Hybrid Corn CH461538 Breeding for 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, which requires the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH461538, which incorporates 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 to regenerate plants with consistent physiological and morphological 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 developing homozygous inbred plants through multiple generations of self-pollination before creating the hybrid cross. This preliminary inbreeding step ensures that the parent plants are genetically uniform and stable, so that when they are crossed, the resulting hybrid population achieves uniformity and predictable performance, resolving the contradiction between trait combination capability and performance reliability
2Reliability
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but breeding flexibility and trait combination worsen
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct phases: first developing homozygous inbred lines through self-pollination, then creating hybrids through controlled cross-pollination between these inbreds. This segmentation allows each phase to optimize for its specific goal - uniformity in the inbred stage, and then flexibility in the hybrid stage - resolving the contradiction between genetic uniformity and breeding flexibility
3Adaptability or versatility
If traditional breeding methods are used to develop new varieties, then genetic diversity is improved, but development time and complexity worsen
Solution Approach 1:
The patent applies preliminary action by pre-developing homozygous inbred plants through multiple generations of self-pollination before the actual hybrid cross. This preliminary work establishes genetically stable parents that can be crossed to produce uniform hybrids more quickly, reducing the overall breeding cycle time while maintaining genetic diversity through the strategic selection of inbred parents
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH461538. The invention thus relates to the plants, seeds and tissue cultures of the variety CH461538, and to methods for producing a corn plant produced by crossing a corn plant of variety CH461538 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 CH461538.