Hybrid Corn CH408813 Uniformity via Segmented Breeding
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Solution Overview
Problem
Current corn breeding methods 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 CH408813, which incorporates a cytoplasmic or nuclear factor for male sterility and introduces specific genetic loci for traits like herbicide resistance, insect resistance, and disease resistance, using backcrossing and genetic transformation techniques to ensure consistent expression of desired 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 uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The patent applies preliminary action by developing and selecting specific inbred lines (I180580 and CV548123) through multiple generations of self-pollination and selection before creating the hybrid. This preliminary development ensures that the parent lines are genetically stable and uniform, which then produces predictable and uniform F1 hybrids when crossed, resolving the contradiction between genetic diversity and uniformity.
2Manufacturing precision
If self-pollination is used to develop homozygous inbred plants, then uniformity and genetic stability are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct phases: first developing separate homozygous inbred lines (I180580 and CV548123) through self-pollination, then combining them through cross-pollination to create the hybrid. This segmentation allows each phase to optimize for its specific goal - uniformity in the inbreds, then diversity in the hybrid.
Solution Approach 2:
The patent merges the advantages of both self-pollination and cross-pollination by first using self-pollination to create uniform inbred lines, then using cross-pollination to combine their desirable traits into a hybrid that exhibits both uniformity (from the standardized inbred parents) and genetic diversity (from the combination of different inbred lines).
3Reliability
If traditional breeding methods are used to develop new varieties, then genetic improvement is achieved, but development time and complexity increase
Solution Approach 1:
The patent uses copying by utilizing the well-characterized inbred lines I180580 and CV548123 as templates or copies of desirable genetic material. These inbreds serve as ready-made genetic building blocks that can be quickly combined through a single cross to produce the hybrid CH408813, avoiding the need to develop entirely new inbred lines from scratch and thus reducing the overall breeding cycle time.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH408813. The invention thus relates to the plants, seeds and tissue cultures of the variety CH408813, and to methods for producing a corn plant produced by crossing a corn plant of variety CH408813 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 CH408813.