Hybrid Corn CH010408 Breeding via Male Sterility
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Solution Overview
Problem
The challenge in corn breeding is to develop hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination.
Innovation Solution
The development of the hybrid corn variety CH010408, which includes a cytoplasmic or nuclear factor for male sterility or self-incompatibility, along with genetic modifications that confer traits like herbicide resistance, insect resistance, and disease resistance, is achieved through advanced breeding techniques and genetic transformation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If self-pollination is allowed in corn breeding, then genetic diversity is maintained, but uniformity of hybrid progeny deteriorates
Solution Approach 1:
The patent extracts and removes the capability for self-pollination by introducing male sterility factors (cytoplasmic or nuclear) that prevent the plant from producing functional pollen or allow for easy removal of tassels. This extraction of the self-pollination function ensures that only cross-pollination occurs, maintaining uniformity of hybrid progeny while still allowing genetic diversity through controlled crossing with different parent lines
2Manufacturing precision
If cross-pollination is enforced to produce uniform hybrids, then uniformity of progeny is improved, but genetic stability deteriorates
Solution Approach 1:
The patent applies preliminary action by developing and maintaining stable inbred parental lines through multiple generations of self-pollination and selection before the hybrid cross. These inbred parents have stabilized genomes with homozygous gene loci, ensuring that when cross-pollination occurs, the resulting F1 hybrids receive genetically stable contributions from both parents, thus maintaining genetic stability while achieving uniformity
Solution Approach 2:
The patent uses copying by creating identical copies of the stable inbred parental lines and using them as parents for hybrid production. The inbred parents serve as standardized genetic templates that are replicated across multiple hybrid production cycles, ensuring both uniformity of the hybrid progeny and stability of the genetic material being transmitted
3Manufacturing precision
If inbred plants are developed through self-pollination, then uniformity of parent plants is improved, but productivity deteriorates
Solution Approach 1:
The patent applies dynamics by creating a dynamic breeding system where inbred parent lines with uniform characteristics are developed through self-pollination, but these same inbred lines are then used in cross-pollination to produce F1 hybrid progeny that exhibit heterosis (hybrid vigor) and superior productivity. The system dynamically switches between self-pollination for parent development and cross-pollination for high-yield hybrid production, resolving the contradiction between uniformity and productivity
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010408. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010408, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010408 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 CH010408.