Hybrid Corn CH837643 Breeding for Genetic 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 CH837643, 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 performance predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to introduce controlled genetic diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Inbred parental lines are developed and standardized through multiple generations of self-pollination and selection before the actual hybrid crossing. This preliminary action ensures that the genetic composition of parents is stable and uniform, 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 is improved, but time to develop stable varieties increases
Solution Approach 1:
The breeding system uses self-pollination to automatically maintain genetic uniformity in inbred lines without requiring intensive manual intervention for each generation. Once the self-pollination process is established, it serves itself to produce uniform progeny, reducing the time and labor needed compared to methods requiring constant human management.
3Adaptability or versatility
If multiple breeding methods are combined to develop hybrids with multiple desirable traits, then trait combination is improved, but breeding program complexity increases
Solution Approach 1:
Multiple breeding methods (self-pollination for inbreeding, cross-pollination for hybridization, selection for trait improvement) are merged into a unified breeding program. The patent integrates these methods systematically, using inbred lines as standardized building blocks that can be combined through crossing to achieve multiple desirable traits while managing complexity through structured procedures.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH837643. The invention thus relates to the plants, seeds and tissue cultures of the variety CH837643, and to methods for producing a corn plant produced by crossing a corn plant of variety CH837643 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 CH837643.