Hybrid Corn CH752576 Breeding for Genetic Stability
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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 CH752576, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, utilizing cytoplasmically-inherited traits and transgenes integrated at specific chromosomal locations, along with tissue cultures capable of regenerating 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 and selection before creating hybrids. This pre-establishes genetic uniformity and stability in the parent lines, ensuring that when these inbreds are crossed, the resulting hybrid performance is predictable and uniform, thus resolving the contradiction between trait combination capability and performance predictability.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but the time to develop stable varieties worsens
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct phases: developing homozygous inbred lines through self-pollination, selecting superior inbreds with desired traits, and then crossing these inbreds to create uniform hybrid varieties. This segmented approach allows parallel progression of multiple inbred lines simultaneously, reducing the overall time required to develop stable, uniform hybrid varieties while maintaining genetic uniformity.
3Adaptability or versatility
If traditional breeding methods are used to develop hybrid varieties, then genetic diversity is improved, but trait consistency and uniformity worsen
Solution Approach 1:
The patent applies local quality by focusing on specific gene loci and traits of interest rather than treating the entire genome uniformly. By selecting and crossing inbred plants that are homozygous at specific loci with desired traits, the method ensures consistency and uniformity in those specific traits while maintaining the genetic diversity needed for adaptability. This targeted approach resolves the contradiction between genetic diversity and trait consistency.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH752576. The invention thus relates to the plants, seeds and tissue cultures of the variety CH752576, and to methods for producing a corn plant produced by crossing a corn plant of variety CH752576 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 CH752576.