Sheegene-20
ActiveVitis vinifera L. · Common grape vine
TIMOTHY SHEEHAN
ES
12 records
Variety description
10 August 2026
The Defensor variety (designated as Defensor B) was obtained as a result of breeding work based on the crossing of Chancellor and Riesling varieties. The genetic material was adapted in Portugal to create vineyards requiring reduced use of pesticides.
This variety is classified as resistant to fungal diseases (PIWI), including downy mildew and powdery mildew. Currently, Defensor is used in breeding programs to develop new hybrids in conjunction with traditional Portuguese grape varieties.
Sources8
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Countries of admission
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.
Variety in registries Regions of admission, rights holders, and status of plant breeders' rights
Parties
- Applicant
- Jorge Böhm 3 Submitted the application to the register
- Maintainer
- Jorge Böhm 3 Responsible for variety maintenance
Plant breeders' rights
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
Portugal
№ 000063
Active
- Application filed 19 May 2000
- Registered 25 November 2003
- Currently active indefinite in the register
Records are sourced from official registry publications. Data sources and legal status
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