Soybean D4201139 Breeding via Molecular Marker Selection
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Solution Overview
Problem
The development of new soybean varieties is a time-consuming and unpredictable process due to the complexity of combining desirable traits such as higher seed yield, disease resistance, and environmental adaptability, with conventional breeding methods lacking control over genetic combinations and requiring extensive resources and time.
Innovation Solution
The soybean variety D4201139 is developed through specific breeding methods, including crossing and selection techniques, which allows for the introduction of desirable traits like herbicide resistance, disease resistance, and improved nutritional quality, and can be used in various breeding protocols to produce hybrid seeds and plants with consistent performance across different environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional breeding methods are used to develop new soybean varieties, then desirable traits such as higher seed yield, disease resistance, and environmental adaptability can be combined, but the process is time-consuming and unpredictable
Solution Approach 1:
The patent applies parameter changes by transitioning from conventional phenotypic selection to molecular marker-assisted selection. Specific DNA markers (e.g., Rps1c for brown stem rot resistance, SCN race 3 susceptibility) are used to identify and select plants with desired genetic traits at the molecular level, enabling predictable inheritance patterns and significantly reducing the time required to develop new varieties with confirmed resistance and yield characteristics
2Manufacturing precision
If conventional breeding methods are used, then genetic combinations can be explored, but the process requires extensive resources and lacks control over genetic combinations
Solution Approach 1:
The patent replaces the mechanical/phenotypic selection process with a molecular biology-based system. DNA markers and molecular genetics provide precise control over trait inheritance, allowing breeders to selectively combine specific genes (e.g., herbicide resistance genes, disease resistance loci) without relying on random phenotypic expression, thereby simplifying the overall breeding strategy while increasing precision
Solution Approach 2:
The patent introduces molecular markers as intermediaries between the desired traits and the selection process. These markers (such as Rps1c for brown stem rot resistance or specific allele markers for herbicide resistance) serve as detectable proxies for the actual traits, enabling precise tracking and control of genetic combinations throughout the breeding program
3Measurement precision
If replicated observations are made to identify superior plants, then genetic worth can be better estimated, but the process becomes more time-consuming
Solution Approach 1:
The patent applies preliminary action by performing DNA marker analysis and molecular characterization early in the breeding process, before field trials are completed. By genotyping plants for specific markers (e.g., Rps1c, SCN race 3 susceptibility, herbicide resistance alleles) at the seed or seedling stage, the genetic worth can be accurately estimated without requiring multiple years of replicated field observations, significantly reducing the time needed for selection
Data Source
AI summary
The invention relates to the soybean variety designated D4201139. Provided by the invention are the seeds, plants and derivatives of the soybean variety D4201139. Also provided by the invention are tissue cultures of the soybean variety D4201139 and the plants regenerated therefrom. Still further provided by the invention are methods for producing soybean plants by crossing the soybean variety D4201139 with itself or another soybean variety and plants produced by such methods.