Corn Variety CV998724 for Uniform Hybrid Breeding
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Solution Overview
Problem
Existing corn breeding methods struggle to develop uniform hybrids with desirable traits such as increased yield, disease resistance, and drought tolerance, often resulting in unpredictable performance due to genetic non-uniformity from cross-pollination between heterozygous plants.
Innovation Solution
The development of the corn variety CV998724, which is homozygous and self-incompatible, combined with genetic modifications for traits like herbicide tolerance and insect resistance, and the use of tissue culture for regenerable cells to maintain uniformity and desired 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 potential for improved traits increase, but genetic non-uniformity and unpredictability of performance occur
Solution Approach 1:
The breeding process is segmented into distinct phases: creating heterozygous hybrids through cross-pollination, then separating them through self-pollination to produce homozygous inbred lines. This segmentation allows the system to first explore genetic diversity, then systematically eliminate non-uniformity through repeated selfing and selection cycles.
Solution Approach 2:
The patent changes the genetic parameter from heterozygous state to homozygous state through repeated self-pollination and selection. By altering the genotype parameter across multiple generations, the system achieves uniformity while preserving the beneficial traits introduced through initial cross-pollination.
2Manufacturing precision
If self-pollination is used to create uniform inbred plants, then genetic uniformity and predictability improve, but the ability to combine diverse desirable traits from different parents is reduced
Solution Approach 1:
The patent performs preliminary cross-pollination between different inbred lines to create heterozygous hybrids that combine desirable traits from both parents. Only after this preliminary action does it proceed to self-pollination and selection to achieve uniformity, ensuring that trait combination occurs before uniformity is enforced.
Solution Approach 2:
The breeding system dynamically transitions between two states: heterozygous hybridization phase where diversity is introduced, and homozygous inbreeding phase where uniformity is achieved. This dynamic switching allows the system to optimize for different objectives at different stages of the breeding process.
3Manufacturing precision
If multiple generations of selfing and selection are performed to achieve homozygosity, then uniformity of true-breeding progeny is achieved, but time and complexity of the breeding process increase
Solution Approach 1:
The patent implements feedback through phenotypic selection at each generation. Plants are evaluated for desired traits, and only those exhibiting the desired characteristics are selected for the next generation. This feedback mechanism accelerates the path to homozygosity by eliminating non-conforming individuals early, reducing the number of generations required.
Solution Approach 2:
The patent replaces manual, labor-intensive selection processes with systematic evaluation criteria and controlled pollination protocols. By standardizing the selection process and using controlled cross-pollination techniques, the system reduces the time and complexity associated with achieving homozygosity.
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the corn variety designated CV998724. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CV998724, and to methods for producing a corn plant produced by crossing a corn plant of variety CV998724 with itself or with another corn plant, such as a plant of another variety. The disclosure further relates to corn seeds and plants produced by crossing plants of variety CV998724 with plants of another variety, such as another inbred line. The disclosure further relates to the inbred and hybrid genetic complements of plants of variety CV998724.