Hybrid Corn CH011086 Cytoplasmic Male Sterility Seed Production
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination, which limits the efficiency of hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH011086, which incorporates genetic modifications and cytoplasmic male sterility to prevent self-pollination, along with specific traits like herbicide resistance and disease resistance, achieved through genetic transformation and backcrossing methods, allowing for controlled cross-pollination and stable hybrid seed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If physical emasculation methods are used to prevent self-pollination, then hybrid seed production can be achieved, but the process complexity and labor requirements increase significantly
Solution Approach 1:
The patent replaces mechanical emasculation with a biological system - cytoplasmic male sterility (CMS). The CMS trait genetically prevents pollen formation, eliminating the need for manual or mechanical removal of male parts. This biological substitution dramatically reduces labor and complexity while maintaining hybrid seed production efficiency
Solution Approach 2:
The CMS system enables the plant to automatically prevent self-pollination through its own genetic mechanism. The sterile cytoplasm naturally prevents pollen development, so the plant self-regulates to avoid self-fertilization without external intervention, reducing the need for complex breeding procedures
2Adaptability or versatility
If traditional breeding methods are used to develop hybrid varieties, then genetic diversity can be achieved, but the time required for breeding programs extends over multiple generations
Solution Approach 1:
The patent uses preliminary action by pre-establishing homozygous inbred lines with desired traits before hybridization. These inbred parents are developed and characterized in advance, allowing the F1 hybrid to immediately express the combined desirable traits without requiring additional generational selection, thus reducing overall breeding time
Solution Approach 2:
The patent changes the genetic parameter from heterogeneous breeding populations to homozygous inbred lines with fixed genetic compositions. This parameter change allows predictable trait expression in hybrids and accelerates the breeding process by eliminating the need for multiple generations of selection to stabilize traits
3Ease of manufacture
If self-pollination is allowed in corn breeding, then seed production is simplified, but genetic uniformity and hybrid vigor are compromised
Solution Approach 1:
The patent introduces an intermediary mechanism - the CMS cytoplasm - that acts as a biological barrier preventing self-pollination. This intermediary ensures that only cross-pollination between different inbred lines occurs, guaranteeing hybrid vigor and trait consistency while maintaining relatively simple seed production procedures
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011086. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011086, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011086 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH011086.