Hybrid Corn CH636476 Breeding Segmentation
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform hybrid varieties with desirable traits such as high yield, disease resistance, and uniform germination due to genetic non-uniformity in cross-pollinated plants, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH636476, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and genetic transformation techniques to introduce desired traits, and tissue culture methods for regenerating plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop corn hybrids, then genetic diversity and trait combination are improved, but genetic uniformity and predictability of performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parent lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce hybrid offspring. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred parent plants are developed and standardized through multiple generations of self-pollination and selection before the actual hybrid cross is performed. This preliminary action ensures that the parental lines have stable, uniform genetics, which then enables predictable hybrid performance when crossed.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity and stability are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
Self-pollination and selection are performed as a preliminary action to develop standardized homozygous inbred parent lines with uniform genetics. This preliminary uniformity is essential for the subsequent cross-pollination phase to produce predictable hybrids with consistent performance.
Solution Approach 2:
The method merges two opposite approaches: self-pollination is used to create uniform inbred parents, while cross-pollination is used to generate genetically diverse hybrid offspring. By combining these opposing techniques in sequence, the system achieves both parental uniformity and hybrid diversity.
3Adaptability or versatility
If multiple breeding methods are used to combine desirable traits, then trait diversity and yield potential are improved, but breeding complexity and time required deteriorate
Solution Approach 1:
The breeding program is segmented into specialized teams or programs focused on specific traits (e.g., disease resistance, yield, stress tolerance). Each segment develops expertise and standardized procedures for its specific trait, reducing overall program complexity while maintaining comprehensive trait diversity.
Solution Approach 2:
The patent describes a unified breeding methodology that can be applied across multiple corn hybrid varieties and different trait objectives. This universal approach standardizes the breeding process itself, making it more manageable despite the diversity of traits being pursued across different programs.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH636476. The invention thus relates to the plants, seeds and tissue cultures of the variety CH636476, and to methods for producing a corn plant produced by crossing a corn plant of variety CH636476 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 CH636476.