Hybrid Corn CH011052 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 CH011052, 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 mechanical emasculation with a biological system - cytoplasmic male sterility (CMS). The CMS trait genetically prevents pollen production in the female parent, eliminating the need for manual or mechanical removal of male organs. This biological substitution dramatically reduces labor intensity while maintaining reliable prevention of self-pollination in hybrid seed production
Solution Approach 2:
The patent implements self-service through the use of restorer genes in the male parent. The restorer gene automatically restores fertility in the F1 hybrid progeny without requiring external intervention. The genetic system self-regulates the fertility status across generations, reducing the need for continuous manual management and increasing breeding efficiency
2Adaptability or versatility
If multiple desirable traits are combined in hybrid corn, then agronomic quality improves, but genetic stability becomes difficult to maintain
Solution Approach 1:
The patent segments the genetic material into distinct inbred parental lines, each contributing specific desirable traits. By dividing the complex genetic composition into manageable parental components with defined characteristics, the patent enables systematic combination of multiple traits while maintaining genetic stability through controlled crosses between homozygous inbreds
Solution Approach 2:
The patent utilizes parameter changes in the form of cytoplasmic male sterility and nuclear restorer gene interactions. This genetic parameter system allows controlled manipulation of fertility status to ensure cross-pollination while maintaining stability of other agronomic traits. The CMS-Restorer system provides a stable genetic mechanism to achieve uniform hybrid progeny with consistent expression of multiple desirable traits
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011052. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011052, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011052 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 CH011052.