Hybrid Corn CH462271 Breeding Segmentation
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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 CH462271, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmic-male sterility and transgenes integrated at a single chromosomal location, along with tissue culture methods for regenerating plants with consistent physiological and morphological characteristics.
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 uniformity and predictability deteriorate
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 parents to produce hybrid offspring. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Inbred parent lines are developed and standardized through multiple generations of self-pollination and selection before the actual hybrid cross. This preliminary action ensures that the parental genomes are homozygous and stable, which guarantees uniformity in the resulting hybrid population.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but genetic diversity deteriorates
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 intentionally created at the parental stage so that when crosses are made, all offspring receive identical parental genomes, ensuring hybrid uniformity.
Solution Approach 2:
The patent combines self-pollination (for uniformity) and cross-pollination (for diversity) in a sequential breeding strategy. The benefits of both methods are merged: self-pollination creates uniform parents, while cross-pollination between different inbreds introduces the desired genetic diversity for hybrid vigor.
3Adaptability or versatility
If multiple breeding methods are used to combine desirable traits, then trait diversity is improved, but breeding complexity deteriorates
Solution Approach 1:
The breeding program is segmented into separate tasks: developing inbred lines with specific traits, evaluating their performance, and then making controlled crosses. This segmentation makes the complex process of combining multiple traits more manageable and systematic.
Solution Approach 2:
Performance evaluation of inbred lines and their crosses provides feedback that guides subsequent breeding decisions. This feedback mechanism allows breeders to systematically combine desirable traits by selecting parents based on proven performance rather than random experimentation.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH462271. The invention thus relates to the plants, seeds and tissue cultures of the variety CH462271, and to methods for producing a corn plant produced by crossing a corn plant of variety CH462271 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 CH462271.