Corn Variety CV082720 Breeding for Genetic Uniformity
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform corn hybrids with desirable traits such as high yield, disease resistance, and uniform germination times, as they often result in unpredictable performance due to genetic non-uniformity from crossing heterozygous plants.
Innovation Solution
The development of the corn variety CV082720, which includes a cytoplasmic or nuclear factor for male sterility and additional heritable traits like herbicide tolerance and disease resistance, along with a process for producing hybrid seeds by crossing inbred plants to ensure genetic uniformity and desirable characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plants, then genetic diversity and trait variety are improved, but genetic uniformity and performance predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to achieve desired genetic diversity. This segmentation allows control over when diversity is introduced while maintaining predictability through standardized parental lines.
Solution Approach 2:
The patent changes the genetic homogeneity parameter by first creating highly homozygous inbred lines (high uniformity) and then using controlled cross-pollination between specific lines to achieve the desired balance of diversity and predictability in the final hybrid population.
2Manufacturing precision
If self-pollination is used to develop uniform inbred lines, then genetic uniformity and true breeding are improved, but genetic diversity and trait combination are limited
Solution Approach 1:
Self-pollination and selection are performed as preliminary actions to develop standardized homozygous inbred lines with desired traits established before the final cross-pollination step. This preliminary uniformity creation enables predictable and controlled hybridization in subsequent steps.
Solution Approach 2:
Multiple inbred lines, each developed through self-pollination to achieve uniformity, are merged through controlled cross-pollination to combine their respective desirable traits while maintaining overall population uniformity through standardized parental selection.
3Adaptability or versatility
If crossing heterozygous plants is performed to combine traits, then trait variety is improved, but genetic uniformity and population consistency deteriorate
Solution Approach 1:
The patent uses standardized inbred lines as reproducible genetic copies that can be consistently propagated through self-pollination. These standardized genetic copies serve as uniform parental material for crossing, ensuring that each cross starts with known, uniform genetic backgrounds rather than variable heterozygous plants.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV082720. The invention thus relates to the plants, seeds and tissue cultures of the variety CV082720, and to methods for producing a corn plant produced by crossing a corn plant of variety CV082720 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 CV082720 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 CV082720.