US 7,256,331 B2 · Hybrid maize plant and seed 39B93

Abstract

A novel hybrid maize variety designated 39B93 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. proprietary inbred maize lines. Methods for producing a maize plant that comprises crossing hybrid maize variety 39B93 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 39B93 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the hybrid seed 39B93, the hybrid plant produced from the seed, and variants, mutants, and trivial modifications of hybrid 39B93. This invention further relates to methods for producing maize lines derived from hybrid maize variety 39B93 and to the maize lines derived by the use of those methods.

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Claims32

Dependent claims

A seed of hybrid maize variety designated 39B93, representative seed of said variety having been deposited under ATCC Accession No:

PTA-8455.

A process of introducing a desired trait into a hybrid maize variety 39B93 comprising:

(a) crossing at least one of inbred maize parent plants GE760270 and GE2144056, representative seed of which have been deposited under ATCC Accession Nos:
as PTA-8454 and PTA-8453 respectively, 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, site-specific recombination, increased transformability and abiotic stress tolerance;
(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 to produce selected backcross progeny plants;
(e) repeating steps (c) and (d) three or more times in succession to produce a selected fourth or higher backcross progeny plants;
and
(f) crossing said fourth or higher backcross progeny plant with the other inbred maize parent plant to produce a hybrid maize variety 39B93 that comprises the desired trait and all of the morphological and physiological characteristics of hybrid maize variety 39B93 listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.

5 more elements

A process of introducing a desired trait into a hybrid maize variety 39B93 comprising:

(a) crossing at least one of inbred maize parent plants GE760270 and GE2144056, representative seed of which have been deposited under ATCC Accession Nos:
as PTA-8454 and PTA-8453 respectively, 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 herbicide resistance, insect resistance, and disease resistance;
(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 to produce selected backcross progeny plants;
(e) repeating steps (c) and (d) three or more times in succession to produce a selected fourth or higher backcross progeny plants;
and
(f) crossing said fourth or higher backcross progeny plant with the other inbred maize parent plant to produce a hybrid maize variety 39B93 that comprises the desired trait and all of the morphological and physiological characteristics of hybrid maize variety 39B93 listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.

5 more elements

A process of introducing altered grain characteristics into a hybrid maize variety 39B93 comprising:

(a) crossing at least one of inbred maize parent plants GE760270 and GE2144056, representative seed of which have been deposited under ATCC Accession Nos:
as PTA-8454 and PTA-8453 respectively, 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 altered phosphorus, antioxidants, fatty acids, essential amino acids and carbohydrates;
(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 to produce selected backcross progeny plants;
(e) repeating steps (c) and (d) three or more times in succession to produce a selected fourth or higher backcross progeny plants;
and
(f) crossing said fourth or higher backcross progeny plant with the other inbred maize parent plant to produce a hybrid maize variety 39B93 that comprises the desired trait and all of the morphological and physiological characteristics of hybrid maize variety 39B93 listed in Table 1 as determined at the 5% significance level when grown in the same environmental conditions.

5 more elements

Dependencies are inferred from the claim text.

Description22,828 words

Summary9,021 words

#This invention relates generally to the field of maize breeding, specifically relating to hybrid maize designated 39B93.

#The goal of plant breeding is to combine, in a single variety or hybrid, various desirable traits. For field crops, these traits may include resistance to diseases and insects, resistance to heat and drought, reducing the time to crop maturity, greater yield, and better agronomic quality. With mechanical harvesting of many crops, uniformity of plant characteristics such as germination, stand establishment, growth rate, maturity, and plant and ear height is important. Traditional plant breeding is an important tool in developing new and improved commercial crops.

#Field crops are bred through techniques that take advantage of the plant's method of pollination. A plant is self-pollinated if pollen from one flower is transferred to the same or another flower of the same plant. A plant is sib pollinated when individuals within the same family or line are used for pollination. A plant is cross-pollinated if the pollen comes from a flower on a different plant from a different family or line. The term “cross pollination” and “out-cross” as used herein do not include self pollination or sib pollination.

Detailed description13,807 words

#All tables discussed in the Detailed Description of the Invention and Further Embodiments section can found at the end of the section.

#Maize hybrids need to be highly homogeneous, heterozygous and reproducible to be useful as commercial hybrids. There are many analytical methods available to determine the heterozygous nature and the identity of these lines.

#The oldest and most traditional method of analysis is the observation of phenotypic traits. The data is usually collected in field experiments over the life of the maize plants to be examined. Phenotypic characteristics most often observed are for traits associated with plant morphology, ear and kernel morphology, insect and disease resistance, maturity, and yield.

Facts

Application

11/343,951Filed 31 Jan 2006

Published

US 2006/0107413 A118 May 2006

Granted

14 Aug 2007

Term ended

31 Jan 2026

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification3 codes

A01H 6/4684
Gramineae or Poaceae, e.g. ryegrass, rice, wheat or maize: zea mays [maize]
A01H 5/10
Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy: seeds
A01H
New plants or non-transgenic processes for obtaining them

Hybrid maize plant and seed 39B93

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Hybrid maize plant and seed 39B93

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Abstract

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Claims32

Description22,828 words

Drawings

Classification3 codes

Life of this patent

Description22,828 words