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US 8,575,429 B2Granted
Plant seed mixtures
AssigneeCrop Protection Services, Inc.
InventorsGregory St. Clair, Rex R. Raque
Life of this patent
Estimating the term…
Abstract
Plant seed compositions are disclosed that comprise a herbicide-resistant variety as a major component and two or more additional varieties as minor components. One of the minor varieties is herbicide-resistant. Each variety is phenotypically distinguishable from all other varieties in the seed mixture.
Claims16
An article of manufacture, comprising:
- (a) packaging material;
- and
- (b) plant seeds within said packaging material, wherein said article is formulated to contain about 90 to about 99.8 percent seeds of a first variety of a plant species, about 0.5 to about 5 percent seeds of a second variety of the plant species, and about 0.5 to about 5 percent seeds of a third variety of the plant species, wherein plants of said first variety and said third variety exhibit resistance to the same herbicide, wherein plants of said second variety exhibit sensitivity to said herbicide, and wherein said plants of said first, second, and third varieties are phenotypically distinguishable from each other.
A method for determining whether a group of crop plants was grown from a first generation seed composition or a second generation seeds composition, said method comprising:
- determining that said group of crop plants was grown from a first generation seed composition that comprises about 90 to about 99.8 percent seeds of a first variety, about 0.1 to about 5 percent seeds of a second variety and about 0.1 to about 5 percent seeds of a third variety when the expected proportion of a phenotypic marker associates with said second variety and the expected proportion of a phenotypic marker associated with said third variety are observed in said group of crop plants, said determining occurring prior to application of a herbicide to said group of crop plants, wherein plants of said first variety and said third variety exhibit resistance to said herbicide and are phenotypically distinguishable from each other, and wherein said second variety exhibits sensitivity to said herbicide and is phenotypically distinguishable from said first and third varieties;
- or
- determining that said group of crop plants was grown from a second generation seed composition that comprises about 90 to about 99.95 percent seeds of said first variety, and about 0.05 to about 10 percent seeds of said third variety when significantly less than the expected proportion of a phenotypic marker associated with said second variety and the expected proportion of a phenotypic marker associated with said third variety are observed among said group of crop plants, said determining occurring prior to application of said herbicide to said group of crop plants.
A method for determining whether a group of crop plants has received an application of herbicide, comprising:
- (a) determining that said crop plants, grown from seeds comprising about 90 to about 99.8 percent seeds of a first variety, about 0.1 to about 5 percent seeds of a second variety and about 0.1 to about 5 percent seeds of a third variety have not received an effective application of herbicide when the expected percentage of said crop plants have a phenotypic marker associated with said second variety and the expected percentage of said plants have a phenotypic marker associated with said third variety, wherein plants of said first variety and said third variety exhibit resistance to the same herbicide and are phenotypically distinguishable from each other, and plants of said second variety exhibit sensitivity to said herbicide and are phenotypically distinguishable from said first and third varieties;
- or determining that said crop plants grown from said seeds have received an effective application of herbicide when significantly less than the expected percentage of said crop plants have a phenotypic marker associated with said second variety and the expected percentage of said crop plants have a phenotypic marker associated with said third variety.
Dependencies are inferred from the claim text.