10 August 2026
The variety "Jean's" is a breeding specimen of Italian origin used in scientific research for the conservation of hazelnut genetic diversity. Information regarding its commercial purpose or target yield indicators is absent.
In the course of studies using DNA markers, the variety was classified as belonging to the group with tubular nut husks. Studies of the morphology and ultrastructure of the pollen of this specimen were also conducted for the purpose of scientific comparison with other varieties.
Data on maturity group, plant height parameters, disease resistance, and product quality are not provided in available sources.
1 jurisdiction
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.
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
Same species
Corylus avellana L. · Common hazel
WEISSMANN (FR)
Corylus avellana L. · Common hazel
Piemonte ASPROCOR S.C.C.A.P.A.
Corylus avellana L. · Common hazel
Corylus avellana L. · Common hazel
Corylus avellana L. · Common hazel
Corylus avellana L. · Common hazel
JEDDELOH| Jan-Dieter zu Jeddeloh (Baumschulen)
Nearby in the species list Istarski duguljasti, ISTARSKI_OKRUGLI, Istrianer, Istrische Runde, Istrska debeloplodna, Istrska dolgoplodna leska, Istrska okrogla, Istrska okrogloplodna leska, Ivantejevskij Krasnyj, Iwess Long Seedling, Jedcor, Jefferson, Jemtegaard 5, JM 251, Jolus, Junat, Juningia, JWW9, KARIDATY, Katalonische Zellernuss