Wheat Variety 6PZUD06B Trait Stabilization via Segmentation

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Solution Overview

Problem

Current wheat breeding methods face challenges in combining desirable traits such as high seed yield, disease resistance, drought tolerance, and improved milling properties into a single wheat variety, while maintaining uniformity and stability across generations.

Innovation Solution

The development of the wheat variety 6PZUD06B, which involves genetic modification and locus conversion techniques, including transgenic approaches and backcrossing, to introduce traits like herbicide resistance, disease resistance, and altered nutritional content, while ensuring homozygosity and phenotypic stability through rigorous breeding and selection methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple desirable traits are combined into a single wheat variety through breeding, then the variety's overall performance is improved, but the complexity of the breeding process increases significantly

Engineering Contradiction:
Improvecombination of desirable traitsVSAvoidbreeding process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The breeding process is segmented into distinct phases: initial cross-breeding to combine traits, followed by systematic backcrossing to stabilize the genome, and final selection to fix desirable traits. This segmentation allows complex trait combination to be managed through structured, repeatable steps rather than uncontrolled breeding.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs preliminary action through pre-planned backcrossing schemes and predetermined selection criteria. The breeding program is designed in advance with specific generations allocated for trait stabilization, allowing systematic introduction of multiple traits without ad-hoc decision-making that会增加 complexity.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If rigorous breeding and selection methods are used to ensure homozygosity and phenotypic stability, then uniformity across generations is improved, but the time and resources required increase

Engineering Contradiction:
Improvephenotypic stabilityVSAvoidbreeding cycle duration
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The breeding program uses periodic action through scheduled backcrossing generations (typically 3-5 backcrosses) followed by selfing generations. This periodic cycle of crossing and selfing systematically reduces heterozygosity and stabilizes phenotypes over predictable time intervals, making the time investment calculable and manageable.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

Rigorous selection methods provide feedback by evaluating plants at each generation for desired traits and phenotypic consistency. This feedback loop allows breeders to monitor progress toward homozygosity and adjust the breeding schedule accordingly, optimizing the balance between stability achievement and time consumption.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If genetic modification techniques are employed to introduce specific traits, then the precision of trait introduction is improved, but the complexity of the modification process increases

Engineering Contradiction:
Improvetrait introduction precisionVSAvoidgenetic modification process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent uses molecular markers as intermediaries to track and select for desired traits during breeding. These markers serve as proxies for complex genetic modifications, allowing precise tracking of trait inheritance through conventional breeding methods without requiring complex genetic engineering procedures at each step.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex mechanical genetic engineering operations with molecular marker-assisted selection. Instead of physically manipulating genomes through multiple transformation steps, the method uses DNA markers to identify and select plants with desired traits, substituting a simpler selection mechanism for a complex modification process.

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

Data Source

PatentUS11985935B1Wheat variety 6PZUD06B
Publication Date: 2024.05.21 PIONEER HI BREED INTERNATIONAL INC

AI summary

A wheat variety designated 6PZUD06B, the plants and seeds of wheat variety 6PZUD06B, methods for producing a wheat plant produced by crossing the variety 6PZUD06B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PZUD06B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PZUD06B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PZUD06B and to wheat varieties or breeding lines produced by those methods are also provided.