Inbred maize line PH4GP

A method of introducing a desired trait into maize inbred line PH4GP comprising:

• (a) crossing PH4GP plant grown from PH4GP seed, representative seed of which has been deposited under ATCC Accession No. PTA-4430, with plants of another maize line that comprise a desired trait to produce F1 progeny plants, wherein that desired trait is selected from the group consisting of male sterility, herbicide resistance, insect resistance, disease resistance and waxy starch;
• (b) selecting F1 progeny plants that have the desired trait to produce selected F1 progeny plants;
• (c) crossing the selected progeny plants with the PH4GP plants to produce backcross progeny plants;
• (d) selecting for backcross progeny plants that have the desired trait and physiological and morphological characteristics of maize inbred line PH4GP listed in Table 1 to produce selected backcross progeny plants;
• and
• (c) repeating steps (c) and (d) three or more times in succession to produce selected fourth or higher backcross progeny plants that comprise the desired trait and all of the physiological and morphological characteristics of maize inbred line PH4GP 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 maize inbred line PH4GP comprising:

• (a) crossing PH4GP plants grows from PH4GP seed, representative seed of which has been deposited under ATCC Accession No. PTA-4430, with plants of another maize line that comprise a nucleic acid molecule encoding an enzyme selected from the group consisting of phytase, stearyl-ACP desaturase, fructosyltansferance, levansucrase, alpha-amylase, invertase and starch branching enzyme;
• (b) selecting F1 progeny plants that have said nucleic acid molecule to produce selected F1 progeny plants;
• (c) Crossing the selected progeny plants with the PH4GP plants to produce backcross progeny plants;
• (d) selecting for backcross progeny plants that have said nucleic acid molecule and physiological and morphological characteristics of maize inbred line PH4GP listed in Table 1 to produce selected backcross progeny plants;
• and
• (e) repeating steps (c) and (d) three or more times in succession to produce selected fourth or higher backcross progeny plants that comprise said nucleic acid molecule and have all of the physiological and morphological characteristics of maize inbred line PH4GP listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.