Hybrid Corn CH157635 Breeding via Segmentation and Preliminary Action
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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 CH157635, which includes cytoplasmic or nuclear factors for male sterility and desired traits like herbicide resistance and disease resistance, introduced through genetic loci or transgenes, and the use of tissue cultures to regenerate plants with specific characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop hybrid corn varieties, then genetic diversity and desirable traits can be combined, but genetic non-uniformity and unpredictability occur in the resulting hybrids
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred parent lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce uniform hybrid progeny. This segmentation allows genetic diversity to be introduced only at the controlled crossing stage while maintaining uniformity within each phase.
Solution Approach 2:
Inbred parent lines are developed and standardized through multiple generations of self-pollination and selection before the actual hybrid crossing. This preliminary action ensures that the parental genomes are homozygous and uniform, which guarantees that the resulting hybrid progeny will be genetically uniform and predictable.
2Stability of the object's composition
If self-pollination is used to develop inbred plants, then genetic uniformity and stability are achieved, but genetic diversity and adaptability are reduced
Solution Approach 1:
Self-pollination and selection are performed as a preliminary action to develop homozygous inbred parent lines with uniform genetics. This uniformity is deliberately created at the parental stage so that when crossing occurs, the hybrid progeny inherit consistent, predictable traits from both parents, ensuring uniform performance in the field.
Solution Approach 2:
The breeding program segments the population into distinct inbred parental lines that are genetically uniform within themselves. By maintaining these uniform inbreds as separate entities and only combining them through controlled crossing, the system preserves genetic uniformity at the parental level while achieving diversity at the hybrid level.
3Adaptability or versatility
If traditional breeding methods are used to develop hybrid varieties, then multiple desirable traits can be combined, but the process requires extensive development of inbred plants and multiple evaluation cycles
Solution Approach 1:
Inbred parent lines are developed and characterized in advance for specific desirable traits. Once these inbreds are established and their trait profiles are known, hybrid combinations can be predicted and selected more efficiently, reducing the need for extensive field evaluation cycles and accelerating the breeding process.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH157635. The invention thus relates to the plants, seeds and tissue cultures of the variety CH157635, and to methods for producing a corn plant produced by crossing a corn plant of variety CH157635 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 CH157635.