Hybrid Corn CH999541 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 CH999541, 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 cultures capable of regenerating plants with specific 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 predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing uniform inbred parental lines through self-pollination, then using controlled cross-pollination only at the final hybridization stage. This segmentation allows genetic diversity to be introduced only when needed, while maintaining uniformity in the parental stock.
Solution Approach 2:
Inbred parental lines are developed and stabilized through multiple generations of self-pollination before the hybridization step. This preliminary action ensures that the parental lines are genetically uniform and stable, which then enables predictable and uniform hybrid offspring when cross-pollination occurs.
2Stability of the object's composition
If multiple generations of self-pollination are used to develop inbred lines, then genetic uniformity is improved, but breeding time and complexity increase
Solution Approach 1:
Once uniform inbred parental lines are developed through self-pollination, they serve as reusable genetic templates. These standardized parental lines can be repeatedly crossed with different partners or used across multiple seasons, eliminating the need to re-develop uniform lines each time and significantly reducing overall breeding time.
3Adaptability or versatility
If traditional breeding methods are used to combine desirable traits, then trait diversity is improved, but hybrid uniformity and performance predictability deteriorate
Solution Approach 1:
The invention uses homogeneous inbred parental lines as the foundation for hybrid development. By ensuring that each parental line is genetically uniform and stable, the resulting hybrids exhibit consistent and predictable performance. The homogeneity of the parents translates directly to the uniformity of the offspring, even when combining multiple desirable traits.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH999541. The invention thus relates to the plants, seeds and tissue cultures of the variety CH999541, and to methods for producing a corn plant produced by crossing a corn plant of variety CH999541 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 CH999541.