Paraiso Hybrid Cucumber Breeding via Marker-Assisted Selection
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Solution Overview
Problem
Cucumber breeding is a time-consuming and unpredictable process due to the complexity of combining desirable traits such as high yield, disease resistance, and environmental adaptability, with breeders facing challenges in identifying superior genetic lines amidst confounding traits and environmental factors.
Innovation Solution
The development of the 'Paraiso' hybrid cucumber cultivar, which is parthenocarpic, has intermediate resistance to powdery mildew, cucumber mosaic virus, and other viruses, and is bred using advanced techniques like molecular marker-assisted selection and transformation to incorporate transgenes for improved traits, ensuring stability and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cucumber breeding methods are used to combine desirable traits, then genetic diversity and adaptability are improved, but the breeding process becomes time-consuming and unpredictable
Solution Approach 1:
The patent replaces traditional mechanical breeding methods (manual crossing, selection, and evaluation) with molecular marker-assisted selection technology. This substitution enables breeders to identify and select plants with desired traits at the DNA level, dramatically reducing the time required to develop new cucumber varieties while maintaining genetic diversity and environmental adaptability.
Solution Approach 2:
The patent introduces molecular markers as intermediaries between phenotypic observation and genotypic selection. These markers serve as reliable indicators of desirable traits, allowing breeders to select plants based on genetic markers rather than waiting for phenotypic expression, thereby accelerating the breeding process without sacrificing adaptability.
2Reliability
If multiple desirable traits are combined in cucumber breeding, then disease resistance and yield are improved, but the complexity of identifying superior genetic lines increases
Solution Approach 1:
The patent segments the complex task of selecting for multiple traits into separate, manageable components by developing specific molecular markers for each desired trait (disease resistance, yield, quality). This segmentation allows breeders to evaluate and select for each trait independently using marker-assisted selection, reducing the overall complexity of the breeding program while achieving reliable disease resistance.
Solution Approach 2:
The patent replaces complex phenotypic evaluation systems with molecular marker-based detection systems. This substitution simplifies the identification of superior genetic lines by providing direct, reliable detection of disease resistance genes and other desirable traits at the molecular level, eliminating the need for complex field trials and subjective assessments.
3Stability of the object's composition
If conventional breeding methods are used, then natural genetic variation is maintained, but precision in selecting superior traits is reduced
Solution Approach 1:
The patent replaces imprecise phenotypic selection methods with precise molecular marker-based selection. This substitution enables exact identification and selection of plants carrying specific desirable genes and genetic variations, achieving high precision in trait selection while maintaining the stability of the cucumber genome through controlled marker-assisted breeding programs.
Data Source
AI summary
A hybrid cucumber cultivar designated ‘Paraiso’ is disclosed which is the first parthenocarpic slicing cucumber that also has intermediate resistance to powdery mildew, cucumber mosaic virus, cucumber vein yellowing virus and cucumber yellow stunting disorder virus. The invention relates to the seeds of hybrid cucumber cultivar ‘Paraiso’, to the plants of hybrid cucumber cultivar ‘Paraiso’ and to methods for producing a cucumber plant, either inbred or hybrid, by crossing the hybrid cultivar ‘Paraiso’ with itself or another cucumber cultivar. The invention further relates to methods for producing a cucumber plant containing in its genetic material one or more transgenes and to the transgenic plants produced by that method and to methods for producing other cucumber cultivars derived from the hybrid ‘Paraiso’.