US4077157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybridization of soybeans via the leaf-cutter bee
Assignee: DeKalb Genetics Corp
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Filing: 1976-05-10
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Granted: 1978-03-07
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Expires: 1996-05-10
Abstract
Abstract A process for the efficient production of seed capable of growing F 1 hybrid L. plants comprising the steps of: (a) growing a first population of normal soybean plants characterized by relatively large seeds in pollinating proximity to a second population of soybean plants characterized by delayed pollen release and relatively smaller seeds, each of said populations being of the closed floret types; (b) exposing the two plant populations to a population of leaf-cutter bees (Megachile rotundata L.); (c) harvesting the seed crop which is formed on said plants of said second population; and (d) recovering from said harvested seed crop the relatively larger seed resulting from cross-pollination.
Inventors
- 👤 Norman R. Bradner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:37
CPC Classifications
A; A01; A01H; A01H1/00; A01H1/02; Y; Y10; Y10S; Y10S47/00; Y10S47/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
A process for the efficient production of seed capable of growing F 1 hybrid soybean plants comprising the steps of: (a) growing a first population of normal soybean plants in pollinating proximity to a second population of soybean plants characterized by delayed pollen release, each of said populations being of the closed floret type and said first population being characterized by relatively larger seeds than those of said second population upon self-pollination; (b) exposing the two plant populations to a population of leaf-cutter bees (Megachile rotundata L.) sufficiently large to cause extensive cross-pollination; (c) harvesting the seed crop which is formed on said plants of said second population; and (d) recovering from said harvested seed crop the relatively larger seed resulting from cross-pollination.
Claim 2
Dependent Claim
123 words
A process for the efficient production of seed capable of growing F 1 hybrid soybean plants comprising the steps of: (a) growing a first population of normal soybean plants in pollinating proximity to a second population of soybean plants characterized by delayed pollen release, each of said populations being of the closed floret type and said first population being characterized by relatively larger seeds than those of said second population upon self-pollination; (b) exposing the two plant populations to a population of leaf-cutter bees (Megachile rotundata L.) sufficiently large to cause extensive cross-pollination; (c) harvesting the seed crop which is formed on said plants of said second population; and (d) recovering from said harvested seed crop the relatively larger seed resulting from cross-pollination.
Claim 3
Dependent Claim
17 words
A process according to claim 1 wherein said first and second populations are grown in alternating strips.
Claim 4
Dependent Claim
39 words
A process according to claim 1 wherein at least a portion of said seed recovered in step d is planted, the resulting F 1 hybrid plants are allowed to self-pollinate, and the thus formed F 2 seed is harvested.
Claim 5
Dependent Claim
32 words
A process according to claim 1 wherein the average seed weight of said first population exceeds the average seed weight of said second population by at least 6 grams per 100 seeds.
References Cited (Backward Citations)
US3903645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |