Hybrid Corn CH406580 Breeding via CRISPR Segmentation
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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 introduction of new genetic modifications and traits.
Innovation Solution
The development of the hybrid corn variety CH406580, which incorporates genetic modifications for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmic and nuclear factors, and genome editing techniques like CRISPR-Cas systems to introduce specific alleles and transgenes, ensuring stable expression of desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop hybrid corn varieties, then genetic stability and uniformity are maintained, but the ability to introduce new genetic modifications and traits is limited
Solution Approach 1:
The patent segments the breeding process into distinct phases: traditional cross-breeding to establish base hybrid varieties, followed by targeted genome editing (CRISPR-Cas systems) to introduce specific traits. This segmentation allows genetic stability to be maintained in the foundational genome while enabling precise introduction of new traits through controlled editing events.
Solution Approach 2:
The patent applies parameter changes by modifying specific genetic loci through genome editing techniques while maintaining the overall genetic architecture of the hybrid variety. By changing parameters at specific gene locations (such as introducing male sterility genes or disease resistance genes) rather than altering the entire genome, the patent achieves trait introduction with minimal disruption to genetic stability.
2Reliability
If self-pollination is prevented through male sterility mechanisms, then hybrid purity is maintained, but breeding complexity increases
Solution Approach 1:
The patent employs self-service mechanisms where the corn plants themselves enforce hybrid purity through intrinsic male sterility traits. The plants automatically prevent self-pollination and maintain hybrid integrity without requiring external intervention for emasculation or isolation, thereby reducing breeding operational complexity while ensuring reliable hybrid purity.
Solution Approach 2:
The patent uses cytoplasmic male sterility (CMS) systems as intermediaries to control pollination. The mitochondrial cytoplasm acts as a mediator that naturally prevents pollen development in female parent plants, ensuring hybrid purity through a biological intermediary rather than mechanical or manual intervention.
3Productivity
If multiple desirable traits are combined in a single hybrid variety, then agricultural productivity improves, but breeding time and resource requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-establishing stable hybrid varieties with core desirable traits through traditional breeding before applying genome editing. This preliminary phase creates a solid genetic foundation that can then be efficiently enhanced with additional traits through targeted editing, reducing overall breeding time compared to attempting to combine all traits simultaneously through conventional methods.
Solution Approach 2:
The patent merges traditional cross-breeding methods with modern genome editing technologies to combine multiple desirable traits. By integrating these two approaches, the patent achieves efficient trait combination—using cross-breeding for major agronomic traits and genome editing for precise genetic modifications—thereby reducing total breeding time and resource requirements.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH406580. The invention thus relates to the plants, seeds and tissue cultures of the variety CH406580, and to methods for producing a corn plant produced by crossing a corn plant of variety CH406580 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 CH406580.