SUGRA71 Grapevine Variety for Stable Late-Season Berry Traits

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Solution Overview

Problem

There is a need for new and distinct grapevine varieties that exhibit unique characteristics such as berry size, color, ripening date, and weight, which are not adequately addressed by existing cultivars, and these traits should be stable across asexual propagation.

Innovation Solution

The development of a new grapevine variety named 'SUGRA71', characterized by large, dark red, obtuse ovate berries with a very late ripening date, moderate firmness, and specific weight, achieved through controlled hybridization and asexual propagation using hardwood cuttings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing grapevine cultivars are used, then common berry traits are produced, but unique characteristics such as berry size, color, ripening date, and weight are not adequately addressed

Engineering Contradiction:

Improveunique berry characteristicsVSAvoidtrait stability across propagation

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action through controlled hybridization before propagation. The unique berry characteristics (size, color, ripening date, weight) were established through deliberate cross-breeding of parent varieties 'Sugrafortyeight' and 'Sugra60' before any propagation occurred. This preliminary genetic combination created the distinctive traits that are then maintained through asexual propagation methods.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses asexual propagation methods (cuttings, grafting, layering) to create exact genetic copies of the hybrid vine. This copying process ensures that the unique berry characteristics established in the hybrid are stably reproduced across multiple generations without genetic variation, resolving the contradiction between uniqueness and stability.

Inventive Principle:

Principle #26Copying

2Loss of time

If early ripening varieties are selected, then earlier harvest is achieved, but very late season ripening characteristics are lost

Engineering Contradiction:

Improveharvest timingVSAvoidripening date consistency

Core Design Contradiction:

Loss of timeVSStability of the object's composition

Solution Approach 1:

The patent changes the temporal parameter of ripening date through hybridization. The resulting variety 'SUGRA71' exhibits very late season ripening (starting September 25th), which is a significant parameter change from early or mid-season varieties. This parameter change is then stabilized through asexual propagation, ensuring consistent late ripening across all propagated plants.

Inventive Principle:

Principle #35Parameter changes

3Volume of moving object

If berry size is increased, then larger berries are produced, but berry weight control at specific levels is compromised

Engineering Contradiction:

Improveberry sizeVSAvoidberry weight precision

Core Design Contradiction:

Volume of moving objectVSManufacturing precision

Solution Approach 1:

The patent applies local quality by producing large berries (9g average weight, classified as large-sized) with specific localized characteristics. The berries exhibit large volume while maintaining precise weight control through the genetic inheritance from parent varieties. Each berry locally exhibits the optimal combination of size and weight precision that distinguishes this variety from others.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUSPP36908P2Grapevine plant named ‘SUGRA71’

Publication Date: 2025.09.02 SUN WORLD INT LLC

AI summary

The new variety of grapevine ‘SUGRA71’ is characterized by the production of a large-sized, dark red and obtuse ovate berry with a very late season ripening date. The berries of ‘SUGRA71’ are moderately firm and very juicy.