Hybrid Corn Variety Breeding for Uniformity and Controlled Cross-Pollination

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Solution Overview

Problem

Existing corn breeding methods struggle to develop hybrids with uniformity and stability, incorporating desirable traits such as yield, disease resistance, and drought tolerance, while maintaining genetic diversity and avoiding self-pollination.

Innovation Solution

The development of the hybrid corn variety CH010485, which includes cytoplasmic or nuclear factors for male sterility, genetic modifications for traits like herbicide resistance, and a method for controlled cross-pollination using emasculation and bagging techniques, along with genetic editing tools like CRISPR-Cas systems to introduce specific alleles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If self-pollination is allowed in corn breeding, then genetic uniformity is improved, but genetic diversity deteriorates

Engineering Contradiction:

Improvegenetic uniformityVSAvoidgenetic diversity

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The breeding population is divided into separate male and female parent groups. Male parents are detasseled (removed of tassel structures) to prevent self-pollination, while female parents retain silks for receiving pollen. This segmentation ensures cross-pollination between different parental lines, maintaining genetic diversity while producing uniform hybrid progeny.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If cross-pollination is used to develop hybrid varieties, then genetic diversity is improved, but uniformity in progeny deteriorates

Engineering Contradiction:

Improvegenetic diversityVSAvoiduniformity in progeny

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

Parental lines are pre-selected and stabilized through multiple generations of self-pollination to achieve homozygosity and uniformity before crossing. This preliminary action ensures that when cross-pollination occurs, the resulting hybrid progeny exhibit uniform phenotypic characteristics while maintaining the genetic diversity benefits of cross-breeding.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If multiple breeding methods are combined to incorporate desirable traits, then trait diversity is improved, but breeding complexity deteriorates

Engineering Contradiction:

Improvetrait diversityVSAvoidbreeding program complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple breeding approaches (self-pollination for homozygosity, cross-pollination for hybrid vigor, detasseling for controlled crossing) are merged into a unified breeding program. This integration allows simultaneous achievement of trait diversity through controlled crosses while managing complexity through standardized procedures and clear separation of male and female parent roles.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12593779B2Plants and seeds of hybrid corn variety CH010485

Publication Date: 2026.04.07 MONSANTO TECHNOLOGY LLC

AI summary

According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010485. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010485, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010485 with itself or with another corn plant, such as a plant of another variety. The disclosure further relates to genetic complements of plants of variety CH010485.