Skip to content

Colt

Active

hybrids between Prunus avium and Prunus pseudocerasus · Ornamentals · bred by National Seed Development Organisation Ltd / East Malling Research Station

also searched as: колт

Variety description

10 August 2026

The Colt rootstock is a product of crossing Prunus avium and Prunus pseudocerasus. Trees on this rootstock reach 60–70% of the size of trees on vigorous seedling rootstocks and enter into fruiting earlier. The rootstock provides good anchorage, but due to a shallow root system, it is sensitive to drought.

The plant adapts well to moist and heavy soils, possesses resistance to bacterial canker, Phytophthora root rot, and rodent damage, but is sensitive to bacterial root burn. The rootstock is compatible with most commercial varieties, is easily propagated by cuttings, and produces few suckers.

Sources8
  • Loading…

Countries of admission

3 jurisdictions

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

QZ

active terminated no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Breeder
National Seed Development Organisation Ltd / East Malling Research Station Developed the variety
Applicant
SOMERSBY TREEFRUIT 26 Submitted the application to the register
Rights holder
National Seed Development Organisation Ltd / East Malling Research Station Holds the rights to the variety
Maintainer
Centre Technique Interprofessionnel des Fruits & Legumes (FR) 144 Responsible for variety maintenance

Admission to trade

The variety is listed in the national registry — its seeds are authorized for sale in this country.

  • FR France Active

    № 0052875

    Application
    2 February 1981
    Registration
    1 January 1981

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

Denmark № 10858
Protection expired
  1. Application filed 2 December 1975
  2. Registered 28 May 1979
  3. Entry closed 27 May 2004

More 1 record protections in other jurisdictions are shown on the map above.

Records are sourced from official registry publications. Data sources and legal status

Found an error in the record?

The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.

This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources

Same species

Other varieties: hybrids between Prunus avium and Prunus pseudocerasus

All 3 varieties of species

Cob

Terminated

hybrids between Prunus avium and Prunus pseudocerasus

EAST MALLING RESEARCH ST. (GB)

FR
1 record

GISELA 5

Terminated

hybrids between Prunus avium and Prunus pseudocerasus

PROF. DR. WERNER GRUPPE & PROF. DR. HANNA SCHMIDT

DK
1 record

Nearby in the species list Cob, GISELA 5

Discussion: Colt

0 messages

Growing experience and notes on the entry. Comments are not part of the reference data and are not verified against primary sources.

Comments are open to signed-in readers. Sign in · Sign up