Hybrid Corn CH807727 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 CH807727, which incorporates genetic modifications and cytoplasmic male sterility to prevent self-pollination, along with tissue culture methods for regenerating plants with specific traits like herbicide resistance and improved agronomic characteristics, enables efficient hybrid seed production and genetic stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-pollination is allowed in corn breeding, then genetic diversity is maintained, but hybrid seed production efficiency decreases due to inability to control pollination
Solution Approach 1:
The patent removes the male reproductive capability from the female parent plant through cytoplasmic male sterility (CMS), extracting the ability to self-pollinate while preserving the female plant's ability to receive pollen. This ensures 100% cross-pollination in hybrid seed production without compromising genetic stability of the parental lines.
Solution Approach 2:
The patent introduces a male sterility system as an intermediary mechanism between the female parent and pollen donors. This intermediary (CMS trait) controls pollination by preventing self-pollination while allowing controlled cross-pollination with fertile male parents, thereby提高效率 hybrid seed production while maintaining genetic stability.
2Adaptability or versatility
If multiple desirable traits are combined in hybrid corn, then agronomic quality improves, but breeding complexity increases
Solution Approach 1:
The patent employs a universal male sterility system (CMS) that can be applied across different corn hybrids and breeding programs. This single mechanism serves multiple functions: preventing self-pollination, ensuring cross-pollination, and maintaining genetic purity, thereby simplifying breeding programs while enabling combination of multiple desirable traits in hybrids.
Solution Approach 2:
The patent performs preliminary development of homozygous inbred lines with specific desirable traits before creating the hybrid combination. By pre-establishing stable inbred lines with targeted characteristics (disease resistance, yield components, etc.), the breeding complexity is managed systematically while achieving superior agronomic quality in the final hybrid.
3Manufacturing precision
If inbred lines are developed through extensive selfing, then genetic uniformity increases, but time to maturity increases
Solution Approach 1:
The patent utilizes the natural self-pollinating capability of corn during the inbreeding process to develop homozygous lines. By allowing controlled selfing for 5-6 generations, the breeding program achieves genetic uniformity through the plant's own reproductive mechanism, reducing the need for complex人工 intervention and minimizing time loss while maintaining precision.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH807727. The invention thus relates to the plants, seeds and tissue cultures of the variety CH807727, and to methods for producing a corn plant produced by crossing a corn plant of variety CH807727 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 CH807727.