Patents Assigned to DeKalb Plant Genetics
  • Patent number: 5451705
    Abstract: This invention relates generally to the production of maize, commonly known in the United States as corn, and more specifically to hybrid corn plants with certain advantageous phenotypes resulting from interactions of the haploid genetic contributions of inbred parental lines. This invention relates to the hybrid genetic complement, the expression of which produces these phenotypes and to the complement as housed in seeds and tissues, in particular, those capable of producing or regenerating the hybrid plants either in vivo or in vitro. An aspect of this invention, hybrid DK451, is characterized by many advantageous phenotypic traits including superior yield and stalk lodging. It has characteristic restriction fragment length polymorphism (RFLP) and isozyme profiles.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: September 19, 1995
    Assignee: Dekalb Plant Genetics
    Inventors: James R. Larkins, Marvin Lindsey, Daniel F. Palmer
  • Patent number: 5449855
    Abstract: This invention relates generally to the production of maize, commonly known in the United States as corn, and more specifically to hybrid corn plants with certain advantageous phenotypes resulting from interactions of the haploid genetic contributions of inbred parental lines. This invention relates to the hybrid genetic complement, the expression of which produces these phenotypes and to the complement as housed in seeds and tissues, in particular, those capable of producing or regenerating the hybrid plants either in vivo or in vitro. An aspect of this invention, hybrid DK743, is characterized by many advantageous phenotypic traits including superior yield and staygreen. It has characteristic restriction fragment length polymorphism (RFLP) and isozyme profiles.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: September 12, 1995
    Assignee: DeKalb Plant Genetics
    Inventors: Thomas E. Morgan, A. Forrest Troyer
  • Patent number: 5444177
    Abstract: This invention relates generally to the production of maize, commonly known in the United States as corn, and more specifically to hybrid corn plants with certain advantageous phenotypes resulting from interactions of the haploid genetic contributions of inbred parental lines. This invention relates to the hybrid genetic complement, the expression of which produces these phenotypes and to the complement as housed in seeds and tissues, in particular, those capable of producing or regenerating the hybrid plants either in vivo or in vitro. An aspect of this invention, hybrid DK671, is characterized by many advantageous phenotypic traits including superior yield, seedling vigor, stay green, stalks and roots. It has characteristic restriction fragment length polymorphism (RFLP) and isozyme profiles.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: August 22, 1995
    Assignee: Dekalb Plant Genetics
    Inventor: John H. Pfund
  • Patent number: 5424483
    Abstract: This invention relates generally to the production of maize, commonly known in the United States as corn, and more specifically to hybrid corn plants with certain advantageous phenotypes resulting from interactions of the haploid genetic contributions of inbred parental lines. This invention relates to the hybrid genetic complement, the expression of which produces these phenotypes and to the complement as housed in seeds and tissues, in particular, those capable of producing or regenerating the hybrid plants either in vivo or in vitro. An aspect of this invention, hybrid DK554, is characterized by many advantageous phenotypic traits including superior yield, staygreen, and roots. It has characteristic restriction fragment length polymorphism (RFLP) and isozyme profiles.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: June 13, 1995
    Assignee: Dekalb Plant Genetics
    Inventors: John H. Pfund, James R. Larkins
  • Patent number: 5322789
    Abstract: This invention relates to the regeneration of fertile monocotyledonous plants from anther or microspore cultures. Fertile corn plants have been regenerated from in vitro cultures by the methods disclosed herein. The invention relates to synergistic effects of pretreatment with a combination of stresses, for example, a carbon structure in the preculture medium capable of inducing embryogenesis such as mannitol at cold temperatures, for example, 10.degree. C. A solid support system has been developed to transfer isolated microspores through a series of subcultures containing different media. The composition of the media are aspects of the invention. Chromosome doubling methods for haploid anther and isolated microspore cultures are presented. This invention also relates to the plants regenerated from microspore or anther cultures, and to their seeds and progeny.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: June 21, 1994
    Assignee: DeKalb Plant Genetics
    Inventors: Anthony D. Genovesi, Richard A. Yingling
  • Patent number: 5134074
    Abstract: Embryogenic callus of corn inbred B73 is disclosed along with viable, seed-producing plants derived from this embryogenic callus. Also disclosed are plantlets from embryogenic cell suspension cultures of B73 and mutants and recombinant progeny of embryogenic callus.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: July 28, 1992
    Assignee: DeKalb Plant Genetics
    Inventors: Phillip N. Gordon, Thomas B. Rice