Hybrid Corn CH830291 Uniformity via Segmentation
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform hybrid plants with desirable traits such as high yield, disease resistance, and uniformity, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the hybrid corn variety CH830291, which incorporates a cytoplasmic or nuclear factor for male sterility and introduces desired traits like herbicide resistance, insect resistance, and disease resistance through genetic loci, ensuring uniformity and stability by using backcrossing and genetic transformation techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding techniques are used to develop hybrid corn, then genetic diversity is achieved, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parent lines through repeated selfing, then crossing these standardized parents to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the parent lines while ensuring uniformity in the hybrid progeny.
Solution Approach 2:
The patent applies parameter changes by transitioning from heterogeneous breeding populations to homozygous inbred lines (changing genetic homogeneity from low to high), then producing F1 hybrids that exhibit uniform heterozygosity. This parameter transformation resolves the contradiction between diversity and uniformity.
2Adaptability or versatility
If multiple desirable traits are combined in hybrid corn breeding, then trait comprehensiveness improves, but breeding complexity increases
Solution Approach 1:
Multiple desirable traits are merged into the inbred parent lines through selective breeding and selection before hybridization. The F1 hybrid inherits and combines these traits from both parents, achieving trait comprehensiveness while managing complexity through the structured breeding approach.
Solution Approach 2:
Desirable traits are selected and consolidated in the inbred parent lines through preliminary breeding actions before the hybrid cross is made. This preliminary selection and standardization of parents simplifies the overall breeding program while ensuring the hybrid inherits multiple desirable traits.
3Manufacturing precision
If self-pollination is used to develop inbred lines, then genetic uniformity of parent lines improves, but breeding time increases
Solution Approach 1:
The development of inbred lines through continuous self-pollination over multiple generations maintains genetic uniformity while progressing toward homozygosity. This continuous useful action achieves the necessary genetic uniformity efficiently, allowing the breeding program to move forward without unnecessary delays.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH830291. The invention thus relates to the plants, seeds and tissue cultures of the variety CH830291, and to methods for producing a corn plant produced by crossing a corn plant of variety CH830291 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 CH830291.