Maize Inbred Line CI5166 for Broad Regional Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Corn breeding faces challenges in developing hybrid seeds that are uniformly adapted across the entire U.S. Corn Belt due to regional differences in growing conditions, such as Gray Leaf Spot infection, cool temperatures, and soil pH levels, which require specific agronomic traits that are difficult to combine into a single inbred line.
Innovation Solution
The development of the maize variety CI5166, which includes a method for producing hybrid seeds by crossing CI5166 with another maize plant, introducing additional traits such as increased water stress resistance, herbicide resistance, and disease resistance, and using backcrossing to stabilize these traits across generations, allowing for the creation of hybrid seeds with improved adaptability and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a single inbred line is used to produce hybrid seeds, then the hybrid seeds can be readily reproduced with uniformity, but the adaptability to different regional growing conditions deteriorates
Solution Approach 1:
The patent divides the breeding program into multiple inbred lines (first inbred line and second inbred line) that can be crossed to produce hybrid seeds. This segmentation allows different inbred lines to contribute different regional adaptability traits while maintaining hybrid uniformity through controlled crossing.
Solution Approach 2:
Different inbred lines are developed with specific local adaptations to different regional conditions (e.g., Gray Leaf Spot resistance for certain regions, cold tolerance for others). When crossed, these locally adapted traits are combined in the hybrid, allowing the hybrid to perform well across multiple regions while maintaining uniformity.
2Adaptability or versatility
If multiple agronomic traits are combined into a single inbred line, then regional adaptability improves, but the complexity of breeding and trait stabilization deteriorates
Solution Approach 1:
The patent segments the complexity by creating multiple specialized inbred lines, each optimized for specific traits or regional conditions. This divides the overall breeding complexity into manageable segments that can be developed and maintained separately, then combined through controlled crossing.
Solution Approach 2:
The inbred lines are developed to serve multiple functions: they provide regional adaptability, disease resistance, and yield characteristics. By making each inbred line multi-functional, the patent reduces the need for separate breeding programs for different traits, simplifying the overall process.
3Stability of the object's composition
If inbred plants are used directly, then homozygosity and uniformity are achieved, but plant vigor and seed yield deteriorate
Solution Approach 1:
The patent combines two homozygous inbred lines through crossing to produce hybrid seeds. This merging of two uniform genetic lines creates heterozygous hybrids that exhibit hybrid vigor (heterosis), simultaneously achieving uniformity from the parental inbreds and enhanced productivity in the hybrid offspring.
Solution Approach 2:
The patent changes the genetic parameter from homozygous (inbred) to heterozygous (hybrid) to improve plant vigor and seed yield. By controlling the crossing of two inbred lines, the patent achieves the desired parameter change while maintaining reproducibility and uniformity in the hybrid production.
Data Source
AI summary
The present invention provides an inbred corn line designated CI5166, methods for producing a corn plant by crossing plants of the inbred line CI5166 with plants of another corn plant. The invention further encompasses all parts of inbred corn line CI5166, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line CI5166, and plants produced according to these methods.