Wheat Variety Breeding for Stable Multi-Trait Performance
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Solution Overview
Problem
Existing wheat varieties often lack a combination of desirable traits such as higher seed yield, disease resistance, drought tolerance, and improved milling properties, making them less adaptable to various agricultural conditions and uses.
Innovation Solution
Development of the wheat variety 6PYYE76B, which is homozygous and stable, incorporating traits like disease resistance, drought tolerance, and altered milling properties through genetic modification and breeding techniques, including locus conversions and transgenic approaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to combine multiple desirable traits, then the complexity of the breeding program increases significantly, but the ability to achieve uniform combination of disease resistance, yield, and milling properties is limited
Solution Approach 1:
The patent employs locus conversion to change specific genetic parameters at targeted loci while maintaining the rest of the genome. This allows precise modification of individual traits (disease resistance, milling properties) without affecting other characteristics, thereby combining multiple desirable traits without proportionally increasing program complexity.
Solution Approach 2:
The breeding approach segments the genome into manageable units by focusing on specific loci rather than attempting to manage the entire genome simultaneously. This segmentation allows independent improvement of individual traits through targeted locus conversion, making the overall breeding program more tractable despite the multiple traits being pursued.
2Stability of the object's composition
If multiple generations of breeding are performed to stabilize traits, then the time required for variety development increases, but achieving homozygosity and stability becomes more complete
Solution Approach 1:
Locus conversion performs the stabilization action preliminarily at the molecular level before field testing. By establishing homozygosity at specific loci through conversion rather than requiring multiple generations of segregation and selection, the method achieves genetic stability faster, reducing the time loss associated with traditional multi-generational breeding.
3Manufacturing precision
If genetic modification techniques are used to introduce new traits, then the precision of trait introduction improves, but the complexity of regulatory and safety considerations increases
Solution Approach 1:
The patent applies genetic modification with local quality by targeting specific loci rather than introducing random or genome-wide changes. This localized approach introduces traits with high precision at defined genomic positions, which simplifies regulatory assessment compared to whole-genome modifications, as the changes are confined to specific, characterizable locations.
Data Source
AI summary
A wheat variety designated 6PYYE76B, the plants and seeds of wheat variety 6PYYE76B, methods for producing a wheat plant produced by crossing the variety 6PYYE76B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PYYE76B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PYYE76B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PYYE76B and to wheat varieties or breeding lines produced by those methods are also provided.