Hybrid Corn CH101293 Breeding via Segmented Parent Lines
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination, which limits the efficiency of trait introduction and hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH101293, which incorporates genetic modifications for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmic and nuclear factors, and genome editing techniques like CRISPR-Cas systems to introduce specific alleles and transgenes, ensuring cross-pollination and stable trait expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-pollination is allowed in corn breeding, then genetic stability is maintained, but trait introduction efficiency and hybrid seed production are limited
Solution Approach 1:
The invention divides the breeding population into distinct male and female parent groups with different genetic compositions. Male parents are selected for traits like disease resistance and yield, while female parents are selected for uniformity and adaptability. This segmentation allows efficient cross-pollination between groups to produce hybrids with combined desirable traits while maintaining genetic stability within each parent line through controlled self-pollination protocols.
2Adaptability or versatility
If cross-pollination is enforced to produce hybrid varieties, then trait combination and hybrid vigor are improved, but control over pollination and genetic purity becomes more difficult
Solution Approach 1:
The invention uses isolated field plots and physical barriers as intermediaries to control pollination. Male and female parent populations are planted in separate, isolated sections with controlled access. Pollen transfer is managed through timing protocols and physical isolation structures, ensuring that cross-pollination occurs only between intended parent lines while preventing unwanted pollination events. This intermediary approach simplifies the overall control system compared to manual emasculation or complex mechanical systems.
3Productivity
If multiple desirable traits are combined in a single hybrid variety, then agricultural performance is improved, but breeding program complexity and development time increase
Solution Approach 1:
The invention implements preliminary action by pre-selecting and stabilizing desirable traits in separate male and female parent lines before hybridization. Male parents are developed with specific traits like disease resistance and high yield potential, while female parents are pre-selected for uniformity, adaptability, and compatibility with male parent traits. This preliminary trait consolidation in parent lines reduces the time required for multi-trait hybrid development compared to attempting to combine all traits in a single line and then crossbreed.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH101293. The invention thus relates to the plants, seeds and tissue cultures of the variety CH101293, and to methods for producing a corn plant produced by crossing a corn plant of variety CH101293 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 CH101293.