Hybrid Corn Variety Breeding for Stable Trait Combination
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Solution Overview
Problem
Existing corn breeding methods struggle to develop hybrids with uniformity and stability, particularly in combining desirable traits such as yield, disease resistance, and drought tolerance, while maintaining efficient hybrid production.
Innovation Solution
The development of the hybrid corn variety CH010559, which incorporates cytoplasmic or nuclear factors for male sterility, genetic modifications for traits like herbicide resistance and disease resistance, and a method for controlled cross-pollination using emasculation and bagging techniques to produce uniform and stable hybrid seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If corn plants are self-pollinated to develop homozygous inbred plants, then genetic uniformity and stability are improved, but the ability to combine diverse desirable traits in a single variety is reduced
Solution Approach 1:
The breeding program segments the corn population into distinct homozygous inbred lines, each fixed for specific desirable traits. This segmentation allows stable genetic lines to be created while maintaining the ability to combine different trait sets through controlled crosses between these segmented lines, resolving the contradiction between stability and versatility.
Solution Approach 2:
The patent applies preliminary action by first developing homozygous inbred plants through multiple generations of self-pollination before creating the final hybrid variety. This preliminary inbreeding establishes genetic stability and uniformity in the parent lines, which then can be combined through cross-pollination to create hybrids with diverse desirable traits.
2Adaptability or versatility
If cross-pollination is used to create hybrid plants, then desirable traits from different parents can be combined, but self-pollination occurs naturally reducing control over the breeding process
Solution Approach 1:
The patent uses an intermediary approach by employing controlled cross-pollination techniques where the breeder acts as the mediator between different parent plants. Through manual pollination and controlled environments, the natural cross-pollination process is directed and controlled, allowing reliable combination of traits from specific parents while preventing uncontrolled self-pollination.
3Manufacturing precision
If multiple generations of selfing and selection are performed to develop inbred plants, then homozygosity and uniformity are improved, but the time required to develop new varieties is increased
Solution Approach 1:
The patent applies continuity of useful action by implementing recurrent selection programs where the breeding process continues iteratively across multiple generations. This continuous cycle of selfing, selection, and crossing maintains uniformity through repeated refinement while managing time through efficient, ongoing breeding operations rather than discrete multi-year cycles.
4Adaptability or versatility
If conventional breeding methods are used to develop hybrid varieties, then genetic diversity and trait combination are improved, but the consistency and uniformity of the final variety is reduced
Solution Approach 1:
The patent applies local quality by creating homozygous inbred lines that are genetically uniform at specific loci while maintaining overall genetic diversity through the selection of different inbred parents. This allows the final hybrid variety to exhibit consistent, uniform characteristics while incorporating diverse desirable traits from different parental lines, resolving the contradiction between diversity and uniformity.
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010559. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010559, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010559 with itself or with another corn plant, such as a plant of another variety. The disclosure further relates to genetic complements of plants of variety CH010559.