US4499687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid Brassica seed production
Assignee: Mycogen Plant Science Inc
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Filing: 1983-01-31
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Granted: 1985-02-19
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Expires: 2003-01-31
Abstract
Abstract A process for the production of high purity hybrid Brassica seed, comprising (a) selecting a heterozygous, maximally self-incompatible parent plant, (b) cloning said selected plant to produce a first cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible, (c) crossing plants of said parental line with plants of a second parental line, and (d) collecting high purity hybrid seed from said first cloned parental line. The second parental line may also have been obtained by cloning a second maximally self-incompatible plant to obtain a second cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible. The second parent plant may be homozygous or heterozygous. The high purity hybrid seed may be collected from said second maximally self-incompatible cloned parental line or alternatively from both first and second maximally self-incompatible cloned parental lines.
Inventors
- 👤 Robert H. Lawrence, Jr.
- 👤 Phillip E. Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:06
CPC Classifications
A; A01; A01H; A01H6/00; A01H6/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A process for the production of high purity hybrid Brassica seed, comprising: (a) selecting a heterozygous maximally self-incompatible parent plant; (b) cloning said selected heterozygous maximally self-incompatible parent plant to produce a first cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible; (c) crossing plants of said first cloned parental line with plants of a second parental line; and (d) collecting high purity hybrid seed from said first cloned parental line.
Claim 2
Dependent Claim
76 words
A process for the production of high purity hybrid Brassica seed, comprising: (a) selecting a heterozygous maximally self-incompatible parent plant; (b) cloning said selected heterozygous maximally self-incompatible parent plant to produce a first cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible; (c) crossing plants of said first cloned parental line with plants of a second parental line; and (d) collecting high purity hybrid seed from said first cloned parental line.
Claim 3
Dependent Claim
93 words
A process for the production of high purity hybrid Brassica seed, comprising: (a) selecting a heterozygous, maximally self-incompatible parent plant; (b) cloning said selected heterozygous, maximally self-incompatible parent plant to produce a first cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible; (c) crossing plants of said first cloned parental line with plants of a second parental line; and (d) collecting high purity hybrid seed from said second parental line, wherein the plants of said second parental line are either self-incompatible and sib-incompatible or self-incompatible and clonal incompatible.
Claim 4
Dependent Claim
93 words
A process for the production of high purity hybrid Brassica seed, comprising: (a) selecting a heterozygous, maximally self-incompatible parent plant; (b) cloning said selected heterozygous, maximally self-incompatible parent plant to produce a first cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible; (c) crossing plants of said first cloned parental line with plants of a second parental line; and (d) collecting high purity hybrid seed from said second parental line, wherein the plants of said second parental line are either self-incompatible and sib-incompatible or self-incompatible and clonal incompatible.
Claim 5
Dependent Claim
51 words
The process according to claim 1, wherein said second parental line is obtained by cloning a second maximally self-incompatible parent plant to produce a second cloned parental line, the plants of which are both maximally self-incompatible and maximally clonal-incompatible, and the hybrid seed is collected from one or both parent lines.
Claim 6
Dependent Claim
13 words
The process according to claim 3, wherein said second parent plant is heterozygous.
Claim 7
Dependent Claim
13 words
The process according to claim 3, wherein said second parent plant is homozygous.
Claim 8
Dependent Claim
11 words
The process according to claim 1, wherein said Brassica is cabbage.
Claim 9
Dependent Claim
14 words
The process according to claim 1, 2, or 3, wherein said Brassica is broccoli.
Claim 10
Dependent Claim
14 words
The process according to claim 1, 2, or 3, wherein said Brassica is cauliflower.
Claim 11
Dependent Claim
15 words
The process according to claim 1, 2, or 3, wherein said Brassica is Chinese cabbage.
References Cited (Backward Citations)
US4381624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |