The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 1998
Filed:
Jun. 06, 1995
Applicant:
Inventor:
Xu Jia, Beijing, CN;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; A01H / ; A01H / ;
U.S. Cl.
CPC ...
800200 ; 800D / ; 435418 ; 435419 ; 435424 ; 435430 ; 514629 ; 47 58 ;
Abstract
Fertile corn plants are produced by culturing anthers or pollen in the presence colchicine which is added to an otherwise ordinary anther culture medium after a pre-culture phase in the absence of the colchicine. The colchicine induces doubling of the chromosome numbers in regenerated plants which would otherwise be infertile haploids. Haploid doubling provides a rapid route to homozygous parental plant lines.