Hybrid Corn Pollination Control for Uniform Trait Stability
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Solution Overview
Problem
Existing corn breeding methods struggle to develop hybrids with uniformity and desirable traits such as yield, disease resistance, and drought tolerance, while maintaining stability and commercial viability.
Innovation Solution
The development of the hybrid corn variety CH010460, which incorporates cytoplasmic and nuclear factors for male sterility, genetic modifications for traits like herbicide resistance and disease resistance, and a method of controlled cross-pollination to ensure uniformity and desirable characteristics, along with the use of genome editing techniques for precise genetic locus modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop corn hybrids, then genetic diversity is maintained, but uniformity and stability of desirable traits are difficult to achieve
Solution Approach 1:
The patent applies preliminary action by developing homozygous inbred parent lines through multiple generations of self-pollination before crossing. This pre-preparation ensures that the parental lines have stable and uniform genetics, which directly leads to uniform F1 hybrid progeny with consistent desirable traits, resolving the contradiction between trait uniformity and breeding complexity
Solution Approach 2:
The patent utilizes cytoplasmic male sterility (CMS) as a genetic parameter change to prevent self-pollination in the female parent. By changing the fertility parameter of the parent plants, the system ensures controlled cross-pollination and maintains hybrid uniformity without requiring manual emasculation, thereby improving reliability while managing breeding process complexity
2Stability of the object's composition
If self-pollination is used to develop homozygous lines, then genetic uniformity is achieved, but time to reach stable lines increases
Solution Approach 1:
The patent employs self-service through cytoplasmic male sterility where the female parent automatically prevents self-pollination without human intervention. The CMS trait ensures that only cross-pollination occurs, allowing the breeding process to self-regulate and achieve genetic homogeneity more efficiently, reducing the time loss associated with manual breeding operations
Solution Approach 2:
The patent uses phenotypic selection and genotypic evaluation as feedback mechanisms to monitor progress toward genetic homogeneity. By continuously evaluating the breeding populations and selecting individuals that meet uniformity standards, the system accelerates the achievement of stable inbred lines, offsetting the time required for multiple generations of self-pollination
3Productivity
If cross-pollination is used to produce hybrids, then heterosis and yield improvement are achieved, but control over pollination and trait consistency becomes difficult
Solution Approach 1:
The patent applies local quality by creating spatial separation between male and female parent planting locations. The female parent rows are planted in specific patterns with male parent rows, ensuring that only the intended cross-pollination occurs. This localized control mechanism maintains pollination precision while allowing natural cross-pollination to produce heterotic hybrids with improved yield
Solution Approach 2:
The patent changes the fertility parameter of the female parent through cytoplasmic male sterility, transforming it from fertile to sterile. This parameter change eliminates the possibility of self-pollination and ensures 100% cross-pollination control, achieving both high productivity through heterosis and precise manufacturing precision in pollination control simultaneously
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010460. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010460, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010460 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 CH010460.