Hybrid maize plant and seed 33R77
AssigneePioneer Hi-Bred International, Inc.
InventorDavid L. Benson
Life of this patent
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Abstract
According to the invention, there is provided a hybrid maize plant, designated as 33R77, produced by crossing two Pioneer Hi-Bred International, Inc. proprietary inbred maize lines. This invention relates to the hybrid seed 33R77, the hybrid plant produced from the seed, and variants, mutants, and trivial modifications of hybrid 33R77. This invention also relates to methods for producing a maize plant containing in its genetic material one or more transgenes and to the transgenic maize plants produced by that method. This invention further relates to methods for producing maize lines derived from hybrid maize line 33R77 and to the maize lines derived by the use of those methods.
Claims33
Seed of hybrid maize variety designated 33R77, representative seed of said variety having been deposited under ATCC Accession number PTA-5458.
A method of producing a male sterile hybrid maize plant comprising transforming at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited as PTA-3189 and PTA-5524 respectively, with a nucleic acid molecule that confers male sterility and crossing said inbred maize parent plants to produce said male sterile hybrid maize plant.
A method of producing an herbicide resistant hybrid maize plant comprising transforming at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited as PTA-3189 and PTA-5524 respectively, with a transgene that confers herbicide resistance to generate an herbicide resistant inbred maize parent plant and crossing said inbred maize parent plants to produce said herbicide resistant hybrid maize plant.
A method of producing an insect resistant hybrid maize plant comprising transforming at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited as PTA-3189 and PTA-5524 respectively, with a transgene that confers insect resistance to generate an insect resistant inbred maize parent plant and crossing said inbred maize parent plants to produce said insect resistant hybrid maize plant.
A method of producing a disease resistant hybrid maize plant comprising transforming at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited as PTA-3189 and PTA-5524 respectively, with a transgene that confers disease resistance to generate a disease resistant inbred maize parent plant and crossing said inbred maize parent plants to produce said disease resistant hybrid maize plant.
A method of producing a hybrid maize plant with decreased phytate content comprising transforming at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited as PTA-3189 and PTA-5524 respectively, with a transgene encoding phytase to generate an inbred maize parent plant with decreased phytate content and crossing said inbred maize parent plants to produce said hybrid maize plant that confers decreased phytate content.
A method of producing a hybrid maize plant with modified fatty acid metabolism or modified carbohydrate metabolism comprising transforming at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited as PTA-3189 and PTA-5524 respectively, with a transgene encoding a protein selected from the group consisting of stearyl-ACP desaturase, fructosyltransferase, levansucrase, alpha-amylase, invertase and starch branching enzyme to generate an inbred maize parent plant with modified fatty acid metabolism or modified carbohydrate metabolism and crossing said inbred maize parent plants to produce said hybrid maize plant that confers modified fatty acid metabolism or modified carbohydrate metabolism.
A maize plant, or a part thereof, having all the physiological and morphological characteristics of the hybrid maize plant 33R77, representative seed of said plant having been deposited under ATCC Accession No. PTA-5458.
A method of introducing a desired trait into a hybrid maize variety 33R77 comprising:
- (a) crossing at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited under ATCC Accession Nos. as PTA-3189 and PTA-5524 respectively, with another maize line that comprises a desired trait, to produce F1 progeny plants, wherein the desired trait is selected from the group consisting of male sterility, herbicide resistance, insect resistance, disease resistance and waxy starch;
- (b) selecting said F1 progeny plants that have the desired trait to produce selected F1 progeny plants;
- (c) backcrossing the selected progeny plants with said inbred maize parent plant to produce backcross progeny plants;
- (d) selecting for backcross progeny plants that have the desired trait and morphological and physiological characteristics of said inbred maize parent plant;
- (e) repeating steps (c) and (d) three or more times in succession to produce selected fourth or higher backcross progeny plants;
- (f) crossing said fourth or higher backcross progeny plant with the other inbred maize parent plant to generate a hybrid maize variety 33R77 with the desired trait and all of the morphological and physiological characteristics of hybrid maize variety 33R77 listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.
A method of modifying fatty acid metabolism, phytic acid metabolism or carbohydrate metabolism in a hybrid maize variety 33R77 comprising:
- (a) crossing at least one of inbred maize parent plants GE515419 and GE567914, representative samples of which have been deposited under ATCC Accession Nos. as PTA-3189 and PTA-5524 respectively, with another maize line that comprises a nucleic acid molecule encoding an enzyme selected from the group consisting of phytase, stearyl-ACP desaturase, fructosyltransferase, levansucrase, alpha-amylase, invertase and starch branching enzyme;
- (b) selecting said F1 progeny plants that have said nucleic acid molecule to produce selected F1 progeny plants;
- (c) backcrossing the selected progeny plants with said inbred maize parent plant to produce backcross progeny plants;
- (d) selecting for backcross progeny plants that have said nucleic acid molecule and morphological and physiological characteristics of said inbred maize parent plant;
- (e) repeating steps of (c) and (d) three or more times in succession to produce selected fourth or higher backcross progeny plants;
- (f) crossing said fourth or higher backcross progeny plant with the other inbred maize parent plant to generate a hybrid maize variety 33R77 that comprises said nucleic acid molecule and has all of the morphological and physiological characteristics of hybrid maize variety 33R77 listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.
Dependencies are inferred from the claim text.