Ofelia SO Raspberry Cultivar Dual Cropping and Shelf-Life
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Solution Overview
Problem
Current red raspberry cultivars lack a variety that offers early to mid-season fruiting on both current and previous season's canes, with desirable fruit characteristics such as firmness, flavor, and long shelf-life, while being easy to pick and propagate.
Innovation Solution
The 'Ofelia SO' cultivar, resulting from a controlled cross between 'Amaranta' and SO.LR.08.25.30, exhibits early to mid-season fruiting on current and previous season's canes, with firm, large, conical red fruits and excellent shelf-life, and can be propagated via root cutting and tissue culture, featuring upright canes, medium vigor, and adaptability to varying temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a raspberry cultivar is selected for early fruiting on current season's cane, then fruit ripening time is improved, but fruit shelf-life and firmness often deteriorate
Solution Approach 1:
The cultivar 'Ofelia SO' exhibits a specific genetic parameter combination that allows early autumn fruiting (August-October) while maintaining exceptional shelf-life (10 days at 1.5-2.5°C) and firmness. This parameter change in the cultivar's physiological characteristics resolves the contradiction between early ripening and post-harvest quality.
2Productivity
If a raspberry cultivar produces two crops per year, then productivity is improved, but plant vigor and energy requirements worsen
Solution Approach 1:
The cultivar dynamically allocates energy resources between two cropping cycles - summer crop on previous season's cane and autumn crop on current season's cane. The plant exhibits medium vigor that allows it to sustain dual cropping without excessive energy depletion, achieving productivity improvement while maintaining energy balance.
3Reliability
If fruit firmness is increased for better shelf-life, then storage capacity is improved, but fruit adherence to plug increases making picking more difficult
Solution Approach 1:
The cultivar achieves a specific parameter combination where fruit firmness (0.045 kg) provides excellent shelf-life and storage capacity (10 days at 1.5-2.5°C) while maintaining low adherence to plug, ensuring easy mechanical picking. This precise parameter balance resolves the contradiction between storage requirements and harvesting ease.
4Volume of moving object
If fruit size is increased, then market value is improved, but fruit firmness and shelf-life often deteriorate
Solution Approach 1:
The cultivar produces large conical fruits (2.3 cm length, 2.4 cm width, 5.6 g weight) that maintain exceptional firmness (0.045 kg) and shelf-life (10 days at 1.5-2.5°C). This parameter combination of increased size with maintained firmness resolves the contradiction between market value and storage quality.
Data Source
AI summary
A new raspberry cultivar named Ofelia SO having good fruit colour and flavour, large and firm conical red berries is disclosed. The new cultivar has the advantages of producing fruits that are easy to pick, with a good colour and flavour and a very good shelf-life.The new variety produces two crops per year: the fruits ripen both on previous season's cane in summer and on current season's cane in autumn.