Hybrid Corn CH409138 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 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 CH409138, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and backcrossing techniques, along with tissue culture methods to regenerate plants with consistent physiological and morphological 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 genetic non-uniformity and performance unpredictability worsen
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through repeated self-pollination, then crossing these stable lines to produce uniform F1 hybrids. This segmentation allows each phase to optimize for its specific goal - purity in inbreeding, diversity in crossing.
Solution Approach 2:
Homozygous inbred plants are developed through preliminary self-pollination and selection before the actual crossing step. This preliminary action ensures that the parent lines are genetically stable and uniform, which then guarantees uniform F1 hybrid progeny when crossed.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but breeding complexity and time required worsen
Solution Approach 1:
The plant performs self-pollination automatically, eliminating the need for complex人工 emasculation and hand-pollination procedures. The plant's own pollen transfers to its own silks, creating homozygous progeny through a simple self-service process that reduces breeding complexity.
3Stability of the object's composition
If repeated self-pollination and selection are performed to develop stable inbreds, then homozygosity is improved, but time to maturity and productivity worsen
Solution Approach 1:
The most time-consuming self-pollination and selection steps are performed as preliminary actions to establish homozygous inbred lines once. After this initial investment, the F1 hybrids produced by crossing these inbreds are uniformly consistent across generations, eliminating the need for repeated time-consuming selection cycles.
4Ease of operation
If natural wind pollination is used, then ease of operation is improved, but control over pollination and trait combination worsens
Solution Approach 1:
The natural wind pollination process is extracted and replaced with controlled hand-pollination procedures. The breeder manually removes tassels from female plants and transfers pollen from selected male plants, extracting the uncontrollable wind element and replacing it with precise manual control over which plants pollinate which.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH409138. The invention thus relates to the plants, seeds and tissue cultures of the variety CH409138, and to methods for producing a corn plant produced by crossing a corn plant of variety CH409138 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 CH409138.