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.

Argydupea

Active

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

Syngenta Seeds B.V.

5 records

Angel of Desire

Active

Dianthus plumarius L. · Garden pink

Keith R.W. Hammett

5 records

African Sunshine

Active

Kalanchoe Adans. · Kalanchoe

Knud Jepsen

5 records

Lochsa

Active

Pisum sativum L. · Pea

CRITES SEEDS

DE NL

7 records

Pingus

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

Danisco Seed

CZ ES HU

4 records

Rimini

Terminated

Dianthus caryophyllus L. · Carnation

Laboratorie de Physiologie Vegetale Etablissements Barbaret & Blanc

DE ES NL PL

4 records

Pekcoujoux

Terminated

Rosa L. · Rose

PEKMEZ PAUL| Paul Pekmez

DE FR IT NL

4 records

Pouluf

Protection expired

Rosa L. · Rose

POULSEN ROSER A/S

DK NL PL SE

5 records

Korbisch

Protection expired

Rosa L. · Rose

W. Kordes Sohne Rosenschulen GmbH & Co KG| DE

BE DE DK FR

4 records

Korfalt

Protection expired

Rosa L. · Rose

W.KORDES' SOEHNE ROSENSCHULEN GMBH & CO KG

BE DE DK NL

4 records

Kortor

Protection expired

Rosa L. · Rose

KORDES' SOEHNE| W. Kordes' Soehne Rosenschulen GmbH & Co KG

DE DK NL SE

4 records

Jaspis

Protection expired

Hordeum vulgare L. · Barley

ZEA INVENT,RESEARCH BR.IN

CZ DK ES SK

7 records

Tandolgnil

Active

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

DE NL PL

4 records

Tantaluma

Protection expired

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

DE NL PL

5 records

Tereeuw

Active

Gerbera jamesonii Bolus ex Hook. f. · Barberton daisy

Terra Nigra Holding b.v

FR HU PL

4 records

Poulrang

Terminated

Rosa L. · Rose

POULSEN ROSER A/S

DE DK FR

4 records

Rosabella

Terminated

Gerbera L. · Gerbera

FLORIST HOLLAND B.V.

DE IT NL

4 records

Rigoletto

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Strube GmbH Co.KG, Söllingen DE

DE HU UA

4 records

Pensho

Terminated

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

MICHALIK ANDREA

CZ HU PL

4 records

Quantum

Terminated

Brassica napus L. · Rapeseed

University of Alberta / University of Alberta

EE IT LV

4 records

Philemon

Terminated

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

Syngenta Seeds B.V.

HU NL PL

4 records

Pacdala

Active

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

MICHALIK ANDREA

CZ HU PL

4 records

Poulgav

Protection expired

Rosa L. · Rose

POULSEN ROSER A/S

DK PL SE

4 records

Ondelia

Terminated

Dianthus caryophyllus L. · Carnation

LABOR.PHYSILOGIE VEGETAL

DE ES NL

4 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.