Hybrid Corn CH090746 Breeding for Uniformity
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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 uniformity, 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 CH090746, which incorporates cytoplasmic or nuclear factors for male sterility and desired traits like herbicide resistance, insect resistance, and disease resistance, using techniques such as backcrossing and genetic transformation to introduce specific genetic loci, ensuring consistent performance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-pollination breeding methods are used, 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 lines through self-pollination, maintaining these lines separately, and then performing controlled crosses. This segmentation ensures genetic diversity is captured in the inbred lines while the controlled cross-pollination phase ensures uniformity in the resulting hybrids.
Solution Approach 2:
Homozygous inbred parent lines are developed and stabilized before the hybrid cross is performed. This preliminary action of creating uniform parental lines ensures that when cross-pollination occurs, the resulting hybrids exhibit consistent and predictable performance characteristics.
2Manufacturing precision
If self-pollination is used to develop uniform inbred lines, then uniformity is improved, but genetic diversity deteriorates
Solution Approach 1:
The breeding program segments the population into multiple independent inbred lines, each developed through self-pollination to achieve uniformity. By maintaining multiple diverse inbred lines rather than one, the overall program preserves genetic diversity while each line achieves uniformity.
Solution Approach 2:
Multiple genetically diverse inbred lines are combined through controlled cross-pollination to create hybrids. This merging of diverse uniform lines achieves both uniformity (from the controlled cross) and genetic diversity (from the combination of different inbred lines).
3Adaptability or versatility
If multiple breeding populations are crossed to combine desirable traits, then trait diversity is improved, but predictability of hybrid performance deteriorates
Solution Approach 1:
Parental lines with desirable traits are developed and characterized in advance through multiple generations of self-pollination and selection. This preliminary characterization allows breeders to predictably combine specific traits when performing controlled crosses, as the parental contributions are well-understood.
Solution Approach 2:
Specific desirable traits are concentrated in specific parental lines through targeted selection. When creating hybrids, breeders select specific parents for specific traits, allowing predictable combination of local trait improvements rather than random mixing across multiple populations.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH090746. The invention thus relates to the plants, seeds and tissue cultures of the variety CH090746, and to methods for producing a corn plant produced by crossing a corn plant of variety CH090746 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 CH090746.