Maize hybrid variety X5K673

A process of introducing a desired trait into a maize hybrid variety X5K673 comprising:

• (a) crossing at least one of maize inbred variety parent plants GE2103177 and GE24211638, representative seed of which have been deposited under ATCC Accession Number(s) as PTA-10158 and PTA-10159 respectively, with plants of another maize variety that comprise a desired trait to produce F1 progeny plants, wherein the desired trait is selected from the group consisting of male sterility, site-specific recombination, increased transformability, abiotic stress tolerance, herbicide resistance, insect resistance, resistance to bacterial, fungal, nematode or viral disease, altered phosphorus, altered antioxidants, altered fatty acids, altered essential amino acids and altered carbohydrates;
• (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 maize inbred variety parent plant to produce backcross progeny plants;
• (d) selecting for backcross progeny plants that comprise the desired trait and the morphological and physiological characteristics of said maize inbred variety parent plant to produce selected backcross progeny plants;
• (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 desired trait:
• (f) crossing the progeny plant of step (e) with a plant of the other maize inbred variety of the group consisting of variety GE2103177 and GE24211638 to produce a seed that produces a converted plant of a maize hybrid variety X5K673, where the converted plant of variety X5K673 comprises the desired trait and all of the morphological and physiological characteristics of maize hybrid variety X5K673 listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.