Wheat Variety 6PLKV03B Breeding Using CRISPR and Backcrossing
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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 6PLKV03B, which involves genetic modification and locus conversion through transgenic techniques, including CRISPR/Cas system, to introduce traits like herbicide resistance, disease resistance, and improved nutritional quality, along with traditional breeding methods like backcrossing and selection to ensure stability and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional breeding methods are used to combine desirable traits, then genetic stability and uniformity are maintained, but the speed of trait combination and productivity improvement is slow
Solution Approach 1:
The patent applies preliminary action by pre-establishing a set of desirable traits (disease resistance, drought tolerance, high yield potential) in the wheat variety 6PLKV03B through advanced breeding programs before commercial deployment. This allows the variety to be ready for immediate production use, reducing the time needed to achieve trait combination compared to traditional incremental breeding approaches.
Solution Approach 2:
The patent utilizes parameter changes by modifying genetic parameters through controlled crosses and selections to achieve specific trait combinations. By changing genetic parameters (allele frequencies, gene combinations) in a directed manner, the breeding program accelerates the achievement of desired productivity traits while maintaining stability through standardized selection criteria.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then agronomic performance is improved, but genetic stability and uniformity become difficult to maintain
Solution Approach 1:
The patent applies segmentation by dividing the complex set of desirable traits into distinct genetic components that can be independently evaluated and selected. Each trait (disease resistance, drought tolerance, yield potential) is treated as a separate selection criterion, allowing the breeding program to maintain genetic stability in each component while achieving overall versatility through combination.
Solution Approach 2:
The patent implements feedback mechanisms through continuous evaluation of the wheat variety 6PLKV03B performance in field trials and controlled environments. This feedback loop allows breeders to monitor genetic stability and adjust selection criteria to maintain uniformity while preserving the combined desirable traits across generations.
3Productivity
If transgenic techniques and locus conversion are used to introduce new traits, then the speed of trait introduction is accelerated, but complexity of the breeding process increases
Solution Approach 1:
The patent uses an intermediary approach by employing controlled crossbreeding programs as mediators between traditional breeding and transgenic techniques. The intermediate steps include backcrossing and selection processes that bridge the gap between introducing new genetic material and achieving stable, uniform varieties, thereby managing the complexity through structured intermediate stages.
Data Source
AI summary
A wheat variety designated 6PLKV03B, the plants and seeds of wheat variety 6PLKV03B, methods for producing a wheat plant produced by crossing the variety 6PLKV03B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PLKV03B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PLKV03B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PLKV03B and to wheat varieties or breeding lines produced by those methods are also provided.