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Siena

Active

Solanum tuberosum L. Potato · Agricultural · bred by van Loon, J.P.

also searched as: сиена

Variety description

10 August 2026

The plant forms a semi-erect or spreading bush with white flowers. Tubers have smooth yellow skin and very shallow eyes. The vegetation cycle is about 90 days, the variety is characterized by high yield.

The variety is resistant to potato cyst nematode, but shows moderate susceptibility to late blight, common scab, and sensitivity to potato virus Y. Tubers are prone to mechanical damage, require careful harvesting, and are suitable for medium and long-term storage.

The variety is adapted to warm climates and is intended for table use. It has low disintegrability, which makes it suitable for preparing salads, boiling, and frying.

Sources8
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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Variety registered as early as 3 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified.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
van Loon, J.P. 4 Developed the variety
Applicant
TPC Research BV 13 Submitted the application to the register
Rights holder
TPC Research BV 13 Holds the rights to the variety
Maintainer
MERCIAN LTD 27 Responsible for variety maintenance

Admission to trade

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

  • QZ European Union Active

    № 248455

  • FR France Terminated

    № 4060869

    Application
    31 October 2016
    Registration
    1 January 2019
    Terminated
    31 December 2023
  • GB United Kingdom Active

    № 4/11483

    Application
    6 September 2018
    Registration
    31 October 2018

Plant breeders' rights

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

Netherlands № ARD2263
Active
  1. Application filed 10 December 2015
  2. Registered 11 April 2018
  3. Currently active indefinite in the register

More 4 records 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: Potato

All 4 994 varieties of species

SANTE'

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Solanum tuberosum L. · Potato

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BG CZ EE HR HU IE +7
25 records

VR 808

Active

Solanum tuberosum L. · Potato

VAN RIJN-KWS B.V.

NL PL UA
25 records

Solanum tuberosum L. · Potato

Z.P.C. /F.G. VAN DER ZEE /G. VAN DER ZEE /P.J. VAN DER ZEE

BE CZ DE ES FR HR +5
23 records

Solanum tuberosum L. · Potato

Stacja Hodowli Roślin Stawiski

AT DE FI FR IT NL +1
8 records

Sielawa

Withdrawn

Solanum tuberosum L. · Potato

Olsztyńska Hodowla Ziemniaka i Nasiennictwo OLZNAS-CN sp. z o.o.

PL
1 record

Sientje

Protection expired

Solanum tuberosum L. · Potato

Veenkoloniale Boerenbond

DK FR
4 records

Nearby in the species list SI204, Sibari, Sibelle, Sibu, Sibylla, Sidney, Siebo, Siegfried, Sieglinde, Sielawa, Sientje, Sierra, Sierra Gold, Sifra, Sigma, Signal, Signum, Sigunda, Siikli, Sila

Discussion: Siena

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