Corn Variety CV951349 Breeding Segmentation
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Solution Overview
Problem
The challenge in corn breeding is to develop uniform corn hybrids with desirable traits such as high yield, disease resistance, and drought tolerance, while maintaining genetic stability and uniformity.
Innovation Solution
The development of the corn variety CV951349, which is an inbred line that can be used to produce uniform corn hybrids. This variety may include traits such as male sterility, herbicide tolerance, insect resistance, and improved nutritional content, achieved through genetic modification or traditional breeding methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop corn hybrids, then genetic diversity can be achieved, but uniformity and genetic stability of the hybrid population deteriorates
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through multiple generations of self-pollination, then using controlled cross-pollination between specific inbred lines to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the inbred development phase while ensuring uniformity in the final hybrid population.
Solution Approach 2:
Homozygous inbred lines are developed in advance through extended self-pollination and selection before the hybrid crossing stage. This preliminary action ensures that the parental lines are genetically stable and uniform, which then guarantees uniformity in the resulting F1 hybrid population while still allowing for genetic diversity through careful selection of parental combinations.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity improves, but the ability to combine desirable traits from different plants deteriorates
Solution Approach 1:
The breeding system dynamically switches between self-pollination and cross-pollination modes. Self-pollination is used during the inbred line development phase to achieve genetic uniformity, while cross-pollination is employed in the hybridization phase to combine desirable traits from different parental lines. This dynamic approach resolves the contradiction by applying the appropriate pollination method at each breeding stage.
Solution Approach 2:
The breeding program maintains continuous useful action through a multi-generational self-pollination process that progressively increases homozygosity, followed by controlled cross-pollination to combine traits. The continuous selection for desired phenotypes throughout the selfing generations ensures that genetic uniformity is achieved while preserving the ability to combine traits through the subsequent crossing step.
3Stability of the object's composition
If multiple generations of selfing and selection are performed to develop inbred lines, then genetic stability improves, but breeding time and complexity increase
Solution Approach 1:
The patent employs molecular marker technology to substitute for traditional phenotypic selection methods. Molecular markers allow for accelerated selection of desirable traits and monitoring of homozygosity progression, significantly reducing the time required to develop stable inbred lines compared to conventional multi-generational phenotypic selection alone.
Solution Approach 2:
The breeding program utilizes parameter changes in the form of molecular marker profiles to track genetic progress through generations. By monitoring specific genetic markers associated with desirable traits and homozygosity, breeders can make informed decisions about when inbred lines have achieved sufficient stability, potentially reducing the number of generations required compared to waiting for complete phenotypic uniformity.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV951349. The invention thus relates to the plants, seeds and tissue cultures of the variety CV951349, and to methods for producing a corn plant produced by crossing a corn plant of variety CV951349 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 CV951349 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 CV951349.