Sheegene-21 Grapevine Hybridization for Early Ripening
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Solution Overview
Problem
There is a need for a new variety of Vitis vinifera that produces medium, green-colored seedless grapes with good flavor, which matures earlier than existing varieties and has distinct characteristics from its parent varieties.
Innovation Solution
The 'Sheegene-21' grapevine, resulting from the hybridization of 'Princess' and 'Red Globe', produces medium, green-colored seedless grapes with improved flavor and earlier maturity, maintaining its characteristics through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hybridization of 'Princess' and 'Red Globe' is performed to create new variety, then grape color and seedlessness are improved, but maturity time and flavor quality need to be optimized
Solution Approach 1:
The patent applies parameter changes by selecting specific parent varieties with complementary traits ('Princess' for seedlessness and white color, 'Red Globe' for early maturity and flavor) to achieve the desired green color and seedless characteristics while maintaining early maturity. The hybridization process optimizes genetic parameters to produce grapes that mature in early July, approximately four weeks earlier than 'Thompson Seedless'.
2Manufacturing precision
If hybridization is performed to achieve green color and seedlessness, then grape quality is improved, but flavor consistency needs to be enhanced
Solution Approach 1:
The patent employs feedback mechanisms through rigorous evaluation of the hybrid variety's flavor profile, comparing it against established standards. The 'Sheegene-21' variety demonstrates very good flavor with balanced sugar-acid ratio (0.56) and consistent eating quality, indicating that feedback from sensory evaluation and chemical analysis was used to confirm and refine the flavor characteristics of the new variety.
3Loss of time
If early maturity is achieved through hybridization, then harvest time is improved, but shipping and handling qualities need to be maintained
Solution Approach 1:
The patent applies parameter changes by optimizing the physiological parameters of the grape berries to achieve early maturity while maintaining structural integrity. The 'Sheegene-21' variety exhibits very good shipping and handling qualities despite early July maturity, with firm texture and appropriate skin thickness to prevent damage during transport and storage.
Data Source
AI summary
A new and distinct variety of grapevine characterized by the production of medium, green-colored seedless grapes that mature in early July, approximately four weeks earlier than ‘Thompson Seedless’ (unpatented) when grown in the San Joaquin Valley of Central California. The grapes of this new variety are produced on strong woody stems and branches and are well adapted to commercial handling.