Hybrid Corn CH091735 Breeding via Segmentation and Preliminary Action
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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 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 CH091735, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmic-male sterility and transgenes integrated at a single chromosomal location, along with 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 in corn breeding, then genetic diversity is improved, but genetic uniformity and predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing uniform inbred parental lines through self-pollination, then crossing them to produce hybrid offspring. This segmentation allows genetic diversity to be introduced only at the hybridization stage, while maintaining uniformity within each parental line and within the hybrid population.
Solution Approach 2:
Inbred parental lines are developed and stabilized through multiple generations of self-pollination and selection before the actual hybrid crossing. This preliminary action ensures that the parental lines are genetically uniform and stable, which then enables predictable and uniform 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 genetic diversity deteriorates
Solution Approach 1:
Self-pollination and selection are used as preliminary actions to develop uniform inbred parental lines. This creates genetically stable and uniform parent stocks that can then be crossed to introduce diversity in the hybrid generation, resolving the contradiction between uniformity and diversity.
Solution Approach 2:
Inbred parental lines serve as intermediaries that bridge the need for genetic uniformity (achieved through self-pollination) and genetic diversity (needed for hybrid vigor). The inbreds are uniform themselves but when crossed together produce diverse yet uniform hybrids, mediating between these two opposing requirements.
3Adaptability or versatility
If traditional breeding methods are used, then broad genetic base is improved, but breeding time and complexity increase
Solution Approach 1:
Inbred lines are developed and maintained as pre-tested, genetically stable resources with broad genetic bases. Once developed, these inbreds can be repeatedly crossed with different partners to produce multiple hybrid varieties, amortizing the initial breeding time across many subsequent hybrid developments.
Solution Approach 2:
The breeding approach changes from developing each hybrid independently to developing reusable inbred parental lines. This parameter change in the breeding strategy allows a single inbred line to contribute to multiple hybrid varieties, significantly reducing total breeding time while maintaining broad genetic representation.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH091735. The invention thus relates to the plants, seeds and tissue cultures of the variety CH091735, and to methods for producing a corn plant produced by crossing a corn plant of variety CH091735 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 CH091735.