Soybean Cultivar SJ1210059 Marker-Assisted Breeding
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Solution Overview
Problem
Soybean breeding is challenging due to the genetic complexity and self-pollination nature of soybeans, making it difficult to develop new cultivars with desired traits such as herbicide resistance, disease resistance, and improved yield, as breeders need to manually intervene in pollination and rely on intensive research to achieve consistent results.
Innovation Solution
The development of soybean cultivar SJ1210059, which carries transgenes for herbicide resistance, disease resistance, and other desirable traits, along with methods for introducing these traits through crossing and selection techniques, such as marker-assisted breeding, to produce progeny with improved genetic profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual pollination intervention is used to develop new soybean germplasm, then desired traits can be introduced, but the breeding process becomes labor-intensive and time-consuming
Solution Approach 1:
The patent replaces manual mechanical pollination intervention with molecular marker-assisted selection systems. DNA markers are used to identify and track desired traits genetically, eliminating the need for labor-intensive manual cross-pollination and phenotypic screening, thereby dramatically reducing breeding time while maintaining trait diversity
Solution Approach 2:
The patent introduces molecular markers as intermediary tools that mediate between parental genotypes and progeny selection. These markers serve as genetic signposts that allow breeders to indirectly select for desired traits without direct manual intervention in pollination processes, accelerating the breeding cycle
2Adaptability or versatility
If extensive genetic combinations are explored to achieve desired traits, then trait variety increases, but the complexity of selection and evaluation increases
Solution Approach 1:
The patent replaces complex phenotypic evaluation systems with molecular marker-based genetic analysis. Instead of manually evaluating numerous phenotypic traits across multiple generations, DNA markers directly identify the presence and combination of desired genetic traits, simplifying the selection process while exploring extensive genetic combinations
Solution Approach 2:
The patent segments the complex breeding program into distinct molecular marker-assisted selection steps for different trait categories (yield, disease resistance, quality). This segmentation allows systematic management of genetic combinations by addressing each trait category independently through specific marker panels, reducing overall program complexity
3Stability of the object's composition
If repeated selfing and selection are performed to form homozygous lines, then genetic stability is achieved, but the breeding timeline extends significantly
Solution Approach 1:
The patent replaces repeated phenotypic selection and selfing with molecular marker-assisted homozygosity detection. DNA markers identify when lines have achieved sufficient homozygosity, allowing breeders to stop selfing earlier than traditional methods require, thereby achieving genetic stability in fewer generations and reducing overall breeding time
Solution Approach 2:
The patent implements molecular marker feedback systems that monitor genetic composition during each selfing generation. This feedback allows real-time assessment of homozygosity progress and adjusts breeding decisions accordingly, optimizing the number of selfing cycles needed to achieve genetic uniformity without unnecessary time delays
Data Source
AI summary
The present invention is in the field of soybean variety SJ1210059 breeding and development. The present invention particularly relates to the soybean variety SJ1210059 and its progeny, and methods of making SJ1210059.