Corn Variety CV957366 for Uniform Hybrid Breeding
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop uniform hybrids with desirable traits such as higher yield, better stalks, resistance to pests and diseases, and tolerance to environmental stressors, due to genetic non-uniformity in cross-pollinated plants.
Innovation Solution
The development of the corn variety CV957366, 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 regenerating plants with consistent morphological and physiological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop corn hybrids, then genetic diversity and adaptability are improved, but genetic uniformity and predictability deteriorate
Solution Approach 1:
The breeding program segments the development process into distinct phases: creating homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to generate hybrids with controlled genetic diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
The patent applies preliminary action by first developing homozygous inbred parental lines with stable, uniform genetics through multiple generations of self-pollination and selection. Only after establishing these genetically standardized parents does the program proceed to cross-pollination, ensuring that the subsequent hybrids inherit predictable and uniform traits.
2Stability of the object's composition
If self-pollination is used to create homozygous lines, then genetic uniformity is improved, but genetic diversity and adaptability worsen
Solution Approach 1:
Self-pollination and selection are applied as preliminary actions to create genetically uniform homozygous inbred lines. This uniformity is intentionally established in the parental generation to ensure consistency and predictability, which are prerequisites for successful hybrid development.
Solution Approach 2:
The patent merges multiple homozygous inbred lines with different genetic backgrounds through controlled cross-pollination. This combining of genetically uniform parents produces hybrids that exhibit heterosis (hybrid vigor), achieving both genetic uniformity within the hybrid population and enhanced adaptability through the combination of diverse parental genomes.
3Adaptability or versatility
If extensive breeding programs are implemented to combine multiple desirable traits, then trait diversity is improved, but breeding complexity and time required worsen
Solution Approach 1:
The breeding program segments trait incorporation into distinct phases: first developing inbred lines with specific desirable traits through self-pollination and selection, then combining these pre-sorted lines through cross-pollination to accumulate multiple traits in the final hybrid. This segmentation prevents the need to manage all traits simultaneously, reducing program complexity.
Solution Approach 2:
Desirable traits are preliminarily established in individual inbred parental lines before crossing. Each parent line is developed to possess specific target traits through focused selection and breeding, so that the final hybrid inherits a comprehensive set of traits from its parents without requiring complex simultaneous manipulation of all traits.
4Stability of the object's composition
If multiple generations of selfing and selection are performed to develop inbred plants, then genetic uniformity is improved, but time required and productivity worsen
Solution Approach 1:
Multiple generations of selfing and selection are performed as preliminary actions to rapidly establish homozygosity in parental inbred lines. Once these lines achieve sufficient genetic uniformity, the breeding program transitions to cross-pollination, which produces uniform hybrid progeny in a single generation, thereby accelerating overall productivity.
Solution Approach 2:
The patent uses tissue culture techniques to create multiple copies of selected inbred plants and their regenerative cells. This allows rapid propagation of genetically uniform material without requiring additional generations of selfing, significantly reducing the time required to produce large quantities of standardized planting material while maintaining homozygosity.
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the corn variety designated CV957366. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CV957366, and to methods for producing a corn plant produced by crossing a corn plant of variety CV957366 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 CV957366 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 CV957366.