Hybrid Corn CH978587 Cytoplasmic Male Sterility Breeding
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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 hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH978587, which incorporates genetic modifications and cytoplasmic male sterility to prevent self-pollination, along with specific traits like herbicide resistance and disease resistance, achieved through genetic transformation and backcrossing techniques, allowing for controlled cross-pollination and stable hybrid seed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical emasculation is used to prevent self-pollination, then hybrid seed production is achieved, but labor intensity and production cost increase
Solution Approach 1:
The patent replaces the mechanical system of physical emasculation with a biological system - cytoplasmic male sterility (CMS). The CMS trait genetically prevents pollen formation in the female parent, eliminating the need for manual or mechanical removal of male organs. This biological substitution maintains reliable prevention of self-pollination while dramatically reducing labor intensity and production costs.
2Productivity
If cytoplasmic male sterility is introduced to prevent self-pollination, then labor intensity is reduced, but genetic stability may be compromised
Solution Approach 1:
The patent uses a restorer gene as an intermediary element that controls the expression of cytoplasmic male sterility. The restorer gene, when introduced into the hybrid, can restore male fertility if needed, providing a controlled mechanism to manage the CMS trait. This intermediary allows the system to maintain genetic stability by offering a way to revert or modify the sterility condition while still benefiting from CMS during hybrid seed production.
3Adaptability or versatility
If multiple desirable traits are combined in a single hybrid variety, then agronomic quality is improved, but breeding complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct modular components: developing inbred lines with specific traits, introducing CMS into designated lines, and systematically crossing predetermined combinations. This modular approach allows different desirable traits to be incorporated into different parental lines, which are then crossed to produce hybrids with combined advantages, while maintaining organized control over the breeding complexity.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH978587. The invention thus relates to the plants, seeds and tissue cultures of the variety CH978587, and to methods for producing a corn plant produced by crossing a corn plant of variety CH978587 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 CH978587.