DeKalb obtains United States patent.
DeKalb Genetics Corporation (DeKalb, IL) has patented a method
for the production of stable, genetically transformed, Zea mays plants
that comprise an exogenous DNA expressing phosphinothricin acetyl transferase to impart resistance to phosphinothricin in said plants.
The method further comprises transforming said Zea mays plants with a
second gene and further still wherein said second gene imparts insect
resistance, such as the expression of a Bacillus thuringiensis toxin
gene. The method for achieving stable transformation includes tissue
culture methods and media, methods for the bombardment of recipient
cells with said DNA's, and methods of regenerating fertile plants
from transformed cells. The invention also pertains to a method of
breeding said transgenic Zea mays plants with a either a non-transgenic
plant or a transgenic plant, and the obtention of fertile transgenic
plants and seed therefrom. (US 5919675)