Patents Assigned to Nunhems Zaden BV
  • Agrobacterium-mediated transformation of plants
    Patent number: 6323396
    Abstract: Agrobacterium strains which have lost the capacity to proliferate vigorously in vitro or in planta, are provided, as well as transformation methods using these Agrobacterium strains.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: November 27, 2001
    Assignee: Nunhems Zaden BV
    Inventors: Rob Dirks, Roger Peeters
  • Method for the production of double-haploid cucumbers
    Patent number: 5492827
    Abstract: Obtaining double-haploid cucumber plants from haploid plants is considerably improved when immature or unfertilized ovulae or embryo sac cells, which may be contained in ovarial tissue, are isolated, the formation of callus, embryos or shoots is induced on a hormone-containing medium, these haploid plants are cultured and duplication of the genome is effected.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: February 20, 1996
    Assignee: Nunhems Zaden BV
    Inventor: Robert Dirks