US3971161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hybrid sweet corn
Assignee: SUNSEEDS Co A DELAWARE Corp
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Filing: 1975-05-27
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Granted: 1976-07-27
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Expires: 1995-05-27
Abstract
Abstract The sugar content of sweet corn can be increased without seriously reducing the water soluble polysaccharide (WSP) by using the shrunken2 (sh2) gene. Combining a sweet corn which is a homozygous sugary1 (su1) inbred with a sweet corn (homozygous su1 sh2) inbred will result in heterozygous hybrid that has approximately 50% more sucrose, 33% more total sugars and a WSP (water soluble polysaccharide) level near that of sweet corn) homozygous su1). The high WSP and sucrose levels are particularly desirable in food processing industries such as the canning and freezing industries.
Inventors
- 👤 Peter A. Bonucci
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
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A method for producing hybrid sweet corn seeds in commercial quantities comprising the steps of: a. planting a row of normal sweet corn, homozygous for su 1 , wherein said sweet corn can be genotypically represented as follows: su 1 su 1 Sh 2 Sh 2 ; b. planting a row of sugary-shrunken corn in cross-breeding proximity to said row of normal sweet corn, wherein said sugary-shrunken corn can be genotypically represented as follows: su 1 su 1 sh 2 sh 2 ; c. detasseling one of the two rows of plants resulting from steps (a) and (b), whereby the detasseled row serves as a female parent and the row with tassels remaining intact serves as a male parent; d. harvesting the F 1 ears of corn of the detasseled row to obtain commercial quantities of hybrid sweet corn from said ears of corn, said hybrid sweet corn seeds obtained from said F 1 ears of corn being heterozygous and genotypically represented as: su 1 su 1 Sh 2 Sh 2 .
Claim 2
Independent Claim
172 words
A method for producing hybrid sweet corn seeds in commercial quantities comprising the steps of: a. planting a row of normal sweet corn, homozygous for su 1 , wherein said sweet corn can be genotypically represented as follows: su 1 su 1 Sh 2 Sh 2 ; b. planting a row of sugary-shrunken corn in cross-breeding proximity to said row of normal sweet corn, wherein said sugary-shrunken corn can be genotypically represented as follows: su 1 su 1 sh 2 sh 2 ; c. detasseling one of the two rows of plants resulting from steps (a) and (b), whereby the detasseled row serves as a female parent and the row with tassels remaining intact serves as a male parent; d. harvesting the F 1 ears of corn of the detasseled row to obtain commercial quantities of hybrid sweet corn from said ears of corn, said hybrid sweet corn seeds obtained from said F 1 ears of corn being heterozygous and genotypically represented as: su 1 su 1 Sh 2 Sh 2 .
Claim 3
Dependent Claim
62 words
A method according to claim 1 wherein said hybrid sweet corn seeds are subsequently planted to obtain F 2 ears of corn each of which has phenotypically uniform kernels about 75% of which are normal sweet corn kernels, and about 25% of which can be genotypically represented as follows: su 1 su 1 su 1 sh 2 sh 2 sh 2 .
Claim 4
Dependent Claim
26 words
A method according to claim 2 wherein said kernels are mechanically removed from said F 2 ears and canned to provide a canned sweet corn product.
Claim 5
Dependent Claim
111 words
A method according to claim 2 wherein the average carbohydrate content for all the kernels of each F 2 ear, on a dry weight basis, is as follows: at least about 150% of the sucrose content in normal sweet corn kernels, at least about 130% of the total sugar content in normal sweet corn kernels, at least about 75% of the water soluble polysaccharide content of sweet corn kernels, at least 45% of the sucrose content in sugary-shrunken hybrid corn kernels, at least 50% of the total sugar content in sugary-shrunken hybrid corn kernels, and at least about 400% of the water soluble polysaccharide content of the sugary-shrunken hybrid corn kernels.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |