Hybrid Corn CH011157 Cytoplasmic Male Sterility Seed Production
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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 CH011157, 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
1Productivity
If traditional self-pollination breeding methods are used, then genetic uniformity can be achieved, but hybrid seed production efficiency is limited due to self-pollination
Solution Approach 1:
The patent extracts and removes the self-pollination capability from the corn plant by introducing cytoplasmic male sterility. This prevents the plant from producing functional pollen, thereby eliminating self-pollination and forcing cross-pollination for seed production, which dramatically improves hybrid seed production efficiency while maintaining genetic stability through controlled crossing.
Solution Approach 2:
The patent uses cytoplasmic male sterility as an intermediary mechanism to control pollination. The sterile cytoplasm acts as a mediator that prevents self-pollination but allows controlled cross-pollination through manual or mechanical means, thus improving hybrid seed production efficiency while maintaining genetic stability.
2Productivity
If multiple desirable traits are combined in hybrid varieties, then yield and resistance improve, but maintaining genetic stability becomes more difficult
Solution Approach 1:
The patent segments the genetic material into distinct parental lines, each carrying specific desirable traits. By maintaining separate inbred lines with defined genetic compositions and using cytoplasmic male sterility to control crossing, the patent enables combination of multiple traits (yield, disease resistance, herbicide tolerance) in the hybrid while maintaining genetic stability through controlled reproduction.
Solution Approach 2:
The patent creates composite genetic structures by combining multiple inbred lines with different desirable traits into a single hybrid variety. The hybrid inherits complementary traits from both parents (e.g., yield from one parent, disease resistance from the other), achieving superior overall performance while maintaining genetic stability through the cytoplasmic male sterility system that prevents unwanted segregation.
3Adaptability or versatility
If cross-pollination is used to develop hybrids, then genetic diversity and trait combination improve, but control over pollination becomes more difficult
Solution Approach 1:
The patent extracts the ability to produce functional pollen in the female parent through cytoplasmic male sterility. This ensures that cross-pollination occurs only when pollen is deliberately introduced from the male parent, providing complete control over pollination while maintaining genetic diversity and enabling precise trait combination in the hybrid offspring.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011157. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011157, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011157 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 CH011157.