DEFINITION OF TERMSDefinition of Terms used for Purposes of the Montana Certification Program taken from the Terminology of the
Association of Official Seed Certifying Agencies.
A. VarietyThe term variety (cultivar) denotes an assemblage of cultivated individuals which are distinguished by any characters (morphological, physiological, cytological, chemical or others) significant for the purposes of agriculture, forestry, or horticulture and which, when reproduced (sexually or asexually) or reconstituted,
retain their distinguishing features.
B. Classes of Seed Recognized in Seed Certification
person, or designee thereof. As applied to certified seed, breeders seed is the source for the
production of seed of the other classes of certified seed.
of the originator or sponsoring plant breeding institution, or person, or designee thereof. As applied
to certified seed, Foundation seed is a class of certified seed which is produced under procedures
established by the certifying agency for the purpose of maintaining genetic purity and identity.
acceptable to the certifying agency to maintain satisfactory genetic purity and identity.
maintain satisfactory genetic purity and identity, and which has been acceptable to the certifying
agency. Certified tree seed is defined as seed from trees produced so as to assure genetic identity.
Seeds from interspecific hybrids of forest trees may be included.
D. Off-types"Off-type" means any seed or plant not a part of the variety in that it deviates in one or more characteristics
from the variety as described and may include, seeds or plants of other varieties; seeds or plants not
necessarily any variety; seed or plants resulting from cross-pollination by other kinds or varieties; seeds or
plants resulting from uncontrolled self-pollination during production of hybrid seed, or segregates from any
of the above plants.
E. Inbred LineAn inbred line is a relatively true-breeding strain resulting from at least five successive generations of
controlled self-fertilization or of backcrossing to a recurrent parent with selection or its equivalent.
F. Single CrossThe first generation of a cross of two inbred lines, an inbred line and a Foundation backcross, or of two
Foundation back-crosses.
G. Foundation Single CrossA Foundation single cross is a single cross used in the production of Foundation backcrosses or of
double, three-way, or top crosses.
H. Foundation Backcrosses1. A first generation Foundation backcross shall be the first generation cross between a Foundation
single cross of related inbred lines and an inbred line which shall be the same as one of the inbreds in
the Foundation single cross.
2. A second generation Foundation backcross shall be the cross of a first generation backcross (ear
parent) with its recurrent inbred parent (pollen parent).
I. Double CrossThe first generation hybrid between two Foundation single crosses.
J. Top CrossThe first generation of a cross between an open-pollinated variety and an inbred line, a Foundation
backcross, or a Foundation single cross.
K. Three-way CrossThe first generation of a cross of a Foundation single cross and an inbred line or a Foundation backcross.
L. Open-PollinationOpen-pollinated seed is seed produced as a result of natural pollination as opposed to hybrid seed produced
as a result of controlled pollination.
M. Variants1. Variants are defined as seeds or plants which are: (a) distinct within the variety but occur naturally
in the variety; (b) are stable and predictable with a degree of reliability comparable to other varieties
of the same kind, within recognized tolerances, when the variety is reproduced or reconstituted; and
(c) which were originally a part of the variety as released. Variants are not to be considered offtypes.
2. That the Breeder should identify variants as a part of the variety description, but the expected rate of
occurrence of the variant need be stated only when the Breeder considers the variant to be an aid in
identifying the variety.
3. That the tolerances in Table 4, Section 201.62, Part 201 of the Federal Seed Act be applied to those
variants which are described by the Breeder as useful in identification of the variety.
The majority of the Committee was not in favor of establishing a minimum or maximum range of
variants in a variety.
N. ConditioningThe mechanical handling of seed from harvest until marketing.
Association of Official Seed Certifying Agencies.
A. VarietyThe term variety (cultivar) denotes an assemblage of cultivated individuals which are distinguished by any characters (morphological, physiological, cytological, chemical or others) significant for the purposes of agriculture, forestry, or horticulture and which, when reproduced (sexually or asexually) or reconstituted,
B. Classes of Seed Recognized in Seed Certification
| 1. | Breeder - Breeder seed is seed directly controlled by the originating or sponsoring plant breeding institution, or |
production of seed of the other classes of certified seed.
| 2. | FoundationFoundation seed is seed which is the progeny of breeder or Foundation seed produced under control |
to certified seed, Foundation seed is a class of certified seed which is produced under procedures
established by the certifying agency for the purpose of maintaining genetic purity and identity.
| 3. | RegisteredRegistered seed shall be the progeny of Breeder or Foundation seed handled under procedures |
| 4. | CertifiedCertified seed shall be the progeny of Breeder, Foundation, or Registered seed so handled as to |
agency. Certified tree seed is defined as seed from trees produced so as to assure genetic identity.
Seeds from interspecific hybrids of forest trees may be included.
| C. | Plant BreederPerson or organization actively engaged in the breeding and maintenance of varieties of plants. |
from the variety as described and may include, seeds or plants of other varieties; seeds or plants not
necessarily any variety; seed or plants resulting from cross-pollination by other kinds or varieties; seeds or
plants resulting from uncontrolled self-pollination during production of hybrid seed, or segregates from any
of the above plants.
E. Inbred LineAn inbred line is a relatively true-breeding strain resulting from at least five successive generations of
controlled self-fertilization or of backcrossing to a recurrent parent with selection or its equivalent.
F. Single CrossThe first generation of a cross of two inbred lines, an inbred line and a Foundation backcross, or of two
Foundation back-crosses.
G. Foundation Single CrossA Foundation single cross is a single cross used in the production of Foundation backcrosses or of
double, three-way, or top crosses.
H. Foundation Backcrosses1. A first generation Foundation backcross shall be the first generation cross between a Foundation
single cross of related inbred lines and an inbred line which shall be the same as one of the inbreds in
the Foundation single cross.
2. A second generation Foundation backcross shall be the cross of a first generation backcross (ear
parent) with its recurrent inbred parent (pollen parent).
I. Double CrossThe first generation hybrid between two Foundation single crosses.
J. Top CrossThe first generation of a cross between an open-pollinated variety and an inbred line, a Foundation
backcross, or a Foundation single cross.
K. Three-way CrossThe first generation of a cross of a Foundation single cross and an inbred line or a Foundation backcross.
L. Open-PollinationOpen-pollinated seed is seed produced as a result of natural pollination as opposed to hybrid seed produced
as a result of controlled pollination.
M. Variants1. Variants are defined as seeds or plants which are: (a) distinct within the variety but occur naturally
in the variety; (b) are stable and predictable with a degree of reliability comparable to other varieties
of the same kind, within recognized tolerances, when the variety is reproduced or reconstituted; and
(c) which were originally a part of the variety as released. Variants are not to be considered offtypes.
2. That the Breeder should identify variants as a part of the variety description, but the expected rate of
occurrence of the variant need be stated only when the Breeder considers the variant to be an aid in
identifying the variety.
3. That the tolerances in Table 4, Section 201.62, Part 201 of the Federal Seed Act be applied to those
variants which are described by the Breeder as useful in identification of the variety.
The majority of the Committee was not in favor of establishing a minimum or maximum range of
variants in a variety.
N. ConditioningThe mechanical handling of seed from harvest until marketing.
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