Hybrid Corn CH524791 CMS Genetic Segmentation
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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 CH524791, which incorporates genetic modifications for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic and nuclear factors, and genetic transformation techniques to introduce specific alleles and transgenes, allowing for controlled cross-pollination and improved seed production processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional breeding techniques are used to develop hybrid corn varieties, then genetic diversity and desirable traits can be combined, but self-pollination occurs which reduces hybrid seed production efficiency
Solution Approach 1:
The patent removes the male reproductive capability from the female parent by introducing cytoplasmic male sterility (CMS) genes, effectively extracting the self-pollination function. This ensures that the female parent can only receive pollen from the male parent, guaranteeing hybrid seed production without self-pollination contamination
Solution Approach 2:
The patent uses CMS genes as an intermediary mechanism to control pollination. The CMS genes act as a biological mediator that naturally prevents self-pollination by making the female parent sterile, thereby ensuring cross-pollination occurs without requiring manual intervention or complex mechanical systems
2Productivity
If multiple desirable traits are combined in hybrid corn varieties through breeding, then yield and resistance improve, but genetic stability may be compromised
Solution Approach 1:
The patent segments the genetic material into distinct parental lines with specific traits. The female parent contributes cytoplasmic male sterility and disease resistance genes, while the male parent contributes fertility restoration genes and yield-related traits. This segmentation allows each parent to be optimized for specific functions while maintaining genetic stability within each line
Solution Approach 2:
The patent applies local quality by assigning specific genetic characteristics to specific parental lines. The female parent is specifically engineered with CMS genes and disease resistance, while the male parent is specifically engineered with fertility restoration. Each parent line maintains its specialized genetic composition, ensuring overall hybrid stability
3Productivity
If cytoplasmic male sterility is introduced to prevent self-pollination, then hybrid seed production efficiency improves, but the complexity of the breeding program increases
Solution Approach 1:
The patent employs self-service by using the CMS genes to automatically perform the function of preventing self-pollination. The genetic mechanism itself serves as the control system, eliminating the need for manual emasculation, physical isolation, or complex mechanical pollination control systems that would increase program complexity
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH524791. The invention thus relates to the plants, seeds and tissue cultures of the variety CH524791, and to methods for producing a corn plant produced by crossing a corn plant of variety CH524791 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 CH524791.