Seedless Red Table Grapevine With Early Ripening and Crisp Berries
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Solution Overview
Problem
There is a need for an early ripening red table grape cultivar with seedless, dark red berries and specific horticultural characteristics such as crisp texture and medium size, which are not adequately addressed by existing grapevine varieties.
Innovation Solution
The development of a new grapevine cultivar named 'SV34-161-275', derived from a cross between 'Red Globe' and 'Princess', featuring seedless red berries, dark red berry color, and crisp texture, which can be enhanced in size and uniformity with gibberellic acid application and trunk girdling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional grapevine varieties are used, then established cultivation practices can be maintained, but the berries are either seeded or not dark red in color
Solution Approach 1:
The patent combines desirable traits from two different grapevine varieties through hybridization: the seedless characteristic from the female parent 'Red Globe' and the dark red berry color from the male parent 'Princess'. This merging of traits from different parental lines creates a new cultivar that simultaneously achieves both seedless berries and dark red coloration, resolving the contradiction between achieving specific berry characteristics and maintaining variety flexibility.
Solution Approach 2:
The patent achieves the desired berry characteristics by changing the genetic parameters through controlled hybridization between specific parental varieties. The cross between 'Red Globe' and 'Princess' produces offspring with modified genetic parameters that result in seedless berries with dark red color, demonstrating parameter changes at the genetic level to achieve the target phenotype.
2Volume of moving object
If gibberellic acid application and trunk girdling are applied, then berry size more than doubles, but additional horticultural management is required
Solution Approach 1:
The patent utilizes parameter changes through the application of gibberellic acid (a plant growth regulator) and trunk girdling (a physiological intervention) to dramatically increase berry size. These treatments change the physiological parameters of the plant, causing berries to more than double in size. The contradiction is resolved by accepting the additional management complexity as a trade-off for achieving significantly larger berry volume.
Solution Approach 2:
The horticultural treatments of gibberellic acid application and trunk girdling are performed at specific times during the growing season to optimize berry development. By applying these treatments preliminarily at the right stage, the patent achieves maximum berry size enhancement while managing the complexity through scheduled, targeted interventions rather than continuous management.
3Loss of time
If early ripening is achieved, then harvest time is reduced, but fruit quality characteristics may be compromised
Solution Approach 1:
The patent merges the early ripening characteristic with high fruit quality by selecting and crossing parental varieties that contribute both traits. The resulting cultivar inherits the ability to ripen early while maintaining crisp texture and uniform berry size, demonstrating that early maturation does not necessarily compromise quality when achieved through careful variety selection and hybridization.
Solution Approach 2:
The patent achieves early ripening through genetic parameter changes in the hybrid cultivar, which alters the physiological development rate. Simultaneously, the cultivar maintains quality parameters such as crisp texture and uniform size through controlled inheritance from parental varieties, resolving the contradiction by changing temporal parameters without sacrificing quality attributes.
Data Source
AI summary
A new and distinct variety of grapevine plant named ‘SV34-161-275’ particularly characterized by its medium, red skinned berries that are oblate to ovate in shape with a crisp texture and neutral flavor and which ripen in July in the McFarland, California area.