Hybrid Corn CH652087 Breeding via Segmentation and Male Sterility
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 in cross-pollinated plants, which makes performance unpredictable.
Innovation Solution
The development of the hybrid corn variety CH652087, which includes genetic loci conferring traits like male sterility, herbicide resistance, and disease resistance, and the use of cytoplasmically-inherited traits to control self-pollination, ensuring consistent performance and improved agronomic characteristics through controlled cross-pollination processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop corn hybrids, then genetic diversity and trait combination are improved, but genetic non-uniformity increases making performance unpredictable
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through self-pollination (for uniformity) and then crossing these inbreds (for diversity). This segmentation allows each phase to optimize for its specific goal while maintaining overall reliability.
Solution Approach 2:
Homozygous inbred parent lines are developed in advance through multiple generations of self-pollination and selection before the actual hybrid cross. This preliminary action ensures genetic uniformity in the parents, which then translates to uniform and predictable hybrid performance.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but ability to combine desirable traits from different plants is reduced
Solution Approach 1:
The breeding program separates the uniformity-generating step (self-pollination to create inbreds) from the diversity-generating step (crossing different inbreds). Each inbred line achieves genetic uniformity through selfing, then crossing combines traits from multiple uniform parents.
Solution Approach 2:
Homozygous inbred lines serve as intermediaries that carry specific desirable traits in a uniform genetic background. These inbred intermediaries are then crossed to combine multiple traits while maintaining predictability.
3Manufacturing precision
If male sterility is introduced to prevent self-pollination, then hybrid uniformity is improved, but breeding process complexity increases
Solution Approach 1:
The female parent plant self-services by naturally preventing self-pollination through male sterility (cytoplasmic or genetic). This eliminates the need for manual detasseling or other artificial emasculation procedures, simplifying the overall process while ensuring hybrid uniformity.
Solution Approach 2:
Cytoplasmic male sterility (CMS) or genetic male sterility acts as an intermediary mechanism that automatically prevents self-pollination. The sterility system mediates between the need for hybrid uniformity and the simplicity of the breeding process.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH652087. The invention thus relates to the plants, seeds and tissue cultures of the variety CH652087, and to methods for producing a corn plant produced by crossing a corn plant of variety CH652087 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 CH652087.