Hybrid Corn CH327469 Breeding Segmentation

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Solution Overview

Problem

Current corn breeding techniques face challenges in developing uniform hybrid varieties with desirable traits such as high yield, disease resistance, and uniform germination due to genetic non-uniformity and unpredictability in cross-pollination, requiring the development of stable inbred plants and specific breeding methods.

Innovation Solution

The development of the hybrid corn variety CH327469, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmically-inherited traits and genetic transformation techniques to introduce desired characteristics, and a method for producing hybrid seeds through controlled cross-pollination to prevent self-pollination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cross-pollination is used to develop corn hybrids, then genetic diversity and desirable traits can be combined, but genetic non-uniformity and unpredictability occur in the resulting hybrids

Engineering Contradiction:

Improvegenetic diversityVSAvoidgenetic uniformity

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The breeding process is segmented into distinct phases: developing homozygous inbred lines through self-pollination (for uniformity) and then crossing these stabilized lines (for diversity). This segmentation allows each phase to optimize for its specific goal without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Homozygous inbred lines are developed and stabilized through multiple generations of self-pollination before the actual hybrid crossing occurs. This preliminary stabilization of parental lines ensures that when crossing occurs, the resulting hybrids exhibit predictable and uniform performance.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If self-pollination is used to develop inbred lines, then genetic uniformity is achieved, but time and generations required for breeding increase

Engineering Contradiction:

Improvegenetic uniformityVSAvoidbreeding time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

Self-pollination is applied continuously across multiple generations without interruption to achieve complete homozygosity. This continuous application of the self-pollination mechanism ensures thorough genetic stabilization, creating truly uniform inbred lines that will perform predictably when crossed.

Inventive Principle:

Principle #20Continuity of useful action

3Adaptability or versatility

If traditional breeding methods are used to combine desirable traits, then multiple traits can be integrated, but performance predictability and uniformity decrease

Engineering Contradiction:

Improvetrait combinationVSAvoidperformance predictability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The invention uses homozygous inbred lines as parental materials, which are genetically homogeneous and uniform. When these uniform lines are crossed, the resulting F1 hybrids exhibit consistent and predictable performance because both parents contribute stable, uniform genetic material rather than heterogeneous populations.

Inventive Principle:

Principle #33Homogeneity

Data Source

PatentUS8937231B2Plants and seeds of hybrid corn variety CH327469

Publication Date: 2015.01.20 MONSANTO TECHNOLOGY LLC

AI summary

According to the invention, there is provided seed and plants of the hybrid corn variety designated CH327469. The invention thus relates to the plants, seeds and tissue cultures of the variety CH327469, and to methods for producing a corn plant produced by crossing a corn plant of variety CH327469 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH327469.