Hybrid Corn CH820248 CMS 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 trait introduction and hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH820248, which incorporates genetic modifications and cytoplasmic male sterility to prevent self-pollination, along with tissue culture methods for regenerating plants with specific traits, enables the introduction of traits like herbicide resistance, disease resistance, and improved agronomic characteristics, and allows for controlled cross-pollination to produce hybrid seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional self-pollination breeding methods are used, then genetic stability is maintained, but trait introduction efficiency and hybrid seed production are limited
Solution Approach 1:
The patent extracts the self-pollination capability from the corn plant by introducing cytoplasmic male sterility, effectively removing the ability to self-pollinate while maintaining genetic stability through controlled cross-pollination. This allows for efficient trait introduction via hybridization without the risk of unwanted self-pollination events that would compromise genetic uniformity.
Solution Approach 2:
The patent uses cytoplasmic male sterility as an intermediary mechanism to control pollination. This intermediary system prevents self-pollination while enabling controlled cross-pollination between specific parental lines, thereby facilitating efficient trait introduction while maintaining genetic stability through controlled breeding.
2Productivity
If self-pollination is allowed, then genetic uniformity is maintained, but hybrid seed production efficiency decreases
Solution Approach 1:
The patent employs self-service mechanisms where the cytoplasmic male sterility trait automatically prevents self-pollination without requiring manual intervention. The plant itself serves to control its own pollination behavior, eliminating the need for labor-intensive emasculation or bagging operations while maintaining genetic uniformity and enabling efficient hybrid seed production.
3Productivity
If cytoplasmic male sterility is introduced to prevent self-pollination, then hybrid seed production efficiency improves, but genetic modification complexity increases
Solution Approach 1:
The patent utilizes naturally occurring cytoplasmic male sterility systems that have been identified and characterized through breeding research. Rather than creating entirely new genetic modifications, the patent copies and applies known CMS traits to corn breeding programs, thereby achieving efficient hybrid seed production without the need for complex de novo genetic engineering.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH820248. The invention thus relates to the plants, seeds and tissue cultures of the variety CH820248, and to methods for producing a corn plant produced by crossing a corn plant of variety CH820248 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 CH820248.