Hybrid Corn CH819755 Breeding Segmentation
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Solution Overview
Problem
Current 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 like pedigree breeding and recurrent selection.
Innovation Solution
The development of the hybrid corn variety CH819755, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility (CMS) and restorer genes, along with tissue culture techniques for regenerating plants with specific physiological and morphological characteristics, and a method for crossing parent plants to produce hybrid seeds.
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 lines through self-pollination to ensure genetic uniformity, then crossing these stabilized lines to introduce genetic diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred parent lines are developed and stabilized through multiple generations of self-pollination before the actual hybrid cross. This preliminary stabilization of parental genetics ensures that the subsequent hybrid cross produces uniform, predictable offspring with desired traits.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but time required for breeding and development increases
Solution Approach 1:
Self-pollination is utilized to enable plants to reproduce without external intervention, automatically maintaining genetic uniformity across generations. This self-service mechanism accelerates the development of homozygous inbred lines compared to manual breeding methods.
3Adaptability or versatility
If traditional pedigree breeding methods are used, then desirable traits can be combined, but genetic non-uniformity in the resulting hybrids persists
Solution Approach 1:
The patent employs homozygous inbred parent lines that are genetically homogeneous, ensuring that all plants within each parental line are uniform. When these uniform parents are crossed, the resulting F1 hybrid population exhibits uniformity while combining desirable traits from both parents.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH819755. The invention thus relates to the plants, seeds and tissue cultures of the variety CH819755, and to methods for producing a corn plant produced by crossing a corn plant of variety CH819755 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 CH819755.