Sugrafiftytwo Grapevine Early Ripening Large Berry Hybridization
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Solution Overview
Problem
There is a need for a new and distinct variety of grapevine that offers early harvest dates, large-sized green berries with a high brix:acid ratio, and firm texture, which existing grape varieties do not adequately provide.
Innovation Solution
The development of the 'Sugrafiftytwo' grapevine variety, achieved through controlled hybridization of '04006-199-045' and 'GR176W', resulting in larger berries with a low-acidic flavor and higher brix:acid ratio, ripening approximately 31 days earlier than 'GR176W' and maintaining characteristics through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If early harvest date is achieved, then productivity is improved, but berry size may be reduced
Solution Approach 1:
The patent applies parameter changes by creating a new grape variety with modified genetic parameters that allow early ripening while maintaining large berry size. The hybridization of '04006-199-045' and 'GR176W' produced a variety where the ripening parameter is accelerated (31 days earlier than GR176W) while the berry size parameter remains large (7g average weight), resolving the contradiction between early harvest and berry size through genetic parameter optimization.
2Quantity of substance
If large berry size is achieved, then yield is improved, but brix:acid ratio may be reduced
Solution Approach 1:
The patent resolves this contradiction through parameter changes in the genetic composition of the hybrid variety. The new variety maintains large berry size (7g average) while achieving a high brix:acid ratio of 44.2 through selective breeding. This demonstrates that genetic parameter optimization can simultaneously improve quantity (berry size) and quality (brix:acid ratio) parameters that are typically traded off against each other.
3Strength
If firm berry texture is achieved, then storage quality is improved, but juiciness may be reduced
Solution Approach 1:
The patent applies parameter changes by creating a variety with modified cell wall and flesh composition parameters. The berries achieve very firm texture suitable for storage while maintaining juicy characteristics through the specific hybridization of parent varieties. This resolves the contradiction by optimizing the genetic parameters that control both firmness and juiciness, allowing both properties to coexist at high levels.
Data Source
AI summary
A new and distinct variety of grapevine ‘Sugrafiftytwo’ is characterized by an early harvest date, the production of a large-sized, green, broad elliptic berry and a high brix:acid ratio. The berries of ‘Sugrafiftytwo’ are very firm.