Hybrid Corn CH175773 Breeding for Genetic Uniformity
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform hybrid varieties with desirable traits such as high yield, disease resistance, and uniform germination due to genetic non-uniformity and unpredictability in cross-pollination, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH175773, which incorporates genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and transgenic approaches to ensure consistent performance and hybrid vigor, along with tissue culture methods for regenerating plants with specific characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plants, then genetic diversity and trait combination are improved, but genetic non-uniformity and performance unpredictability worsen
Solution Approach 1:
The patent applies preliminary action by first developing homozygous inbred plants through multiple generations of self-pollination and selection before creating hybrids. This pre-processing ensures genetic uniformity and stability in the parent lines, which then produces reliable and uniform hybrid offspring when crossed, resolving the contradiction between trait combination capability and performance predictability.
Solution Approach 2:
The patent segments the breeding process into distinct phases: developing homozygous inbred lines through self-pollination, selecting desired traits, and then crossing these stabilized lines to create hybrids. This segmentation allows each phase to be optimized independently, ensuring genetic uniformity is established before hybridization, thus improving performance reliability while maintaining trait combination versatility.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but breeding complexity and time required worsen
Solution Approach 1:
The patent applies self-service by utilizing the plant's own self-pollination capability to achieve homozygosity through repeated selfing over multiple generations. This natural self-service mechanism eliminates the need for complex人工 emasculation and controlled pollination procedures, simplifying the breeding process while achieving the desired genetic uniformity in inbred lines.
Solution Approach 2:
The patent employs continuous self-pollination across multiple generations to progressively increase homozygosity. This continuous application of self-pollination ensures gradual and stable genetic uniformity is achieved, making the process manageable and less complex compared to attempting to create uniformity through more complicated means.
3Adaptability or versatility
If traditional breeding methods are used to develop new varieties, then genetic diversity is maintained, but trait consistency and uniformity worsen
Solution Approach 1:
The patent applies preliminary action by first creating and stabilizing homozygous inbred lines with specific desired traits before crossing them to produce hybrids. This pre-establishment of uniform, trait-consistent parent lines ensures that the resulting hybrids exhibit high trait uniformity and consistency, while still benefiting from the genetic diversity introduced through the crossing of different inbred lines.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH175773. The invention thus relates to the plants, seeds and tissue cultures of the variety CH175773, and to methods for producing a corn plant produced by crossing a corn plant of variety CH175773 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 CH175773.