Hybrid Corn Variety Breeding with Controlled Pollination Stability

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Solution Overview

Problem

Existing corn breeding methods struggle to develop hybrids with uniformity and desirable traits such as increased yield, disease resistance, and improved agronomic qualities while maintaining genetic stability and efficiency in hybrid production.

Innovation Solution

The development of the hybrid corn variety CH010570, which incorporates cytoplasmic or nuclear factors for male sterility, genetic modifications for traits like herbicide resistance and disease resistance, and a method for controlled cross-pollination to ensure uniform hybrid production, along with genetic editing techniques for precise trait introduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If conventional breeding methods are used to develop corn hybrids, then genetic diversity is maintained, but uniformity in germination times, stand establishment, growth rate, and maturity is insufficient

Engineering Contradiction:
Improveuniformity in germination times, stand establishment, growth rate, and maturityVSAvoidyield
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through repeated self-pollination, then crossing these standardized lines to produce uniform F1 hybrid progeny. This segmentation allows each phase to optimize for its specific goal (purity in parents, uniformity in hybrids).

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent changes the genetic parameter state from heterogeneous natural populations to highly homozygous inbred lines (near 100% homozygosity), then to uniformly heterozygous F1 hybrids. This parameter transformation enables control over germination times, growth rate, and maturity uniformity while maintaining high yield potential through heterosis.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If repeated self-pollination is used to develop homozygous inbred plants, then genetic stability is achieved, but time to develop pure breeding lines increases

Engineering Contradiction:
Improvehomozygosity and true breeding capabilityVSAvoidgenerations required to develop inbred lines
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing repeated self-pollination and selection in advance to develop fully homozygous inbred parental lines before the hybridization step. This preliminary purification ensures that when crossing occurs, the F1 progeny inherit consistent, predictable traits from standardized parents, reducing the need for later generations of purification.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If natural wind pollination is used in corn, then cross-pollination between different plants occurs, but control over pollination and hybrid uniformity is lost

Engineering Contradiction:
Improvenatural pollination processVSAvoidcontrol over hybrid production and trait consistency
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent uses physical barriers (pollen bags, ear bags, mesh screens) as intermediaries to control the pollination process. These intermediaries selectively permit or block pollen flow, ensuring that only desired crosses occur while preventing contamination from unrelated plants. This mediator approach maintains ease of natural pollination mechanics while achieving precise control over hybrid production.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If multiple desirable traits are combined in corn breeding, then agronomic quality and resistance improve, but complexity of the breeding program increases

Engineering Contradiction:
Improveresistance to pests, diseases, and environmental stressVSAvoidbreeding program structure and evaluation processes
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The breeding program is segmented into specialized sub-programs: one for developing inbred lines with specific resistance traits, another for evaluating hybrid performance, and a third for maintaining parental lines. Each segment focuses on specific traits (e.g., disease resistance in parents, yield uniformity in hybrids), reducing overall program complexity while achieving comprehensive trait integration.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs universal breeding protocols and evaluation methods that can be applied across multiple trait combinations. Standardized procedures for self-pollination, hybridization, and performance assessment serve multiple functions: developing inbreds, producing hybrids, and evaluating various traits simultaneously. This multi-functionality reduces the complexity burden of pursuing multiple desirable traits.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12588627B2Plants and seeds of hybrid corn variety CH010570
Publication Date: 2026.03.31 MONSANTO TECHNOLOGY LLC

AI summary

According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010570. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010570, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010570 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 CH010570.