Western Dawn Apple Breeding for Oxidation Resistance

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Solution Overview

Problem

Current apple varieties face challenges in early maturity, skin color differentiation, and fruit quality characteristics such as oxidation resistance, making them less desirable for fresh market and processing.

Innovation Solution

The apple variety 'Western Dawn' is developed through controlled crossing of 'Lady Williams' and 'Golden Delicious', exhibiting earlier maturity, distinctive red-pink skin, and excellent eating qualities with non-oxidizing bright creamy white flesh, suitable for fresh market and minimal processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If conventional apple varieties are used, then they have later maturity dates, but this reduces market timing advantage and freshness

Engineering Contradiction:

Improvematurity dateVSAvoidmarket timing advantage

Core Design Contradiction:

Loss of timeVSProductivity

Solution Approach 1:

The patent applies parameter changes by selectively breeding for earlier maturity date as a key parameter. Western Dawn was developed with a maturity date of late summer to early fall, significantly earlier than Lady Williams (late fall) while maintaining desirable fruit quality characteristics. This parameter change in maturity timing provides the market timing advantage without sacrificing other quality attributes.

Inventive Principle:

Principle #35Parameter changes

2Object-generated harmful factors

If apple varieties have yellow or green skin, then they blend with traditional appearances, but this reduces market differentiation and appeal

Engineering Contradiction:

Improvelack of visual differentiationVSAvoidmarket appeal

Core Design Contradiction:

Object-generated harmful factorsVSProductivity

Solution Approach 1:

The patent applies color changes by selecting for distinctive red-pink skin coloration in Western Dawn. The fruit exhibits a bright pinkish red skin color that provides strong visual differentiation from traditional yellow or green apple varieties. This color attribute enhances market appeal and consumer attraction, directly addressing the need for visual differentiation in the marketplace.

Inventive Principle:

Principle #32Color changes

3Ease of operation

If apple flesh oxidizes quickly after cutting, then processing and preparation are complicated, but this reduces ease of use and marketability

Engineering Contradiction:

Improveoxidation resistanceVSAvoidprocessing efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent applies parameter changes by selecting for low oxidation characteristics in the flesh of Western Dawn. The variety exhibits bright creamy white flesh that does not oxidize or brown quickly after cutting, a significant improvement over many traditional varieties. This parameter change in oxidation resistance simplifies preparation and processing operations while enhancing marketability for both fresh and processed applications.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP18640P2Apple tree named `Western Dawn`

Publication Date: 2008.03.25 WESTERN AUSTRALIAN AGRI AUTHORITY

AI summary

‘Western Dawn’ is a new and distinct cultivar of Malus domestica Mill. notable for its pinkish-red blush skin color, its late maturity, and its marked resistance to oxidative browning.