Black Seedless Grapevine With Soft Seed Traces and Late Ripening
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Solution Overview
Problem
Existing grapevine cultivars lack a late-ripening, black seedless table grape with fruit characteristics distinguishable from 'Autumn Royal', particularly in terms of seed trace visibility, berry shape, and flavor profile.
Innovation Solution
Development of a new grapevine cultivar 'SV34-134-463' derived from a cross between 'SV17-50-583' and 'SV19-28-68', characterized by small, soft seed traces, elliptical berries, and neutral flavor, which does not require ethephon application for ripening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a late-ripening black seedless table grape is developed, then fruit characteristics are improved, but distinguishability from existing cultivars like 'Autumn Royal' becomes challenging
Solution Approach 1:
The patent applies local quality by focusing on specific distinguishable characteristics of the fruit rather than overall similarity. The new cultivar 'SV34-134-463' is distinguished by its small, soft seed traces that are not noticeable when eating, contrasting with the well-lignified seed traces of 'Autumn Royal'. This localized differentiation in seed trace properties allows the cultivar to be distinguished while maintaining similar late-ripening black seedless fruit characteristics.
2Ease of operation
If seed traces are made smaller and softer, then eating quality is improved, but structural definition of the berry is reduced
Solution Approach 1:
The patent applies parameter changes by modifying the physical properties of the seed traces. The seed traces in 'SV34-134-463' are described as small and soft with no noticeable lignification, representing a change in the hardness and size parameters compared to traditional cultivars. This parameter modification improves eating quality while the elliptical berry shape maintains sufficient structural definition.
3Device complexity
If ethephon application is eliminated, then production complexity is reduced, but ripening control capability is lost
Solution Approach 1:
The patent applies self-service by developing a cultivar that naturally ripens without requiring external chemical assistance. The new grapevine 'SV34-134-463' produces berries that ripen uniformly without ethephon application, meaning the plant itself provides the necessary ripening function through its genetic characteristics rather than requiring external intervention.
Data Source
AI summary
A new and distinct variety of grapevine plant named ‘SV34-134-463’ particularly characterized by its very large, dark black colored elliptical shaped berries that have a neutral flavor when grown under normal horticultural practices near McFarland, California.


