Wheat Variety 6PDRR94B Breeding for Trait Stability
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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 variety, while maintaining uniformity and stability across generations.
Innovation Solution
The development of the wheat variety 6PDRR94B, 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
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple desirable traits are combined into a single wheat variety through breeding, then the variety exhibits improved yield, disease resistance, and nutritional content, but the complexity of the breeding process increases significantly
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. This segmentation allows complex multi-trait combination to be achieved through manageable sequential steps rather than attempting simultaneous integration of all traits.
Solution Approach 2:
The patent employs preliminary action through pre-planned backcrossing schemes and selective breeding strategies. By preparing and executing backcrossing operations in advance with predetermined selection criteria, the breeding process systematically combines multiple traits while managing complexity through structured preliminary planning.
2Stability of the object's composition
If rigorous breeding and selection methods are used to ensure homozygosity and phenotypic stability, then uniformity and stability across generations are achieved, but the time and resources required for development increase
Solution Approach 1:
The breeding program implements periodic action through systematic backcrossing cycles and generation-based selection protocols. By conducting backcrossing operations in regular intervals and applying selection criteria at specific generational milestones, the method achieves homozygosity and phenotypic stability through rhythmic, structured breeding cycles rather than continuous unstructured selection.
Solution Approach 2:
The patent uses copying principles by repeatedly backcrossing to the recurrent parent, effectively copying the desired genomic background while introducing and stabilizing specific target traits. This iterative copying process ensures phenotypic stability by restoring the recurrent parent's genome while maintaining introduced desirable characteristics.
3Manufacturing precision
If genetic modification and locus conversion techniques are employed to introduce specific traits, then precision in trait introduction is improved, but the complexity of the technical procedures increases
Solution Approach 1:
The patent employs traditional breeding methods as intermediaries to achieve genetic modification outcomes. By using controlled cross-breeding and backcrossing as intermediary steps, the method introduces specific traits with precision while avoiding the need for direct genetic engineering techniques, thus managing technical complexity through biological mediators.
Solution Approach 2:
The breeding program utilizes parameter changes by systematically varying selection criteria, backcrossing generations, and breeding conditions to achieve precise trait introduction. By adjusting breeding parameters such as selection intensity, generation number, and crossbreeding timing, the method achieves precision in trait incorporation while managing procedural complexity through controlled parameter variation.
Data Source
AI summary
A wheat variety designated 6PDRR94B, the plants and seeds of wheat variety 6PDRR94B, methods for producing a wheat plant produced by crossing the variety 6PDRR94B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PDRR94B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PDRR94B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PDRR94B and to wheat varieties or breeding lines produced by those methods are also provided.