US 7,741,545 B1 · Maize variety X6K203

Abstract

A novel maize variety designated X6K203 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. proprietary inbred maize varieties. Methods for producing a maize plant that comprises crossing maize variety X6K203 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X6K203 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the maize variety X6K203, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X6K203. This invention further relates to methods for producing maize varieties derived from maize variety X6K203 and to the maize varieties derived by the use of those methods.

Claims20

Dependent claims

A maize variety X6K203, produced by crossing a first plant of variety GE4902490 with a second plant of variety GE7143418, wherein representative seed of said varieties GE4902490 and GE7143418 have been deposited under ATCC Accession Number PTA-10661 and PTA-10662, respectively.

A process of producing a conversion of maize variety X6K203 comprising at least one new trait, the process comprising:

(a) crossing a first maize inbred variety parent plant selected from the group consisting of variety GE4902490 and variety GE7143418, representative seed of which have been deposited under ATCC Accession Number(s) as PTA-10661 and PTA-10662 respectively, with plants of another maize variety that comprise at least one new trait to produce F1 seed;
(b) harvesting and planting the F1 seed to produce at least one progeny plant of the F1 generation, said progeny plant comprising the at least one new trait;
(c) crossing the at least one progeny plant with said maize inbred variety parent plant to produce backcross progeny seed;
(d) harvesting and planting the backcross progeny seed to produce at least one backcross progeny plant, said backcross progeny plant comprising the at least one new trait;
(e) repeating steps (c) and (d) for at least three additional generations to produce at least a first progeny plant, wherein said first progeny plant comprises the at least one new trait;
(f) crossing the progeny plant of step (e) with a plant of the other maize inbred variety of the group consisting of variety GE4902490 and variety GE7143418 to produce a seed that produces a converted plant of variety X6K203, wherein the converted plant of variety X6K203 comprises the at least one new trait.

3 more elements

Dependencies are inferred from the claim text.

Maize variety X6K203

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Maize variety X6K203

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Abstract

Claims20