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.

Kataormi

Active

Kalanchoe Adans. · Kalanchoe

Nubilus B.V.

2 records

Fuji

Terminated

Rhododendron simsii Planch. · Indica azalea

Lammert Koning^^^Matthijs Cornelis Barendse

2 records

Frybountiful

Protection expired

Rosa L. · Rose

Gareth R. Fryer

2 records

HARWINDOW

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

HARQUASAR

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Harmaxim

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Honeydew

Active

Hybrids between Echinacea purpurea (L.) Moench and Echinacea paradoxa (Norton) Britton

ARIE BLOM

2 records

Jeanny

Terminated

Chrysanthemum L. · Chrysanthemum

Nicolaas P. Dekker

2 records

Kerprilpro

Active

Petunia x atkinsiana D. Don · Garden petunia

Timothy Edward Kerley^^^Sarah Elisabeth Kerley^^^David William Kerley^^^Priscilla Grace Kerley

2 records

Kercalsun

Active

Calendula officinalis x Calendula suffruticosa

David William Kerley, Timothy Edward Kerley, Sarah Elisabeth Kerley, Priscilla Grace Kerley

2 records

Kerbelsnow

Active

Primula vulgaris Huds. · Primrose

Priscilla Grace Kerley, David William Kerley, Timothy Edward Kerley

2 records

Kerbelmilk

Active

Primula vulgaris Huds. · Primrose

Priscilla Grace Kerley, David William Kerley

2 records

Hargala

Protection expired

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Jenny

Active

Saintpaulia ionantha H. Wendl. · African violet

De Eeuwige Lente B.V.

2 records

Hidalgo

Active

Dahlia Cav. · Dahlia

Green Works International B.V.

2 records

HGV03

Active

Goeppertia roseopicta (Linden) Borchs. & S. Suárez · Rose-painted calathea

Valstar Oscar R.|Maasland, NL

2 records

Jacseboy

Active

Rosa L. · Rose

Zary Keith W.|Agoura Hills, CA, US

2 records

Harpeep

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

HARJOLLY

Application submitted

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Harbabble

Protection expired

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Jump to page 35 36 73 109 125 145 181 218 235