US4351130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recessive tall--a fourth genetic element to facilitate hybrid cereal production
Assignee: United States Department of Agriculture
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Filing: 1981-06-16
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Granted: 1982-09-28
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Expires: 2001-06-16
Abstract
Abstract A recessive gene for tallness in plants is used as the fourth genetic element along with cytoplasmic-genetic male sterility, sterility maintainers and fertility restorers to facilitate hybrid seed production. The recessive tall gene is incorporated into the pollen fertility restoring parent (R-line) in hybrid seed production crosses (A-line×R-line crosses).
Inventors
- 👤 J. Neil Rutger
- 👤 Howard L. Carnahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
A; A01; A01H; A01H1/00; A01H1/02; A01H1/022; A01H1/023; Y; Y10; Y10S; Y10S47/00; Y10S47/01
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
32 words
A method of producing hybrid seed, comprising: growing together in pollinating proximity male pollinator plants which are characterized as recessively-inherited tall plant types having a recessive tall gene, and shorter female plants.
Claim 2
Independent Claim
32 words
A method of producing hybrid seed, comprising: growing together in pollinating proximity male pollinator plants which are characterized as recessively-inherited tall plant types having a recessive tall gene, and shorter female plants.
Claim 3
Independent Claim
74 words
A method of producing hybrid seed, comprising: growing together in pollinating proximity male parent plants which have recessive tall genes and fertility restoring genes and female parent plants which have male sterile cytoplasm and non-fertility restoring genes; said male plants being sufficiently taller than said female plants to allow pollen from the male plants to be dispersed on to said female plants by wind and gravity to pollinate said plants and produce hybrid seed.
Claim 4
Independent Claim
74 words
A method of producing hybrid seed, comprising: growing together in pollinating proximity male parent plants which have recessive tall genes and fertility restoring genes and female parent plants which have male sterile cytoplasm and non-fertility restoring genes; said male plants being sufficiently taller than said female plants to allow pollen from the male plants to be dispersed on to said female plants by wind and gravity to pollinate said plants and produce hybrid seed.
Claim 5
Dependent Claim
20 words
The method of claim 2 wherein said seed of said male and female parent plants are planted and harvested separately.
Claim 6
Dependent Claim
15 words
The method of claim 2 wherein said male pollinator plants are effectively eliminated after pollination.
Claim 7
Dependent Claim
14 words
The method of claim 2 wherein said female parent is a semidwarf plant variety.
Claim 8
Dependent Claim
15 words
A product produced in accordance with the method of claims 2, 3, 4 or 5.
Claim 9
Independent Claim
45 words
A method of producing hybrid rice seed, comprising: growing together in pollinating proximity recessive tall (eui) male parent rice plants which have fertility restoring genes and semidwarf female rice parent plants which have male sterile cytoplasm and non-fertility restoring genes to produce hybrid rice seed.
Claim 10
Independent Claim
45 words
A method of producing hybrid rice seed, comprising: growing together in pollinating proximity recessive tall (eui) male parent rice plants which have fertility restoring genes and semidwarf female rice parent plants which have male sterile cytoplasm and non-fertility restoring genes to produce hybrid rice seed.
Claim 11
Dependent Claim
19 words
The method of claim 7 wherein said seed of said male and female parent rice plants are harvested separately.
Claim 12
Dependent Claim
15 words
A product produced by said female parent in accordance with the method of claim 8.
Claim 13
Dependent Claim
9 words
A recessive tall rice plant having elongated upper internode.
Claim 14
Dependent Claim
9 words
A recessive tall rice plant having elongated upper internode.
References Cited (Backward Citations)
US4051629A
Cited
US4143486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |