N.D. Admin Code 74-03-14.1-01 - General requirements
The following genetic standards are applicable for the production of parental lines and hybrids of wheat produced in alternating strips of cytoplasmic male-sterile seed parent and a fertility restorer line.
1.
Eligibility
requirements for varieties. Standards applicable to wheat varieties
apply to the production of pollinator lines.
2.
Definition of parental types.
a.
Maintainer (B-line). A line
with normal fertile cytoplasm which is used as a pollinator to increase the
seed parent.
b.
Seed parent
(A-line). A cytoplasmic male-sterile line (CMS), which is genetically
identical to the maintainer line that when pollinated by a restorer, produces
hybrid seed.
c.
Restorer
(R-line). Any male fertile line possessing nuclear restoration genes
used as a pollinator in the production of commercial hybrid seed.
3.
Eligible seed
classes.
a. Only the certified class is
recognized in the production of commercial hybrid seed. A commercial hybrid is
planted for any use except for seed production. To be certified, a commercial
hybrid must be produced from foundation class seed stocks. These seed stocks
must consist of male steriles, inbred lines, and/or hybrids.
b. Only the foundation class is recognized
for parental lines.
Notes
General Authority: NDCC 4.1-52-10
Law Implemented: NDCC 4.1-52-10, 4.1-53-42
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