Early-Season Plum Variety With Large Fruit and Sweet-Mild Flavor

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Solution Overview

Problem

There is a need for a new and distinct variety of plum tree that exhibits specific characteristics such as large, black-skinned, red-fleshed fruit with a sweet-mild flavor, early ripening, and improved fruit weight, acidity, and Brix:Acid ratio, which are not adequately addressed by existing plum varieties.

Innovation Solution

The development of the plum tree variety 'SUPLUM65', which is a result of hybridization between 'Suplumfiftyfour' and 'PL1396RB', characterized by circular-shaped fruit with black skin, firm red flesh, and a sweet-mild flavor, with improved ripening timing, fruit weight, and Brix:Acid ratio, and maintained through asexual propagation methods like grafting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If early-season plum varieties are cultivated, then harvest time is advanced, but fruit size and weight are reduced

Engineering Contradiction:

Improveharvest timeVSAvoidfruit weight

Core Design Contradiction:

Loss of timeVSWeight of moving object

Solution Approach 1:

The patent applies parameter changes by selectively breeding for specific genetic traits that alter the growth and ripening parameters of the plum fruit. Through hybridization and selection, the variety 'SUPLUM65' achieves a unique combination of early harvest timing (June 11th) and large fruit weight (165g), overcoming the traditional trade-off between these parameters.

Inventive Principle:

Principle #35Parameter changes

2Loss of time

If fruit ripening is accelerated for early harvest, then harvest time is advanced, but flavor development and sugar content are reduced

Engineering Contradiction:

Improveripening timeVSAvoidsugar content (Brix)

Core Design Contradiction:

Loss of timeVSUse of energy by moving object

Solution Approach 1:

The patent utilizes parameter changes by breeding for optimized ripening parameters that allow accelerated maturation while maintaining high sugar content. The variety 'SUPLUM65' achieves 17° Brix and 0.70% titratable acidity with early June harvest, demonstrating that ripening speed and flavor development can be independently optimized through genetic selection.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies preliminary action through the hybridization program that pre-selects parent varieties with complementary traits. The seed parent 'Suplumfiftyfour' contributes early ripening genes while the pollen parent 'PL1396RB' contributes high sugar content and red flesh characteristics, combining these traits before the actual fruit development occurs.

Inventive Principle:

Principle #10Preliminary action

3Weight of moving object

If fruit size is increased for larger yield, then fruit weight is improved, but tree vigor and productivity are reduced

Engineering Contradiction:

Improvefruit weightVSAvoidtree productivity

Core Design Contradiction:

Weight of moving objectVSProductivity

Solution Approach 1:

The patent applies parameter changes by breeding for optimized tree growth parameters that support large fruit production without sacrificing overall productivity. The variety 'SUPLUM65' produces 165g fruits with strong tree vigor and high productivity, achieving a balance between individual fruit size and overall crop yield through selective breeding.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP37090P2Plum tree named ‘SUPLUM65’

Publication Date: 2025.11.11 SUN WORLD INT LLC

AI summary

The new variety ‘SUPLUM65’ is characterized by having circular-shaped fruit that is very large sized for an early-season plum, with black-colored skin, firm, red-colored flesh, and a sweet-mild flavor.