CH010376 Hybrid Corn Breeding for Uniform Traits and Yield
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop hybrids with uniformity and stability, combining desirable traits such as yield, disease resistance, and drought tolerance, while maintaining genetic purity and preventing self-pollination.
Innovation Solution
The development of the hybrid corn variety CH010376, which includes genetic modifications for traits like male sterility, herbicide resistance, and disease resistance, achieved through cytoplasmic and nuclear factors, and utilizes methods like backcrossing and genetic transformation to introduce specific alleles and transgenes, ensuring uniformity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional breeding techniques are used to develop corn hybrids, then genetic diversity can be maintained, but uniformity and stability of desirable traits such as yield, disease resistance, and drought tolerance are difficult to achieve
Solution Approach 1:
The breeding program segments the development process into distinct phases: creating homozygous inbred lines through multiple generations of self-pollination, then crossing these standardized lines to produce uniform F1 hybrids. This segmentation allows each phase to be optimized independently, ensuring both uniformity in the final product and high yield potential.
Solution Approach 2:
The patent applies preliminary action by extensively pre-selecting and stabilizing parental inbred lines through multiple generations of self-pollination and selection before crossing. This preliminary stabilization of genetic composition in the parental lines ensures that the resulting F1 hybrids exhibit consistent uniformity and stability of desirable traits while maintaining high yield potential.
2Reliability
If self-pollination is allowed in corn plants, then genetic purity of inbred lines can be maintained, but cross-pollination is necessary to produce hybrid vigor and superior performance
Solution Approach 1:
The breeding system segments the reproductive process into two distinct phases: Phase 1 uses self-pollination to maintain genetic purity and homozygosity in parental inbred lines, while Phase 2 uses controlled cross-pollination between different inbred lines to generate hybrid vigor in F1 progeny. This segmentation resolves the contradiction by applying the appropriate pollination method to each breeding objective.
Solution Approach 2:
The patent uses spatial isolation and temporal scheduling as intermediary mechanisms to control pollination. Physical barriers and distance separation prevent unwanted cross-pollination during the inbreeding phase, while controlled removal of these barriers enables desired cross-pollination during the hybridization phase, thus maintaining genetic purity when needed and enabling hybrid vigor when required.
3Adaptability or versatility
If multiple desirable traits are combined in a single hybrid, then overall performance and adaptability improve, but the complexity of breeding programs and selection processes increases
Solution Approach 1:
The breeding program segments trait incorporation into separate parental lines, each optimized for specific traits (e.g., one parent for disease resistance, another for drought tolerance). By dividing the complex multi-trait objective into manageable parental components, the program reduces selection complexity while achieving comprehensive adaptability in the final hybrid through complementary gene action.
4Reliability
If extensive selection and evaluation of inbred plants is performed, then superior hybrids can be developed, but the time required to bring new varieties to market increases
Solution Approach 1:
The patent applies preliminary action by conducting extensive selection and stabilization of parental inbred lines in advance, across multiple generations, before the hybridization phase. This upfront investment of time in creating genetically stable, superior parental lines reduces the need for extensive subsequent evaluation, as the F1 hybrids inherit predictable, optimized traits from well-characterized parents, thus improving quality while managing overall development time.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010376. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010376, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010376 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 CH010376.