulip

J. en P. Snoek en Zn. B.V.

NL
1 record

DK6356 ZSZM

Active

Zea mays L. · Maize

DZIUBETSKYI BORYS VOLODYMYROVYCH, CHERCHEL VLADYSLAV YURIIOVYCH

UA
2 records

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