Hybrid Corn CH892315 Uniformity via Segmented Breeding
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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 uniform germination, as they often result in non-uniform and unpredictable performance due to genetic differences between cross-pollinated plants.
Innovation Solution
The development of the hybrid corn variety CH892315, which incorporates cytoplasmic or nuclear factors for male sterility and desired traits like herbicide resistance, insect resistance, and disease resistance, using backcrossing and genetic transformation techniques to introduce specific genetic loci, and tissue culture methods to regenerate plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-pollination breeding methods are used, then genetic diversity is introduced, but uniformity and predictability of hybrid performance deteriorates
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through self-pollination, then crossing these standardized parents to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the parental lines while ensuring uniformity in the commercial hybrid crop.
Solution Approach 2:
The patent changes the genetic parameter state by using repeated self-pollination to achieve homozygosity (fixed allele frequencies) in parental lines, then uses cross-pollination to create heterozygous F1 hybrids with predictable uniform performance. This parameter transformation resolves the contradiction between diversity and uniformity.
2Manufacturing precision
If repeated self-pollination is used to develop homozygous inbred lines, then uniformity of parental lines is improved, but time required for breeding increases
Solution Approach 1:
Homozygous inbred parental lines are developed and standardized in advance before the actual hybrid production season. This preliminary action allows the time-consuming self-pollination process to be completed beforehand, so that commercial hybrid seed production can proceed efficiently without repeated generations.
Solution Approach 2:
Once homozygous inbred lines are established, they serve as reusable parental copies that can be planted repeatedly to produce uniform F1 hybrids. The standardized parental lines act as templates that can be copied across multiple breeding cycles and locations, reducing overall breeding time.
3Stability of the object's composition
If homozygous inbred parental lines are developed through multiple generations of selfing, then genetic stability is improved, but complexity of the breeding program increases
Solution Approach 1:
The complex process of developing homozygous lines is extracted and isolated as a separate preliminary phase, distinct from the routine hybrid seed production. Once the stable inbred lines are extracted and established, the remaining breeding program becomes simpler and more repetitive, focusing on crossing these standardized parents rather than continuing generation-by-generation selfing.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH892315. The invention thus relates to the plants, seeds and tissue cultures of the variety CH892315, and to methods for producing a corn plant produced by crossing a corn plant of variety CH892315 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 CH892315.