Dutch Long Cucumber Variety With Multi-Disease Resistance
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Solution Overview
Problem
There is a need for cucumber varieties with improved traits such as resistance to diseases, earlier fruit maturity, and adaptability to environmental conditions, while maintaining uniformity and commercial potential.
Innovation Solution
Development of cucumber variety NUN 83071 CUL, which is resistant to Cladosporium cucumerinum, Cucumber Mosaic Virus (CMV), Podosphaera xanthii, Corynespora cassiicola, Cucumber Vein Yellowing Virus (CVYV), and Cucumber Green Mottle Mosaic Virus (CGMMV), and exhibits characteristics like shorter internode length, stronger plant vigor, and necked fruit shape, suitable for greenhouse cultivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop cucumber varieties, then genetic diversity and trait combination are improved, but breeding time and complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-developing homozygous inbred parental lines with specific desirable traits (disease resistance, fruit quality, yield) before crossing them to produce F1 hybrid seeds. This preliminary development of pure lines accelerates the overall breeding process by having ready-to-use parental materials that guarantee uniform and predictable hybrid performance.
Solution Approach 2:
The breeding program is segmented into distinct phases: developing inbred parental lines with specific traits, crossing them to produce F1 hybrids, and separately evaluating hybrid performance. This segmentation allows parallel development of multiple parental lines with different trait combinations, reducing total breeding time while maintaining genetic diversity.
2Stability of the object's composition
If self-pollination is used to develop uniform varieties, then genetic uniformity is improved, but loss of heterosis and adaptability decreases
Solution Approach 1:
The patent merges the benefits of self-pollination (genetic uniformity of parental lines) with cross-pollination (heterosis in F1 hybrids) by first developing homozygous inbred lines through selfing, then crossing them to produce uniform F1 hybrid populations that exhibit both genetic uniformity and heterotic vigor.
Solution Approach 2:
The breeding system dynamically transitions from self-pollination during parental line development to cross-pollination during hybrid seed production. This dynamic approach allows the breeder to exploit selfing for creating uniform genetic backgrounds, then switching to crossing to capture heterosis in the final hybrid variety.
3Reliability
If multiple disease resistance traits are incorporated into a single variety, then resistance to diseases is improved, but breeding complexity and selection difficulty increase
Solution Approach 1:
The patent applies local quality by assigning specific disease resistance traits to different parental lines (e.g., one parent resistant to powdery mildew, another to downy mildew). This allows each parent to be optimized for specific resistance traits, simplifying the breeding process while ensuring the F1 hybrid inherits multiple resistances from its parents.
Data Source
AI summary
A new and distinct plant of variety NUN 83071 CUL is disclosed as well as seeds and plants and fruits thereof. NUN 83071 CUL is a Dutch long cucumber variety comprising resistance to Cladosporium cucumerinum, Cucumber Mosaic Virus (CMV), Podosphaera xanthii, Corynespora cassiicola, Cucumber Vein Yellowing Virus (CVYV), and Cucumber Green Mottle Mosaic Virus (CGMMV).