Hybrid Corn CH908544 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 breeding processes.
Innovation Solution
The development of the hybrid corn variety CH908544, which incorporates genetic modifications and cytoplasmic male sterility traits to prevent self-pollination, along with specific genetic loci conferring herbicide resistance, insect resistance, and other desirable characteristics, using advanced breeding methods and genetic transformation techniques like genome editing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional self-pollination breeding methods are used, then genetic uniformity can be achieved, but breeding efficiency is limited and self-pollination cannot be prevented
Solution Approach 1:
The patent extracts and removes the male reproductive capability from the female parent line through cytoplasmic male sterility, preventing self-pollination at the physiological level. This allows the female parent to reliably receive pollen only from the intended male parent, dramatically improving breeding efficiency while maintaining genetic uniformity through controlled cross-pollination.
2Stability of the object's composition
If homozygous inbred plants are developed through multiple generations of selfing, then genetic stability is achieved, but time to develop breeding parents increases
Solution Approach 1:
The patent performs preliminary development of homozygous inbred lines through multiple generations of selfing before the actual hybridization event. This preliminary action ensures genetic stability is established in advance, allowing the subsequent cross-pollination to produce uniform F1 hybrids quickly without requiring additional generations of inbreeding.
Solution Approach 2:
The patent employs self-pollination of inbred parent lines to maintain and propagate their genetically stable characteristics. By allowing the inbred parents to self-service their own genetic uniformity through controlled selfing, the system ensures that when cross-pollination occurs, both parents contribute stable, homogeneous genetic material to the hybrid offspring.
3Reliability
If cytoplasmic male sterility is introduced to prevent self-pollination, then controlled cross-pollination is achieved, but genetic modification complexity increases
Solution Approach 1:
The patent introduces cytoplasmic male sterility as an intermediary mechanism that mediates between the desire for genetic uniformity and the need for controlled cross-pollination. The CMS trait acts as a biological mediator that automatically prevents self-pollination while allowing controlled cross-pollination from selected male parents, simplifying the overall breeding system despite the initial genetic modification required.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH908544. The invention thus relates to the plants, seeds and tissue cultures of the variety CH908544, and to methods for producing a corn plant produced by crossing a corn plant of variety CH908544 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 CH908544.