Hybrid Corn CH011141 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 CH011141, 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
1Productivity
If self-pollination is allowed in corn breeding, then genetic stability and true-breeding progeny are maintained, but hybrid seed production efficiency is limited
Solution Approach 1:
The patent extracts the male sterility function from the plant's natural reproductive system by introducing cytoplasmic male sterility (CMS) through genetic transformation. This removes the plant's ability to self-pollinate, enabling controlled cross-pollination for hybrid seed production while maintaining genetic stability through careful selection of maintainer lines.
Solution Approach 2:
The patent uses an intermediary system involving maintainer lines and restorer lines to mediate between self-pollination and cross-pollination. The maintainer line preserves the CMS cytoplasm while allowing controlled pollination, and the restorer line restores male fertility in hybrid progeny, enabling efficient hybrid seed production without compromising genetic stability.
2Adaptability or versatility
If multiple desirable traits are combined in a single hybrid variety, then agricultural performance is improved, but breeding complexity and time requirements increase
Solution Approach 1:
The patent merges multiple desirable traits including high yield, disease resistance, herbicide tolerance, and uniformity into a single hybrid variety through coordinated breeding programs. By combining traits from different parent lines and using molecular markers to track inheritance, the patent achieves multi-trait integration while managing breeding complexity through systematic approaches.
Solution Approach 2:
The patent applies preliminary action by developing and characterizing parent inbred lines with specific desirable traits before creating the hybrid. Molecular markers are used to pre-identify and select parent lines carrying desired traits, allowing the breeding program to focus on combining these pre-selected lines rather than screening numerous offspring for each trait individually.
3Object-affected harmful factors
If genetic modifications are introduced to confer resistance traits, then disease and herbicide resistance are improved, but genetic stability and regulatory compliance become more challenging
Solution Approach 1:
The patent replaces traditional mechanical breeding methods with genetic transformation techniques to introduce resistance traits. Molecular markers and genetic engineering tools are used to precisely insert resistance genes (e.g., for herbicides like glyphosate or diseases such as corn leaf blight) into the plant genome, achieving stable inheritance while maintaining control over genetic modifications for regulatory compliance.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011141. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011141, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011141 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 CH011141.