Enhancing the effectiveness of blended refuge

A method of reducing the incidence of pollination between plants grown from different seed types in a corn seed blend, the method comprising providing a corn seed blend comprising (i) a first corn seed type comprising an insect resistance transgene and (ii) a second corn seed type comprising a dominant gametophyte factor allele and lacking the insect resistance transgene, wherein the dominant gametophyte factor allele reduces pollination by pollen containing the recessive allele of that gametophyte factor when compared to a control corn seed blend comprising seed types lacking the dominant gametophyte factor allele.

A insect resistance management method for planting a refuge crop with or alongside of a transgenic insect resistant crop, the method comprises providing a corn seed blend comprising (i) a first corn seed type comprising an insect resistance transgene and (ii) a second corn seed type comprising a dominant gametophyte factor allele and that lacks the insect resistance transgene, wherein pollination by pollen carrying the recessive allele of that gametophyte factor is reduced compared to a corn seed blend comprising a refuge seed containing the same recessive gametophyte factor allele as in the transgenic insect resistant crop.

A insect resistance management method for planting a refuge crop with or alongside of a transgenic insect resistant crop, the method comprises providing (i) a first corn seed type comprising an insect resistance transgene and (ii) a second corn seed type comprising a dominant gametophyte factor allele that lacks the insect resistance transgene, wherein pollination by recessive gametophyte factor pollen is reduced compared to a corn seed blend comprising a refuge seed lacking the dominant gametophyte factor allele, and wherein the second corn seed type is planted as strips or blocks in an insect resistant corn crop field, or as an adjacent field.

A insect resistance management method for ensuring compliance with government regulations for planting a refuge crop with or alongside of a transgenic crop, the method comprises providing a corn seed blend comprising (i) a first corn seed type comprising an insect resistance transgene and (ii) a second corn seed type comprising a dominant gametophyte factor allele and that lacks the insect resistance transgene wherein pollination by recessive gametophyte factor pollen is reduced compared to a corn seed blend comprising a refuge seed lacking the dominant gametophyte factor allele.