(19)
(11) EP 4 827 338 A1

(12)

(43) Date of publication:
28.10.2026 Bulletin 2026/44

(21) Application number: 24836751.8

(22) Date of filing: 20.12.2024
(51) International Patent Classification (IPC): 
A01H 4/00(2006.01)
A01H 1/08(2006.01)
 A01H 5/10(2018.01)
A01H 6/14(2018.01)
(52) Cooperative Patent Classification (CPC):
A01H 1/08; A01H 6/1464; A01H 4/002; A01H 4/005; A01H 4/008; A01H 5/10
(86) International application number:
PCT/EP2024/087907
(87) International publication number:
WO 2025/133120 (26.06.2025 Gazette 2025/26)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 21.12.2023 EP 23219010

(71) Applicant: KWS SAAT SE & Co. KGaA
37574 Einbeck (DE)

(72) Inventors:
  • SPRINGMANN, Clemens
    37581 Bad Gandersheim (DE)
  • EUBANKS, Sarah
    30880 Laatzen (DE)
  • VALDES VELAZQUEZ, Ariana Istar
    37574 Einbeck (DE)
  • BRÜMMER, Jane
    37574 Einbeck (DE)

(74) Representative: Eisenführ Speiser 
Patentanwälte Rechtsanwälte PartGmbB Gollierstraße 4
80339 München
80339 München (DE)

   


(54) METHOD FOR PRODUCING HAPLOID AND DOUBLED HAPLOID SUNFLOWER PLANTS IN A DOUBLE LAYER SYSTEM MICROSPORE CULTURE