Hybrid Corn CH011007 Breeding via Segmentation and Extraction
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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 introduction of new genetic modifications and traits.
Innovation Solution
The development of the hybrid corn variety CH011007, which incorporates a cytoplasmic or nuclear factor for male sterility and genetic modifications conferring traits like herbicide resistance, disease resistance, and altered metabolism, using techniques like genome editing and transgenic integration, along with tissue culture methods for regenerating plants with specific characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional self-pollination breeding methods are used, then genetic stability and uniformity are maintained, but the introduction of new genetic modifications and traits is limited
Solution Approach 1:
The breeding process is segmented into distinct phases: creating hybrid plants with desired traits through controlled cross-pollination, then separating the hybrid generation from subsequent self-pollination generations. This allows new genetic modifications to be introduced in the hybrid phase while maintaining genetic stability in the self-pollinated progeny phase.
Solution Approach 2:
The patent applies preliminary action by creating hybrid plants with new genetic modifications before the self-pollination phase. The hybrid plants are developed with desired traits through controlled cross-pollination, and only after this preliminary hybrid creation do the plants undergo self-pollination to produce stable, uniform progeny. This sequence allows genetic innovation to occur before stability is required.
2Adaptability or versatility
If cross-pollination is used to create hybrid plants, then desirable traits can be combined, but self-pollination must be prevented to maintain hybrid integrity
Solution Approach 1:
The patent extracts the male fertility function from the hybrid plants by removing or inactivating the tassels (male reproductive organs). This extraction prevents the hybrid plants from self-pollinating and maintains hybrid integrity by ensuring only controlled cross-pollination occurs. The female plants retain their silks for receiving pollen from designated male plants, thus maintaining the hybrid structure while preventing unwanted self-pollination.
Solution Approach 2:
The patent uses an intermediary system of controlled pollination where only specific male plants are allowed to pollinate specific female plants. This intermediary control mechanism ensures that only desired crosses occur, maintaining hybrid integrity. The controlled environment and selective pollination act as intermediaries between the male and female plants, preventing random or self-pollination while allowing the combination of desirable traits.
3Stability of the object's composition
If hybrid plants are produced through controlled cross-pollination, then uniformity and genetic stability are achieved, but the breeding process becomes more complex and time-consuming
Solution Approach 1:
The patent applies self-service by allowing the hybrid plants to naturally self-pollinate after the initial hybrid creation phase. Once the hybrid plants are established with the desired traits, they automatically produce uniform, stable progeny through self-pollination without requiring further external intervention. This self-service mechanism simplifies the breeding process by eliminating the need for continuous controlled cross-pollination while maintaining uniformity and genetic stability.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining the hybrid plants in a permanent state of controlled self-pollination. The hybrid plants continuously produce uniform, stable progeny through self-pollination, ensuring that the desired traits are maintained across generations without interruption. This continuous self-pollination process eliminates the need for repeated controlled cross-pollination, simplifying the breeding process while maintaining uniformity.
4Stability of the object's composition
If multiple generations of self-pollination are performed, then homozygous true-breeding plants are produced, but the time to crop maturity is extended
Solution Approach 1:
The patent applies preliminary action by creating hybrid plants with desired traits through controlled cross-pollination before the self-pollination phase. The hybrid plants are developed with the necessary genetic diversity and traits in advance, and only then do they undergo self-pollination to produce homozygous progeny. This preliminary hybrid creation reduces the number of self-pollination generations needed, thereby reducing the time to crop maturity while still achieving homozygosity and genetic stability.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011007. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011007, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011007 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 CH011007.