Hybrid Corn CH101273 Cytoplasmic Male Sterility Breeding
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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 CH101273, 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 techniques, allowing for controlled cross-pollination and stable hybrid seed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical emasculation is used to prevent self-pollination, then hybrid seed production is achieved, but labor intensity and production cost increase
Solution Approach 1:
The patent replaces the mechanical system of physical emasculation with a biological system - cytoplasmic male sterility (CMS). The CMS trait genetically prevents pollen production in the female parent, eliminating the need for manual or mechanical removal of male organs. This substitution dramatically reduces labor intensity while maintaining reliable prevention of self-pollination in hybrid seed production
Solution Approach 2:
The invention implements self-service by endowing the female parent with inherent male sterility through cytoplasmic factors. The plant's own cytoplasm prevents self-pollination without requiring external intervention for emasculation. The sterile trait is naturally maintained through inheritance, making the system self-regulating and eliminating continuous manual labor for preventing self-fertilization
2Adaptability or versatility
If multiple breeding techniques are combined to develop hybrid varieties, then desirable traits are combined, but breeding complexity and time required increase
Solution Approach 1:
The patent applies preliminary action by pre-establishing cytoplasmic male sterility in the female parent before the crossing operation. This preliminary genetic modification ensures that self-pollination is prevented from the outset, eliminating the need for complex post-crossing verification and reducing breeding program complexity. The CMS trait is incorporated into the parental lines in advance, streamlining the hybridization process
Solution Approach 2:
The invention achieves universality by creating a standardized CMS-based hybridization system that can be applied across multiple corn varieties and breeding programs. The cytoplasmic male sterility mechanism provides a universal solution for preventing self-pollination, allowing the same breeding approach to be used regardless of the specific variety being developed. This multi-functional system handles both trait combination and pollination control through a single integrated approach
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH101273. The invention thus relates to the plants, seeds and tissue cultures of the variety CH101273, and to methods for producing a corn plant produced by crossing a corn plant of variety CH101273 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 CH101273.