Soybean Variety DLL0840 Molecular Marker Selection
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Solution Overview
Problem
Soybean breeding faces challenges in predicting phenotypic expression due to genetic complexity and environmental factors, making it difficult to reproduce stable, high-yielding varieties consistently.
Innovation Solution
Development of the soybean variety DLL0840, which includes a transgene conferring herbicide resistance and other desirable traits, allowing for self-pollination, backcrossing, and hybrid production to create plants with superior characteristics, along with methods for tissue culture and genetic transformation to introduce specific genes for resistance, nutritional enhancement, and industrial usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop soybean varieties, then variety diversity can be achieved, but phenotypic expression cannot be predicted due to genetic complexity and environmental factors
Solution Approach 1:
The patent replaces traditional phenotype-based selection with molecular marker-assisted selection. Specific DNA markers (e.g., SSR markers like EXS002, EXS003) are used to directly detect and select for desired traits at the genetic level, eliminating the uncertainty of phenotypic expression while maintaining breeding efficiency and variety diversity.
2Stability of the object's composition
If multiple breeding generations are performed to stabilize traits, then variety stability can be improved, but breeding time and complexity increase
Solution Approach 1:
The patent performs preliminary selection at the molecular level in early breeding generations using DNA markers to identify plants with desired genetic compositions. This allows breeders to make informed decisions early in the breeding process, reducing the number of generations needed to stabilize traits and accelerating variety development while maintaining stability.
3Adaptability or versatility
If conventional breeding approaches are used, then natural genetic variation is maintained, but specific desirable traits cannot be consistently reproduced
Solution Approach 1:
The patent implements a feedback mechanism where DNA marker results directly guide breeding decisions. By continuously monitoring the genetic composition of breeding populations using molecular markers and adjusting selection criteria based on marker data, the system ensures consistent reproduction of desired traits while maintaining overall genetic variation through controlled crossing strategies.
Data Source
AI summary
The soybean variety DLL0840 is disclosed. The invention relates to seeds, plants, plant cells, plant tissue, harvested products and soybean lint as well as to hybrid soybean plants and seeds obtained by repeatedly crossing plants of variety DLL0840 with other plants. The invention also relates to plants and varieties produced by the method of essential derivation from plants of DLL0840 and to plants of DLL0840 reproduced by vegetative methods, including but not limited to tissue culture of regenerable cells or tissue from DLL0840.