Hybrid Corn CH533378 Breeding Segmentation

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Solution Overview

Problem

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 in cross-pollinated plants, requiring the development of stable inbred plants and specific breeding methods.

Innovation Solution

The development of the hybrid corn variety CH533378, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmically-inherited traits and transgenes integrated at specific chromosomal locations, and tissue cultures capable of regenerating plants with consistent physiological and morphological characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cross-pollination is used to develop corn hybrids, then genetic diversity and trait combination are improved, but genetic uniformity and predictability of performance deteriorate

Engineering Contradiction:

Improvegenetic diversityVSAvoidgenetic uniformity

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

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

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inbred parent lines are developed and standardized through multiple generations of self-pollination and selection before the hybrid crossing step. This preliminary action ensures that the parental genomes are homozygous and stable, which guarantees uniformity in the resulting hybrid progeny while still allowing for genetic diversity in the trait combinations.

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If self-pollination is used to develop inbred lines, then genetic uniformity and true breeding are 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:

Self-pollination and selection are performed as a preliminary action to develop homozygous inbred parent lines with uniform genetics. This preliminary uniformity is essential for the subsequent hybrid crossing to produce predictable and uniform progeny with desired trait combinations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Multiple inbred lines, each developed through self-pollination and possessing different desirable traits, are merged through controlled cross-pollination. This combining allows the hybrid progeny to inherit diverse traits from different parental lines while maintaining uniformity within the hybrid population.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8502022B2Plants and seeds of hybrid corn variety CH533378

Publication Date: 2013.08.06 MONSANTO TECHNOLOGY LLC

AI summary

According to the invention, there is provided seed and plants of the hybrid corn variety designated CH533378. The invention thus relates to the plants, seeds and tissue cultures of the variety CH533378, and to methods for producing a corn plant produced by crossing a corn plant of variety CH533378 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 CH533378.