Seedless Grapevine Breeding for Early-Ripening Black Table Grapes

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Solution Overview

Problem

Existing grapevine cultivars lack early-ripening, seedless table grapes with fruity flavor and heavy fruit production, and exhibit undesirable characteristics such as large, lignified seeds and persistent green ovules in clusters.

Innovation Solution

Development of a new grapevine cultivar 'SV35-5-61' through cross-breeding, resulting in early-ripening, seedless berries with fruity flavor and very heavy fruit production, characterized by small, soft seed traces and absence of persistent green ovules in clusters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If existing grapevine cultivars are used, then fruit production is maintained, but ripening time is delayed and seed quality is poor (large, lignified seeds)

Engineering Contradiction:

Improveripening timeVSAvoidseed quality

Core Design Contradiction:

SpeedVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by selecting and breeding for specific genetic traits that alter the ripening timeline and seed development parameters. The new cultivar 'SV35-5-61' exhibits changed parameters including early ripening (July vs September), reduced seed size, and softened seed texture, achieving both faster ripening and improved seed quality simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent inverts the conventional approach by selecting for the absence or reduction of lignified seeds rather than accepting them as inevitable. The cultivar produces seedless berries or berries with only small, soft seed traces, effectively inverting the typical grape seed characteristics to achieve the desired quality profile

Inventive Principle:

Principle #13The other way round (Inversion)

2Productivity

If existing grapevine cultivars are used, then fruit production is maintained, but cluster quality deteriorates (persistent green ovules present)

Engineering Contradiction:

Improvefruit productionVSAvoidcluster quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies the extraction principle by eliminating the undesirable persistent green ovules from the cluster. The new cultivar 'SV35-5-61' naturally lacks this characteristic, extracting the harmful element (green ovules) from the fruit cluster while maintaining high productivity, resulting in cleaner, more marketable fruit

Inventive Principle:

Principle #2Taking out (Extraction)

3Speed

If early-ripening is achieved through breeding, then ripening speed increases, but disease susceptibility may increase

Engineering Contradiction:

Improveripening speedVSAvoiddisease susceptibility

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential harm of early ripening (increased disease susceptibility) into a benefit by selecting for cultivars that maintain commercial viability despite powdery mildew susceptibility. The early July ripening allows harvest before peak disease pressure, and standard control measures are sufficient, making the early maturation advantage outweigh the manageable disease risk

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20260041018P1Grapevine plant named `SV35-5-61'

Publication Date: 2026.02.05 SUNVIEW VINEYARDS OF CALIFORNIA INC

AI summary

A new and distinct variety of grapevine plant named ‘SV35-5-61’ particularly characterized by its black colored, ovate shaped seedless berries that have a fruity flavor and which ripen in early July in the McFarland, California arca.