10 August 2026
The Wilhelm variety is an energy willow used in industrial biomass production as a renewable energy source. The plant is characterized by a straight and strong stem shape, which is an advantage for intensive cultivation.
Physiological studies of the variety show high intensity of isoprene emission. The variety was also studied in the context of phytoremediation, demonstrating stability when grown on soils contaminated with heavy metals, without visible morphological signs of stress.
2 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.
Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 13623001
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
More 2 records protections in other jurisdictions are shown on the map above.
Records are sourced from official registry publications. Data sources and legal status
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
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Nearby in the species list Thyre, Tora, Tordis, Torhild, Ulv, Unn, Valborg, VARAZSVESSZOE, Vetla, Weserufer, Winter, Zieverich