Hybrid Corn CH361230 Uniformity via Segmented Breeding
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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 affects the stability and commercial potential of corn hybrids.
Innovation Solution
The development of the hybrid corn variety CH361230, 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 through backcrossing and genetic transformation, ensuring uniformity and desirable characteristics in progeny.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used in corn breeding, then genetic diversity and trait combination are improved, but genetic uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred parental lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce uniform hybrid progeny. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
The patent changes the pollination parameter from random cross-pollination to controlled cross-pollination between specific homozygous inbred lines. By controlling which inbreds are crossed, the breeder ensures both genetic diversity (through combination of different inbreds) and genetic uniformity (through standardized inbred parents and predictable F1 hybrid performance).
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity and true breeding are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
Self-pollination and selection are performed as preliminary actions to develop homozygous inbred parental lines with uniform genetics. These standardized inbreds are then used as parents in controlled crosses, ensuring that the diversity introduced in subsequent generations comes from deliberate combination of known, uniform genetic backgrounds rather than random variation.
3Reliability
If conventional breeding methods are used, then development of hybrid varieties is achieved, but time required for breeding and evaluation increases
Solution Approach 1:
Inbred parental lines are developed and standardized in advance through multiple generations of self-pollination and selection. This preliminary development of homozygous, uniform inbreds allows subsequent hybrid crosses to be evaluated more efficiently, as the parental genetic backgrounds are already known and stabilized, reducing the time needed for additional generations of testing and selection.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH361230. The invention thus relates to the plants, seeds and tissue cultures of the variety CH361230, and to methods for producing a corn plant produced by crossing a corn plant of variety CH361230 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 CH361230.