Wheat Cultivar HV9W10-1002 Marker-Assisted Trait Stacking
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Solution Overview
Problem
Current wheat breeding methods face challenges in combining desirable traits such as high seed yield, disease resistance, and drought tolerance into a single wheat cultivar effectively, while also maintaining stability across generations and environments.
Innovation Solution
The development of the wheat cultivar HV9W10-1002, which is a hard red winter type bred for fall planting, incorporating a single locus conversion that can introduce transgenic genes for traits like herbicide resistance, disease resistance, and improved nutritional quality, using genetic transformation and traditional breeding techniques, along with advanced plant breeding methods like backcrossing and marker-assisted selection.
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, but the ability to effectively combine and stabilize traits across generations decreases
Solution Approach 1:
The patent segments the breeding process by using molecular markers to identify and track specific trait-associated DNA sequences independently. This allows breeders to select for multiple traits simultaneously through marker-assisted selection rather than relying on complex phenotypic evaluation of all traits together, thereby simplifying the overall breeding program while effectively combining multiple desirable traits.
Solution Approach 2:
The patent introduces molecular markers as intermediaries between the desired traits and the selection process. These markers serve as genetic tags that indirectly indicate the presence of desirable trait alleles, enabling breeders to select plants with multiple desired traits more efficiently without directly evaluating each trait's phenotypic expression, thus reducing breeding program complexity.
2Reliability
If multiple traits are combined in a single cultivar through conventional breeding, then the number of breeding generations required increases, but the stability of trait expression across environments decreases
Solution Approach 1:
The patent applies preliminary action by using molecular markers to identify and select plants carrying desired trait alleles early in the breeding process, before phenotypic expression and environmental variability can affect trait stability. This allows breeders to fix desirable traits in the genetic makeup of the cultivar through selective breeding based on marker data, ensuring stable trait expression across environments while reducing the number of generations needed compared to conventional phenotypic selection methods.
3Manufacturing precision
If genetic transformation is used to introduce specific traits, then the precision of trait introduction improves, but the regulatory and public acceptance challenges increase
Solution Approach 1:
The patent employs copying by using molecular markers that replicate the information about desired trait alleles without requiring actual genetic transformation. Instead of introducing foreign DNA through transformation, the method copies and tracks existing favorable alleles through marker-assisted selection, achieving precise trait combination while avoiding the regulatory and public acceptance issues associated with transgenic modification.
Data Source
AI summary
The invention relates to the wheat cultivar designated HV9W10-1002. Provided by the invention are the seeds, plants and derivatives of the wheat cultivar HV9W10-1002. Also provided by the invention are tissue cultures of the wheat cultivar HV9W10-1002 and the plants regenerated therefrom. Still further provided by the invention are methods for producing wheat plants by crossing the wheat cultivar HV9W10-1002 with itself or another wheat cultivar and plants produced by such methods.