Inbred maize line PHB18
AssigneePioneer Hi-Bred International, Inc.
InventorsLora L. Kilgore-Norquest, Terry Ray Colbert
Life of this patent
Estimating the term…
Abstract
An inbred maize line, designated PHB18, the seeds and plants of inbred maize line PHB18, methods for producing a maize plant, either inbred or hybrid, produced by crossing the inbred maize line PHB18 with another maize plant, and seed and plants produced therefrom. The invention also relates to methods for producing a modified PHB18 maize plant that comprises in its genetic material one or more transgenes or backcross conversion genes and to the transgenic and backcross conversion maize plants produced by these methods. This invention also relates to methods for producing other inbred and hybrid maize lines derived from inbred maize line PHB18 and to the inbred and hybrid maize lines so produced.
Claims31
Seed of maize inbred line designated PHB18, representative seed of said line having been deposited under ATCC Accession No. PTA-4875.
A maize plant, or a part thereof, having all the physiological and morphological characteristics of the inbred line PHB18, representative seed of said line having been deposited under ATCC Accession No. PTA-4875.
A method of introducing a desired trait into maize inbred line PHB18 comprising:
- (a) crossing PHB18 plants grown from PHB18 seed, representative seed of which has been deposited under ATCC Accession No. PTA-4875, with plants of another maize line that comprise 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 F1 progeny plants that have the desired trait to produce selected F1 progeny plants;
- (c) crossing the selected progeny plants with the PHB18 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 PHB18 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 the desired trait and all of the physiological and morphological characteristics of maize inbred line PHB18 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 maize inbred line PHB18 comprising:
- (a) crossing PHB18 plants grown from PHB18 seed, representative seed of which has been deposited under ATCC Accession No. PTA-4875, 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, fructosyltransferase, 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 PHB18 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 PHB18 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 PHB18 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.