Olsen Bosc Pear Mutation Russeting and Texture

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Solution Overview

Problem

There is a need for a distinct variety of pear tree that exhibits unique fruit characteristics such as intense russeting, smoother skin, and sweeter flesh, which are not adequately met by existing varieties like 'Golden Russet Bosc'.

Innovation Solution

The 'Olsen Bosc' pear tree, discovered as a limb mutation of a 'Bosc' pear tree, is propagated and selected for its distinctive bronze appearance due to profound russeting, smoother texture, and sweeter flesh, distinguishing it from other varieties like 'Golden Russet Bosc'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If conventional pear varieties like 'Golden Russet Bosc' are used, then fruit production is achieved, but the fruit lacks intense russeting and smooth skin texture

Engineering Contradiction:

Improvefruit skin texture and russeting patternVSAvoidvariety distinction from existing types

Core Design Contradiction:

ShapeVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by focusing on specific localized characteristics of the fruit - the russeting pattern covering 95-100% of the skin surface and the smooth texture with fewer bumps - to distinguish the new variety. These localized surface properties become the defining features that differentiate 'Olsen Bosc' from conventional varieties like 'Golden Russet Bosc' which have only 40-60% russeting coverage.

Inventive Principle:

Principle #3Local quality

2Manufacturing precision

If limb mutation is selected for propagation, then unique fruit characteristics are achieved, but genetic stability across generations must be maintained

Engineering Contradiction:

Improvefruit characteristic consistencyVSAvoidgenetic truth-to-type

Core Design Contradiction:

Manufacturing precisionVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action by performing multiple generations of asexual propagation through grafting before commercial release. This preliminary propagation phase allows the breeder to verify that the mutation traits (intense russeting, smooth skin, sweet flesh) are stably inherited and that the buds remain true to type, ensuring genetic stability before widespread cultivation.

Inventive Principle:

Principle #10Preliminary action

3Ease of manufacture

If new variety characteristics are emphasized, then market distinction is achieved, but comparison with existing varieties requires detailed differentiation

Engineering Contradiction:

Improvemarket identificationVSAvoidvariety differentiation

Core Design Contradiction:

Ease of manufactureVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies color changes by emphasizing the distinctive bronze appearance caused by profound russeting that covers 95-100% of the fruit skin surface. This intense bronzing effect, combined with the smooth skin texture, creates a visually distinctive fruit that is easily identifiable in the market and clearly differentiates 'Olsen Bosc' from varieties like 'Golden Russet Bosc' which have lighter and less extensive russeting.

Inventive Principle:

Principle #32Color changes

Data Source

PatentUSPP31444P2Pear tree named ‘Olsen Bosc’

Publication Date: 2020.02.18 OLSEN DAVID

AI summary

The ‘Olsen Bosc’ pear tree, a mutation of ‘Bosc’, is notable for its distinctive fruit. Profound russeting on substantially the entire surface of the skin gives ‘Olsen Bosc’ pears a distinctive bronze appearance.