Hybrid Corn CH21159 Breeding Segmentation

Solution Overview

Problem

Corn breeding techniques face challenges in developing uniform hybrid plants with desirable traits such as high yield, disease resistance, and uniformity, as existing methods often result in unpredictable performance due to genetic non-uniformity among hybrid plants.

Innovation Solution

The development of the hybrid corn variety CH211159, which incorporates cytoplasmic or nuclear factors for male sterility and desired traits like herbicide resistance, insect resistance, and disease resistance, using techniques such as backcrossing and genetic transformation to introduce specific genetic loci, ensuring consistent performance and uniformity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cross-pollination is used to develop hybrid corn plants, then genetic diversity and desirable traits are improved, but genetic uniformity and performance predictability deteriorate

Engineering Contradiction:

Improvegenetic diversityVSAvoidgenetic uniformity

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The breeding program segments the development process into distinct phases: first developing homozygous inbred parental lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce uniform F1 hybrid progeny. This segmentation allows each phase to optimize for its specific goal without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The method performs preliminary action by developing and stabilizing homozygous inbred parental lines before the actual hybrid cross. This preliminary stabilization of parent genetics ensures that the subsequent F1 hybrid generation will be uniform and predictable, resolving the contradiction between diversity and uniformity.

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but genetic diversity and adaptability deteriorate

Engineering Contradiction:

Improvegenetic uniformityVSAvoidgenetic diversity

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The breeding program segments the development process into distinct phases: first developing homozygous inbred parental lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce uniform F1 hybrid progeny. This segmentation allows each phase to optimize for its specific goal without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The inbred parental lines serve as intermediaries that bridge genetic diversity and uniformity. They are developed with high uniformity through selfing, then used as controlled parents to introduce specific desirable traits into the hybrid population, mediating between the needs for both uniformity and adaptability.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If pedigree breeding and recurrent selection are used to develop inbred plants, then desirable traits are improved, but breeding time and complexity increase

Engineering Contradiction:

Improvedesirable traitsVSAvoidbreeding time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The method performs preliminary action by developing and stabilizing homozygous inbred parental lines before the actual hybrid cross. This preliminary stabilization of parent genetics ensures that the subsequent F1 hybrid generation will be uniform and predictable, resolving the contradiction between diversity and uniformity.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9781895B1Plants and seeds of hybrid corn variety CH211159

Publication Date: 2017.10.10 MONSANTO TECHNOLOGY LLC

AI summary

According to the invention, there is provided seed and plants of the hybrid corn variety designated CH211159. The invention thus relates to the plants, seeds and tissue cultures of the variety CH211159, and to methods for producing a corn plant produced by crossing a corn plant of variety CH211159 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 CH211159.