Hybrid Corn CH011107 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 CH011107, 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 self-pollination is allowed in corn breeding, then genetic diversity is maintained, but hybrid seed production efficiency decreases due to uncontrollable pollination
Solution Approach 1:
The patent removes the male reproductive capability from the female parent by inducing male sterility, thereby extracting the self-pollination possibility from the breeding system. This ensures that the female parent can only receive pollen from the male parent, achieving complete pollination control while maintaining high hybrid seed production efficiency
Solution Approach 2:
The patent introduces a male sterility factor as an intermediary mechanism that mediates between the need for genetic diversity and pollination control. This sterility factor acts as a biological mediator that prevents self-pollination while allowing controlled cross-pollination, resolving the contradiction between reliability and productivity
2Adaptability or versatility
If multiple desirable traits are combined in hybrid corn, then agronomic quality improves, but breeding complexity increases
Solution Approach 1:
The patent combines multiple desirable traits (high yield, disease resistance, stress tolerance) into a single hybrid variety by systematically crossing inbred lines that each contribute specific traits. The male sterility system facilitates this merging by enabling efficient hybridization without the complexity of manual emasculation, thus improving agronomic quality while managing breeding program complexity
Solution Approach 2:
The patent performs preliminary development of homozygous inbred lines with specific traits before combining them in hybrid crosses. This preliminary action allows traits to be selected and stabilized in parent lines, reducing the complexity of managing multiple traits simultaneously in the breeding program while ensuring high agronomic quality in the final hybrid
3Stability of the object's composition
If inbred lines are developed through extensive selfing, then genetic uniformity improves, but inbre depression increases
Solution Approach 1:
The patent creates a uniform population of hybrid plants that copy the optimal heterozygous genotype from the F1 cross. This copying approach allows the hybrid to inherit the genetic uniformity of inbred parents while avoiding inbreed depression through heterosis, achieving both genetic stability and plant vigor
Solution Approach 2:
The patent converts the harmful effect of inbreed depression into a benefit by using highly inbred parental lines to produce vigorous hybrid offspring. The extensive selfing that causes inbreed depression in parents actually ensures genetic uniformity and purity in the parental lines, which when crossed produce uniform, vigorous hybrids that express heterosis, thus turning the harm of inbreeding into the benefit of hybrid vigor
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011107. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011107, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011107 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 CH011107.