Hybrid Corn CH432094 Breeding Uniformity
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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 and unpredictability in cross-pollination, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH432094, 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 specific characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plants, then genetic diversity and trait combination are improved, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The patent applies preliminary action by first developing homozygous inbred plants through repeated self-pollination and selection before creating hybrids. This preliminary inbreeding process establishes uniform, stable genetic lines that can be reliably crossed to produce uniform F1 hybrids, thus resolving the contradiction between trait combination and uniformity.
Solution Approach 2:
The patent segments the breeding process into distinct stages: developing homozygous inbred lines separately, then crossing them to produce F1 hybrids. This segmentation allows each stage to be optimized independently - the inbred lines achieve uniformity through self-pollination, while the crossing stage enables trait combination, resolving the uniformity-trait combination contradiction.
2Manufacturing precision
If self-pollination is used to develop homozygous inbred plants, then uniformity and stability are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
The patent uses preliminary self-pollination to create uniform inbred lines, which then serve as the basis for subsequent cross-pollination. This preliminary action establishes the uniformity needed for predictable hybrid performance while preserving genetic diversity through the later crossing of different inbred lines.
Solution Approach 2:
The patent inverts the conventional breeding approach by first creating uniform inbred lines through self-pollination, then using cross-pollination between these inbreds to generate diversity in the F1 generation. This inversion resolves the contradiction by establishing uniformity first, then introducing diversity through controlled crosses.
3Adaptability or versatility
If traditional breeding methods are used to develop new varieties, then genetic background combination is improved, but development time and productivity deteriorate
Solution Approach 1:
The patent applies preliminary inbreeding to create homozygous lines that are genetically stable and uniform. This preliminary action reduces the time needed for subsequent hybrid development and field testing, as the inbred lines already exhibit consistent phenotypes, thus accelerating the overall breeding process while maintaining genetic background combination.
Solution Approach 2:
The patent employs feedback through evaluation of F1 hybrid performance to select superior crosses for further development. This feedback mechanism allows breeders to quickly identify promising combinations and focus resources on the most promising lines, reducing the overall breeding time while maintaining effective genetic background combination.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH432094. The invention thus relates to the plants, seeds and tissue cultures of the variety CH432094, and to methods for producing a corn plant produced by crossing a corn plant of variety CH432094 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 CH432094.