Hybrid Corn CH283398 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 hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH283398, which incorporates cytoplasmic or nuclear factors for male sterility and includes genetic loci conferring traits like herbicide resistance, disease resistance, and altered metabolism, along with tissue culture methods for regenerating plants with specific physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If self-pollination is allowed in corn breeding, then genetic uniformity is maintained, but hybrid vigor and genetic diversity are lost
Solution Approach 1:
The patent applies preliminary action by pre-establishing male sterility systems (cytoplasmic or nuclear) in the female parent before crossing occurs. This prevents self-pollination in advance, ensuring that only cross-pollination with the male parent can occur, thereby guaranteeing hybrid vigor while maintaining controlled genetic uniformity in the F1 generation
Solution Approach 2:
The patent uses male sterility factors (cytoplasmic or nuclear) as intermediaries to control pollination. These factors act as mediators that prevent self-pollination without requiring physical emasculation, enabling reliable hybrid seed production while maintaining the ability to produce uniform F1 hybrids
2Productivity
If manual emasculation is used to prevent self-pollination, then hybrid seed production is achieved, but labor costs and production time increase
Solution Approach 1:
The patent applies self-service by utilizing self-sterilization mechanisms inherent in the plant biology. The male sterile lines automatically prevent pollen production without human intervention, eliminating the need for manual emasculation and significantly reducing labor costs and production time while maintaining high hybrid seed production efficiency
Solution Approach 2:
The patent employs male sterility factors as intermediaries that automatically control the pollination process. These biological mediators replace manual emasculation operations, enabling large-scale hybrid seed production without the time-consuming manual labor previously required
3Adaptability or versatility
If multiple breeding populations are maintained for trait selection, then genetic diversity is improved, but breeding program complexity increases
Solution Approach 1:
The patent merges multiple breeding objectives into a unified hybrid variety that combines desirable traits from diverse genetic sources. By consolidating trait selection into the final hybrid CH283398, the program reduces complexity while maintaining genetic diversity through the heterozygous combination of alleles from both parents
Solution Approach 2:
The patent applies preliminary action by pre-selecting and consolidating desirable traits into the parental lines before hybridization. This preliminary trait consolidation simplifies the breeding program structure while maintaining genetic diversity, as the complexity of trait selection is resolved in the parental development phase rather than requiring complex multi-population management
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH283398. The invention thus relates to the plants, seeds and tissue cultures of the variety CH283398, and to methods for producing a corn plant produced by crossing a corn plant of variety CH283398 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 CH283398.