Hybrid Corn Breeding for Uniform and Stable Cross-Pollination
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop hybrids with uniformity and desirable traits such as increased yield, disease resistance, and improved agronomic qualities while maintaining genetic stability and efficiency in cross-pollination processes.
Innovation Solution
The development of the hybrid corn variety CH010474, which incorporates cytoplasmic or nuclear factors for male sterility, genetic modifications for traits like herbicide resistance, and a method for controlled cross-pollination using emasculation and bagging techniques, along with genetic editing tools like CRISPR-Cas systems for precise trait introduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-pollination methods are used in corn breeding, then genetic diversity can be achieved, but uniformity and genetic stability of the hybrid progeny deteriorate
Solution Approach 1:
The breeding program segments the population into distinct inbred lines through repeated self-pollination and selection, creating genetically uniform parental lines that when crossed produce uniform hybrid progeny with consistent desirable traits
Solution Approach 2:
The patent applies preliminary action by developing homozygous inbred parental lines through multiple generations of self-pollination and selection before performing the cross, ensuring that the parental lines have stable and uniform genetic compositions that will produce uniform hybrid offspring
2Stability of the object's composition
If repeated self-pollination is used to develop homozygous inbred lines, then genetic uniformity of parental lines is improved, but time required for breeding deteriorates
Solution Approach 1:
The patent employs self-service by utilizing the plant's natural self-pollination mechanism to achieve homozygosity in inbred lines, allowing the breeding process to proceed efficiently without requiring complex external intervention while maintaining genetic uniformity
3Productivity
If natural wind pollination is relied upon, then cross-pollination efficiency can be maintained, but control over pollination precision deteriorates
Solution Approach 1:
The patent introduces an intermediary controlled pollination step where selected inbred parental lines are deliberately crossed under controlled conditions, acting as a mediator between the desire for natural efficiency and the need for precise genetic control in hybrid development
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010474. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010474, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010474 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 CH010474.