Corn Variety CV883463 for Uniform Trait Combination
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop uniform hybrid plants with desirable traits such as increased yield, disease resistance, and pest tolerance, often resulting in unpredictable performance due to genetic non-uniformity.
Innovation Solution
The development of the corn variety CV883463, which includes cytoplasmic or nuclear factors for male sterility, heritable traits like herbicide tolerance and insect resistance, and genetic modifications through single locus conversions using engineered nucleases, along with tissue culture methods to ensure uniformity and desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding techniques are used to develop corn hybrids, then various desirable traits can be combined in a single variety, but genetic non-uniformity results in unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through self-pollination and selection, then crossing these standardized inbreds to produce uniform hybrid progeny. This segmentation ensures each parental line is genetically stable before combination, resolving the contradiction between trait versatility and performance predictability.
Solution Approach 2:
The patent emphasizes creating homogeneous populations through homozygous inbred plants that are uniform genetically. By ensuring both parental inbreds are homozygous and uniform, the resulting F1 hybrid population achieves genetic homogeneity, which guarantees predictable performance while maintaining the ability to combine multiple desirable traits from different parental lines.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniform true breeding progeny are produced, but time and generations required for breeding increase
Solution Approach 1:
The patent employs preliminary selection and stabilization actions during the inbred development phase, where plants are self-pollinated and selected for desired traits over multiple generations to establish homozygous parental lines before the actual hybrid crossing. This preliminary preparation of uniform inbreds accelerates the overall process by ensuring genetic stability is achieved beforehand, reducing the time needed for subsequent hybrid performance evaluation.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity and trait combination are achieved, but genetic non-uniformity makes performance unpredictable
Solution Approach 1:
Before performing cross-pollination to create hybrids, the patent requires that both parental lines be预先 developed as homozygous inbreds with uniform genetics. This preliminary standardization of parental genomes ensures that when cross-pollination occurs, the resulting F1 hybrid population is genetically uniform and predictable, while still combining desirable traits from both parents. The preliminary action of creating uniform inbreds resolves the contradiction between trait combination and population uniformity.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV883463. The invention thus relates to the plants, seeds and tissue cultures of the variety CV883463, and to methods for producing a corn plant produced by crossing a corn plant of variety CV883463 with itself or with another corn plant, such as a plant of another variety. The invention further relates to corn seeds and plants produced by crossing plants of variety CV883463 with plants of another variety, such as another inbred line. The invention further relates to the inbred and hybrid genetic complements of plants of variety CV883463.