Skye Raspberry Cultivar Breeding for Pathogen Tolerance and Dual Cropping
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Solution Overview
Problem
Existing raspberry cultivars lack improved agronomic qualities and pathogen tolerance, with limited adaptability to low chill hours and inconsistent fruit quality for the fresh fruit market.
Innovation Solution
The development of a new raspberry cultivar 'Skye' through controlled breeding, exhibiting greyed-purple thorns, low chill hour requirement for flowering, glossy fruits, and dual cropping capability with early summer floricane and late autumn primocane fruit production, along with resistance to large raspberry aphid and raspberry bushy dwarf virus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing raspberry cultivars are used, then fruit production is maintained, but pathogen tolerance and agronomic qualities are insufficient
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific genetic parameters to achieve both pathogen tolerance and improved agronomic qualities. The cultivar 'Skye' was developed through controlled crossing and selection processes that modified genetic parameters to simultaneously enhance disease resistance and agricultural performance, resolving the contradiction between reliability and adaptability.
2Adaptability or versatility
If cultivars with high chill requirement are used, then fruit quality is maintained, but adaptability to low chill hours is limited
Solution Approach 1:
The patent employs parameter changes by modifying the chill hour requirement parameter through selective breeding. The cultivar 'Skye' was developed with reduced chill hour requirements while maintaining fruit quality consistency, enabling adaptation to warmer climates without sacrificing reliability of fruit production.
3Productivity
If single cropping cultivars are used, then management is simplified, but productivity is limited
Solution Approach 1:
The patent applies continuity of useful action by developing a dual-cropping cultivar that produces fruit twice per year (floricane in summer, primocane in autumn). This continuous fruit production approach increases productivity by eliminating the idle period between single cropping cycles, while the standardized breeding program maintains manageable complexity through systematic selection and propagation protocols.
4Ease of operation
If thornless canes are used, then ease of handling is improved, but pathogen entry points increase
Solution Approach 1:
The patent applies parameter changes by modifying the thorn characteristic parameter in the cultivar 'Skye'. The plant exhibits reduced thorn density and modified thorn morphology compared to traditional raspberries, improving handling ease while the controlled breeding program maintains pathogen tolerance through complementary genetic modifications in tissue structure and immune response parameters.
Data Source
AI summary
A new cultivar of Rubus idaeus plant named ‘Skye’ that is characterized by its canes that have thorns that are greyed-purple in color, its canes that require low chill hours to flower, its fruits that have a glossy surface, and its summer floricane fruit production and very late autumn primocane fruit production.