Wheat Variety 6PJEF74B 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 agronomic characteristics in a single wheat variety, while maintaining genetic stability and uniformity.
Innovation Solution
The development of the wheat variety 6PJEF74B, which involves genetic modification and locus conversion through transgenic techniques, including the introduction of specific genes for traits like herbicide resistance, disease resistance, and altered nutritional content, along with traditional breeding methods like backcrossing and selection, to create a stable and uniform wheat line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to combine multiple desirable traits, then the number of breeding steps and intervention complexity increase, but the ability to achieve stable and uniform trait expression deteriorates
Solution Approach 1:
The patent segments the complex breeding process into distinct generations (P, F1, F2, F3, etc.) with specific selection criteria for each generation. This segmentation allows systematic combination of multiple traits through controlled crossing and selection at each stage, making the complex breeding process more manageable and predictable while achieving stable trait expression in the final variety.
2Productivity
If multiple traits are combined in a single variety, then the agronomic improvement increases, but the difficulty of maintaining genetic stability and uniformity increases
Solution Approach 1:
The patent applies preliminary action by performing extensive selection and screening in early generations (F1, F2, F3) to identify and eliminate unwanted genetic variations before the traits are fully combined. This preliminary selection ensures that only plants with stable and uniform expression of desired traits proceed to later generations, thereby maintaining genetic stability while achieving multiple trait combination.
3Manufacturing precision
If genetic modification and transgenic techniques are applied, then the precision of trait introduction improves, but the complexity of the breeding process increases
Solution Approach 1:
The patent uses backcrossing as an intermediary technique between traditional breeding and genetic modification. By crossing the genetically modified parent with the target variety and then repeatedly backcrossing the offspring to the target variety, the patent precisely introduces specific transgenic traits while recovering the majority of the target variety's genome, thereby achieving precise trait introduction with controlled process complexity.
Data Source
AI summary
A wheat variety designated 6PJEF74B, the plants and seeds of wheat variety 6PJEF74B, methods for producing a wheat plant produced by crossing the variety 6PJEF74B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PJEF74B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PJEF74B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PJEF74B and to wheat varieties or breeding lines produced by those methods are also provided.