US4237652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of breeding and producing seed corn
Assignee: Individual
•
Filing: 1980-02-04
•
Granted: 1980-12-09
•
Expires: 2000-02-04
Abstract
Abstract A method of breeding yellow dent hybrid seed corn by causing pollination of the silks of an ear other than the top ear of the corn plant with the resulting fertilization of the lower ear. The method is accomplished by causing the ear shoot at the top of the plant to abort before the silks emerge from that shoot, and then allowing a lower ear to produce silks and receive pollen from the male seed parent. Fertilization of the second or lower ear is then accomplished resulting in a corn plant that provides seed (F 1 ) which will in turn produce a higher yield in the farmer's field. (F is the designation of generations of plants, F 1 being the first filial generation.)
Inventors
- 👤 Alan F. Rothermel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:52
CPC Classifications
A; A01; A01H; A01H1/00; A01H1/02; Y; Y10; Y10S; Y10S47/00; Y10S47/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A method of producing yellow dent hybrid seed corn comprising: planting a selected ear parent strain of a corn plant, allowing said corn plant to grow until the top ear shoot emerges from a leaf sheath of the corn plant, preventing fertilization of the top ear shoot, allowing the silks to emerge from an ear shoot below the top ear shoot, causing pollination of the lower ear shoot from an unrelated pollen parent plant, and harvesting the seed corn produced from fertilization of the lower ear shoot, whereby the seed from the lower ear shoot will produce a higher yield the next generation than seed from the top ear shoot.
Claim 2
Independent Claim
110 words
A method of producing yellow dent hybrid seed corn comprising: planting a selected ear parent strain of a corn plant, allowing said corn plant to grow until the top ear shoot emerges from a leaf sheath of the corn plant, preventing fertilization of the top ear shoot, allowing the silks to emerge from an ear shoot below the top ear shoot, causing pollination of the lower ear shoot from an unrelated pollen parent plant, and harvesting the seed corn produced from fertilization of the lower ear shoot, whereby the seed from the lower ear shoot will produce a higher yield the next generation than seed from the top ear shoot.
Claim 3
Dependent Claim
26 words
The method of claim 1 in which fertilization of the top ear shoot is prevented by causing abortion of that shoot before silks emerge from it.
Claim 4
Dependent Claim
26 words
The method of claim 2 in which abortion of the top ear shoot is accomplished by physically removing that shoot before the silks emerge from it.
Claim 5
Independent Claim
19 words
The method defined in claims 1, 2 or 3 in which the resultant hybrid is a pure-line single cross.
Claim 6
Independent Claim
21 words
The method defined in claims 1, 2, or 3 in which the resultant hybrid is a closely related sister-line single cross.
Claim 7
Independent Claim
23 words
The method defined in claims 1, 2 or 3 in which the resultant hybrid is a widely modified single cross or three-way cross.
Claim 8
Independent Claim
17 words
The method defined in claims 1, 2 or 3 in which the resultant hybrid is a double-cross.
References Cited (Backward Citations)
US2753663A
Cited
US4051629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |