SUGRA68 Grapevine Cultivar for Large Early-Ripening Berries
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Solution Overview
Problem
There is a need for a new and distinct variety of grapevine that produces large-sized, dark red violet, cylindrical berries with early season ripening, distinct from existing varieties in terms of berry shape, weight, and ripening time, while maintaining consistent characteristics through asexual propagation.
Innovation Solution
The development of the grapevine variety 'SUGRA68', characterized by controlled hybridization of specific parent varieties, resulting in berries with unique features such as cylindrical shape, larger size, and early ripening, achieved through asexual propagation methods like cuttings and grafting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If controlled hybridization is used to develop new grapevine varieties, then berry size and shape can be improved, but breeding time and complexity increase
Solution Approach 1:
The patent applies preliminary action by performing controlled hybridization between selected parent varieties ('GR458R' and bulk pollen mixture) before commercial propagation. The breeding process was completed and the new variety 'SUGRA68' was stabilized through asexual propagation, allowing the large berry size trait to be established beforehand. This enables direct commercial planting without repeated breeding cycles, thus resolving the time-loss contradiction.
2Stability of the object's composition
If asexual propagation is used to maintain variety characteristics, then berry shape and size consistency is improved, but propagation cost and complexity increase
Solution Approach 1:
The patent applies copying through asexual propagation methods (cuttings and grafting) to replicate the exact genetic characteristics of the parent plant. This creates identical copies of the superior berry traits (cylindrical shape, large size, early ripening) without the complexity of repeated hybridization, thus maintaining composition stability while managing propagation complexity.
3Loss of time
If early season ripening is achieved through selective breeding, then market timing is improved, but berry weight may be reduced
Solution Approach 1:
The patent applies parameter changes by selectively breeding for early ripening (July 8) while simultaneously maintaining large berry weight (8.3 g). The new variety 'SUGRA68' achieves this by combining genetic traits from parent varieties, changing the ripening time parameter without sacrificing the weight parameter, thus resolving the contradiction between early market timing and berry size.
4Shape
If cylindrical berry shape is developed, then market distinction is improved, but berry uniformity may be reduced
Solution Approach 1:
The patent applies local quality by developing the cylindrical shape as a specific local characteristic of the berry while maintaining overall uniformity through controlled asexual propagation. The distinctive cylindrical form (compared to conventional spherical berries) provides market differentiation, while the cloning process ensures each berry within a cluster maintains this shape consistently, resolving the contradiction between shape distinction and uniformity.
Data Source
AI summary
The new variety of grapevine ‘SUGRA68’ is characterized by the production of a large-sized, dark red violet and cylindrical berry with an early season ripening date. The berries of ‘SUGRA68’ are moderately firm and juicy.