Inbred Corn Line BS315 for Hybrid Yield and Stability
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Solution Overview
Problem
Current corn breeding methods are slow and costly, requiring expertise and numerous steps to develop new inbred and hybrid corn varieties, with existing inbred parent lines losing commercial competitiveness over time, necessitating the development of improved germplasm.
Innovation Solution
The development of a novel inbred corn line designated BS315, which contributes improved yield and stability to hybrids, along with methods for producing BS315-derived corn plants, including self-pollination, sib-pollination, and tissue culture regeneration, and the use of transgenic techniques to enhance traits such as disease resistance and insect tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional corn breeding methods are used to develop new inbred and hybrid varieties, then genetic diversity and trait improvement are achieved, but the process is slow and costly with loss of time
Solution Approach 1:
The patent applies preliminary action by pre-developing and maintaining a library of inbred corn lines with documented genetic characteristics before they are needed for hybrid production. This allows breeders to select from pre-characterized lines rather than developing new lines each time, significantly reducing the time required while maintaining genetic diversity and trait improvement goals
2Productivity
If existing inbred parent lines are used repeatedly for hybrid production, then commercial productivity is maintained, but they lose commercial competitiveness over time
Solution Approach 1:
The patent applies parameter changes by continuously introducing new inbred lines with updated genetic parameters and traits into the hybrid production system. Instead of repeatedly using the same parent lines, the system refreshes the genetic pool by incorporating new lines with improved characteristics, thereby maintaining both productivity and commercial competitiveness through parameter updates in the genetic material
3Stability of the object's composition
If new inbred corn lines are developed through extensive inbreeding, then homozygosity and line uniformity are achieved, but line vigor decreases
Solution Approach 1:
The patent applies partial action by performing inbreeding for a limited number of generations rather than extensive continuous inbreeding. This allows sufficient homozygosity and line uniformity to be achieved for stable trait expression, while avoiding the excessive inbreeding that would cause severe vigor depression. The system finds an optimal stopping point that balances homozygosity needs with vigor maintenance
4Strength
If inbred corn lines are developed for hybrid production, then hybrid vigor is restored, but additional inbreeding merely increases seed quantity without improving traits
Solution Approach 1:
The patent applies preliminary action by developing and characterizing inbred lines with superior genetic traits before using them for hybrid seed production. This ensures that when inbreeding is performed to multiply seed, the starting material already possesses the desired traits and hybrid vigor potential, so that seed multiplication also serves trait improvement rather than merely increasing quantity of inferior material
Data Source
AI summary
An inbred corn line, designated BS315, the plants and seeds of the inbred corn line BS315, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line BS315 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line BS315 with another corn line or plant and to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic corn plants produced by that method. This invention also relates to inbred corn lines derived from inbred corn line BS315, to methods for producing other inbred corn lines derived from inbred corn line BS315 and to the inbred corn lines derived by the use of those methods.