Skip to content
agronom.cc cultivar database

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.

KLEDP23562

Application submitted

Dianthus caryophyllus L. · Carnation

MAIKE BOXRIKER

2 records

KLEDP17264

Active

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Lena Thiede

2 records

KLEDP16186

Active

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Lena Thiede

2 records

KLEDP08098

Active

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Martin Glawe

2 records

Jacfrain

Active

Rosa L. · Rose

Zary Keith W.|Thousand Oaks, CA, US

2 records

Interzabunel

Terminated

Rosa L. · Rose

Interplant Roses B.V

2 records

Kleroder

Terminated

Pelargonium L'Hér. ex Ait. · Geranium

Siegfried Klemm

2 records

Isaura Yellow

Active

Chrysanthemum L. · Chrysanthemum

Johan David

2 records

KLEDP22471

Active

Dianthus caryophyllus L. · Carnation

Thiede Lena

2 records

Harzazz

Protection expired

Rosa L. · Rose

HARKNESS NEW ROSES LTD

3 records

ILVOAIKO04

Active

Rhododendron simsii Planch. · Indica azalea

Instituut voor Landbouw- en Visserijonderzoek (ILVO) Eenheid Plant

2 records

Hilswebla

Active

Gerbera L. · Gerbera

HilverdaFlorist B.V.

2 records

Harnext

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

3 records

Klesectra

Terminated

Pelargonium L'Hér. ex Ait. · Geranium

Selecta Klemm GmbH & Co. KG

2 records

Hilkaylee

Active

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

KLECA19508

Active

Calibrachoa Cerv. · Calibrachoa

Dominik Losert

2 records

Hilbechwhi

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

KLECA21566

Active

Calibrachoa Cerv. · Calibrachoa

Angelo Carrella

2 records

KLECA18510

Active

Calibrachoa Cerv. · Calibrachoa

Klemm + Sohn GmbH & Co. KG^^^Nils Klemm^^^Anita Stöver

2 records

Harfrisky

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Jump to page 33 36 73 109 123 143 145 181 218 233