Wheat Variety 6PBLP40B Breeding 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 variety, while maintaining uniformity and stability across generations.
Innovation Solution
The development of the wheat variety 6PBLP40B, which involves genetic modification and locus conversion techniques, including transgenic approaches and backcrossing, to introduce traits like herbicide resistance, disease resistance, and improved nutritional quality, 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's overall performance is improved, but the complexity of the breeding process increases significantly
Solution Approach 1:
The patent segments the breeding process into distinct generations (P1, P2, P3, P4, P5, P6) with specific selection criteria for each generation. This systematic segmentation allows complex trait combination to be managed through stepwise progression, where each generation focuses on specific selection objectives rather than attempting to combine all traits simultaneously.
Solution Approach 2:
The patent performs preliminary actions by establishing specific parental lines with predetermined traits before beginning the crossing program. The P1 parent is selected for disease resistance and drought tolerance, while the P2 parent is selected for yield potential and milling quality. This preliminary characterization of parental lines simplifies the subsequent breeding process by ensuring desired traits are already present in the parental material.
2Stability of the object's composition
If rigorous breeding and selection methods are used to ensure homozygosity and phenotypic stability, then the uniformity and stability of the variety is improved, but the time required for variety development increases
Solution Approach 1:
The patent employs periodic action through a structured six-generation breeding program with repeated cycles of crossing, selfing, and selection. Each generation represents a periodic cycle where specific selection criteria are applied systematically. This periodic repetition ensures gradual accumulation of homozygosity and stabilization of phenotypic traits over time, making the stability achievement more efficient than ad hoc selection methods.
Solution Approach 2:
The patent incorporates feedback mechanisms by evaluating and selecting plants at each generation based on observed phenotypic characteristics. Selection decisions at each generation are based on feedback from previous generation performance, allowing the breeder to adjust and refine the selection process. This feedback-driven approach ensures that only plants exhibiting the desired stable phenotypes progress to the next generation, efficiently achieving homozygosity without unnecessary time delays.
3Manufacturing precision
If genetic modification and locus conversion techniques are used to introduce specific traits, then the precision of trait introduction is improved, but the difficulty of detecting and measuring the modifications increases
Solution Approach 1:
The patent uses molecular markers as intermediary tools to detect and track genetic modifications throughout the breeding process. These markers serve as measurable proxies for the actual genetic traits being selected, allowing precise detection of locus conversions and transgenic introductions without requiring direct measurement of the complex genetic modifications themselves. This intermediary approach maintains precision while making detection feasible.
Data Source
AI summary
A wheat variety designated 6PBLP40B, the plants and seeds of wheat variety 6PBLP40B, methods for producing a wheat plant produced by crossing the variety 6PBLP40B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PBLP40B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PBLP40B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PBLP40B and to wheat varieties or breeding lines produced by those methods are also provided.