Corn Variety CV416823 Breeding for Genetic Stability
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like yield, disease resistance, and uniformity, but existing methods face challenges in developing stable inbred plants with predictable performance, especially in achieving uniformity and maintaining genetic stability across generations.
Innovation Solution
The development of the corn variety CV416823, which includes a cytoplasmic or nuclear factor for male sterility and genetic modifications such as single locus conversions for traits like herbicide tolerance and disease resistance, along with tissue culture techniques for regenerating plants with consistent morphological and physiological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional breeding methods are used to develop inbred plants, then genetic diversity can be maintained, but uniformity and predictability of performance are reduced
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 inbreds to produce uniform F1 hybrids. This segmentation allows genetic stability to be established at the inbred level while achieving uniformity at the hybrid level.
Solution Approach 2:
The patent applies parameter changes by transitioning from heterogeneous breeding populations to homozygous inbred lines with fixed genetic parameters. Through repeated self-pollination and selection, the genetic composition parameters are standardized, enabling predictable performance in subsequent hybrid crosses.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then overall performance is improved, but the complexity of breeding programs increases
Solution Approach 1:
The patent merges multiple desirable traits by crossing inbred lines that each possess specific trait combinations. The F1 hybrid inherits and expresses the combined traits from both parental inbreds, achieving trait consolidation in a single uniform variety.
Solution Approach 2:
The breeding program develops inbred lines with universal applicability—each inbred can be crossed with multiple different partners to produce hybrids with various trait combinations. This multi-functionality allows the same inbred to contribute to multiple hybrid varieties with different trait profiles.
3Manufacturing precision
If self-pollination is used to create homozygous inbreds, then uniformity is achieved, but the time required for breeding increases
Solution Approach 1:
The patent applies preliminary action by performing multiple generations of self-pollination and selection in advance to create fully homozygous inbred lines before the actual hybridization. This preliminary standardization of genetic composition accelerates the overall breeding process by eliminating the need for subsequent uniformity selection in the hybrid generation.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV416823. The invention thus relates to the plants, seeds and tissue cultures of the variety CV416823, and to methods for producing a corn plant produced by crossing a corn plant of variety CV416823 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 CV416823 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 CV416823.