Variety traits
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.
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.
Tagetes patula L. · French marigold
PlantiCo Hodowla i Nasiennictwo Ogrodnicze Szymanów Sp. z o.o.
Tagetes patula L. · French marigold
Hodowla i Nasiennictwo Roślin Ogrodniczych Waganiec sp. z o.o.
Begonia Semperflorens-Cultorum Group · Bedding Begonia
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Eschscholzia californica Cham. · California Poppy
PlantiCo Hodowla i Nasiennictwo Ogrodnicze Golebiew sp. z o.o.
Rhododendron L. · Azalea
OTTO STAHNKE & ELEONORE DETTMER
Zinnia elegans Jacq. · Common zinnia
CNOS Przedsiebiorstwo Nasiennictwa Ogrodniczego sp. z o.o.
Rosa L. · Rose
Łukasz Rojewski
Pelargonium graveolens L'Hér. · Rose geranium
Hofmann Christa
Clarkia amoena (Lehm.) A. Nelson & J. F. Macbr. subsp. lindleyi (Douglas) F. H. Lewis & M. R. Lewis · Godetia
Wielkopolska Hodowla Roślin Ogrodniczych
Rhododendron L. · Azalea
OTTO STAHNKE & ELEONORE DETTMER
Rhododendron simsii Planch. · Indica azalea
GLASER| Karl Glaser
Rosa L. · Rose
Paul Pekmez (FR)
Chrysanthemum x morifolium Ramat. · Florist's daisy
PARATY B.V.B.A
Rhododendron L. · Azalea
OTTO STAHNKE & ELEONORE DETTMER
Rhododendron simsii Planch. · Indica azalea
STAHNKE DETTMER| Otto Stahnke und Frau Eleonore Dettmer (Gartenbaubetrieb)
Brassica napus L. · Rapeseed
NILSSON ANDERS
Matthiola incana (L.) R. Br. · Hoary stock
Hodowla i Nasiennictwo Roślin Ogrodniczych Waganiec sp. z o.o.
Rosa L. · Rose
Raphael REQUENA (FR)
Rosa L. · Rose
GAEC ORARD (FR)
Rosa L. · Rose
GAEC ORARD (FR)
Rosa L. · Rose
GAEC ORARD (FR)
Freesia Eckl. ex Klatt · Freesia
Penning Breeding B.V.
Tulipa L. · Tulip
Vertuco B.V.
Dianthus L. · Carnation
SAPIA FLAVIO