Sugrathirtytwo Grapevine Seedless Fruit Quality
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Solution Overview
Problem
There is a need for a new variety of grapevine that produces early-mid-season ripening, aromatic, red-skinned, seedless grapes with excellent eating quality and consistent color development even under hot weather conditions, which existing varieties fail to provide effectively.
Innovation Solution
The development of the 'Sugrathirtytwo' grapevine variety through controlled hybridization and embryo rescue methods, combining the characteristics of seedless grapes with medium-sized, elliptic berries and a unique flavor profile, achieved by crossing varietal selections '88124-037-243' and '88047-004-226', and propagated using hardwood cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing seedless grape varieties are used, then seedless characteristic is maintained, but color development is poor under hot weather conditions
Solution Approach 1:
The patent applies parameter changes by modifying the genetic composition of the grape variety through controlled hybridization between 'Chelan' and 'Flame Seedless'. This creates a new variety 'Sugrathirtytwo' with altered physiological parameters that enable stable red color development (anthocyanin production) under hot weather conditions, resolving the contradiction between temperature tolerance and color consistency.
2Adaptability or versatility
If hybridization is performed to create new variety, then improved characteristics are achieved, but breeding complexity increases
Solution Approach 1:
The patent applies the extraction principle by using embryo rescue techniques to extract and salvage viable embryos from hybrid seeds that would otherwise be non-viable due to incompatible parentage. This allows the breeding process to proceed despite the inherent complexity of crossing two different seedless varieties, enabling the creation of 'Sugrathirtytwo' with desired traits while managing breeding complexity through targeted intervention.
3Quantity of substance
If berry size is increased, then yield is improved, but berry uniformity decreases
Solution Approach 1:
The patent applies preliminary action through controlled thinning practices performed during fruit development. By selectively removing excess berries early in the season, the vine's resources are redirected to support uniform growth of remaining berries. This preliminary intervention ensures that berries achieve larger size while maintaining uniformity in shape, color, and ripening, resolving the contradiction between quantity and composition stability.
Data Source
AI summary
A new and distinct grapevine variety characterized by producing red skinned, aromatic flavored, elliptical berries that have an excellent eating quality. The berries ripen early to mid-season, having a naturally medium size, a crisp flesh texture, and have medium and up sugar content.