Soybean Cultivar Breeding With Marker-Assisted Trait Stabilization

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Solution Overview

Problem

The development of new soybean cultivars is unpredictable and requires intensive research due to vast genetic diversity and self-pollination, making it challenging to produce consistent and desirable genetic traits efficiently.

Innovation Solution

The introduction of specific soybean cultivars (CW1660188, EW1660376, CW1660229, CW1660193, CW1660068, EW1660140, CW1660195, EW1660025, and EW1660054) with transgenes for herbicide resistance, disease resistance, and altered oil profiles, combined with breeding methods like marker-assisted selection and site-specific recombination, allows for targeted trait introduction and consistent trait expression.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional breeding methods are used to develop new soybean cultivars, then genetic diversity is maintained, but the process becomes highly unpredictable and requires intensive research

Engineering Contradiction:
Improvepredictability of trait expressionVSAvoidbreeding process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses molecular markers as intermediaries to bridge the gap between visible traits and underlying genes. These markers serve as detectable signals that allow breeders to track specific genetic traits through generations without having to wait for phenotypic expression, thereby making the breeding process more predictable and less complex

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces traditional mechanical/visual selection methods with molecular-level detection techniques. Instead of observing physical traits and manually selecting plants, the invention uses DNA-based marker analysis to automatically identify and track desired genetic traits, substituting biochemical processes for mechanical selection procedures

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Stability of the object's composition

If self-pollination is utilized in soybean breeding, then genetic stability is maintained, but cross-pollination is rare and limits genetic diversity

Engineering Contradiction:
Improvegenetic stabilityVSAvoidgenetic diversity
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent performs preliminary identification of desired genetic traits using molecular markers before crossing occurs. By pre-screening parent plants for specific marker profiles, the invention ensures that only plants with the desired genetic composition are used in cross-pollination, thereby maintaining genetic stability while enabling targeted introduction of diversity

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements a feedback mechanism where molecular marker analysis results from previous generations inform subsequent breeding decisions. The marker data provides feedback on the genetic composition of progeny, allowing breeders to selectively advance only those plants that exhibit the desired trait combinations, thus balancing stability and diversity

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If vast genetic diversity exists in soybean material, then trait selection possibilities increase, but the breeder cannot produce the same cultivar twice

Engineering Contradiction:
Improvetrait selection possibilitiesVSAvoidreproducibility of cultivar
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent creates a molecular 'copy' or fingerprint of the desired cultivar using specific marker profiles. Once a successful cultivar is developed, its marker profile serves as a reference copy that can be used to verify and reproduce the same genetic composition in future breeding efforts, ensuring reproducibility despite genetic diversity

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent changes the parameter of measurement from observable phenotypic traits to molecular marker profiles. By defining cultivars based on specific marker allele combinations rather than physical characteristics, the invention enables precise identification and reproduction of genetic compositions, making cultivar reproduction reliable even amidst genetic diversity

Inventive Principle:
Principle #35Parameter changes

4Reliability

If intensive research and development are invested in soybean breeding, then new cultivars can be developed, but the process is time-consuming and resource-intensive

Engineering Contradiction:
Improvesuccess rate of cultivar developmentVSAvoidbreeding cycle duration
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent performs preliminary genetic analysis using molecular markers at early breeding stages, allowing for early identification of promising plant lines. This preliminary screening prevents investment of extensive time and resources in lines that will not exhibit desired traits, thereby reducing overall breeding cycle time while maintaining high success rates

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20250386791A1Soybean cultivar
Publication Date: 2025.12.25 SYNGENTA CROP PROTECITON AG

AI summary

The present invention is in the field of soybean variety CW1660188, EW1660376, CW1660229, CW1660193, CW1660068, EW1660140, CW1660195, EW1660025, AND/OR EW1660054 breeding and development. The present invention particularly relates to the soybean variety CW1660188, EW1660376, CW1660229, CW1660193, CW1660068, EW1660140, CW1660195, EW1660025, AND/OR EW1660054 and its seed, cells, germplasm, plant parts, and progeny, and methods of using CW1660188, EW1660376, CW1660229, CW1660193, CW1660068, EW1660140, CW1660195, EW1660025, AND/OR EW1660054 in a breeding program.