Corn Variety CV140658 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 uniformity, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV140658, which includes a cytoplasmic or nuclear factor for male sterility and additional heritable traits like herbicide tolerance and disease resistance, combined with advanced breeding methods and genetic transformation techniques to create stable inbred plants and hybrid seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional corn breeding techniques are used to develop hybrids, then various desirable traits can be combined in a single variety, but genetic non-uniformity among hybrid plants results in unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through self-pollination, then crossing these stabilized lines to produce uniform hybrids. This segmentation allows each phase to optimize for its specific goal, ensuring genetic uniformity in the final hybrid population
Solution Approach 2:
Homozygous inbred plants are developed through preliminary self-pollination and selection before the hybrid crossing stage. This preliminary stabilization of parental lines ensures that the resulting hybrids will be genetically uniform and perform predictably
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniform true breeding progeny are produced, but the breeding process requires extensive generations of selection
Solution Approach 1:
Once homozygous inbred lines are established, they serve as stable genetic copies that can be repeatedly crossed to produce identical uniform hybrids. The inbred lines act as reusable genetic templates, eliminating the need to restart the lengthy homozygization process for each hybrid generation
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity is increased, but the resulting population is non-uniform and performance is unpredictable
Solution Approach 1:
The patent applies different genetic strategies to different parts of the breeding system: homozygous inbred lines are maintained with complete genetic uniformity, while the hybrid cross introduces controlled genetic diversity. This local differentiation of genetic quality allows both uniformity and adaptability to coexist in the breeding program
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV140658. The invention thus relates to the plants, seeds and tissue cultures of the variety CV140658, and to methods for producing a corn plant produced by crossing a corn plant of variety CV140658 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 CV140658 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 CV140658.