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.

Kamosere Gokigenyo

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Toyokazu Ichie

1 record

Korjeafra

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

1 record

Hilfmadi

Terminated

Gerbera L. · Gerbera

HilverdaFlorist B.V.

1 record

Highgrove

Withdrawn

Rosa L. · Rose

Heather Mary Horner

1 record

KLEN03037

Terminated

Dianthus caryophyllus L. · Carnation

Nils Klemm

1 record

Korelpusch

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

1 record

Konetem

Terminated

Dianthus L. · Carnation

P.Kooij & Zonen B.V.

1 record

Kopretsur

Terminated

Dianthus L. · Carnation

P.Kooij & Zonen B.V.

1 record

Jemma

Application submitted

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Alice Petersen

1 record

IRTAMB-A22-120

Active

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

IRTA (G. CATALUÑA)

1 record

Interpasru

Terminated

Rosa L. · Rose

Interplant Roses B.V

1 record

Jam Roly Poly

Application submitted

Geum x jankae Beck

Gerardus A.P. Lommerse

1 record

HSPS23

Application submitted

Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven

Plant Select N.V.

1 record

KLEPH24805

Application submitted

Petunia x atkinsiana D. Don · Garden petunia

Antonella Capo

1 record

KLEN01257

Terminated

Dianthus L. · Carnation

Per Klemm

1 record

Kobar

Terminated

Dianthus L. · Carnation

P.Kooij & Zonen B.V.

1 record

IRTAMB-A21-323

Active

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

IRTA (G. CATALUÑA)

1 record

KLEYSOR

Terminated

Dianthus L. · Carnation

Per Klemm

1 record

KLEDG18273

Terminated

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Lena Thiede

1 record

INCHADICLO

Terminated

Euphorbia hypericifolia L. · Graceful sandmat

Birgit Hofmann

1 record

KLEDP09102

Terminated

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Martin Glawe

1 record

KLEDP07093

Withdrawn

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Martin Glawe

1 record

Hollands Glorie

Terminated

Delphinium elatum L. · Alpine delphinium

Firma Kwekerij Delphi V.O.F.

1 record

IPB074814

Active

Rosa L. · Rose

Interplant Roses B.V

1 record

1 2 ... 208 209 210 211 212 213 214 ... 253 254 Next

Jump to page 36 73 109 111 145 181 201 218 221

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

All terms →

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.