Sky Blue Rabbiteye Blueberry Cultivar Genetic Selection

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Solution Overview

Problem

Existing blueberry varieties lack a cultivar with a balanced sugar and acidity level, attractive appearance, and robust disease resistance, particularly in the rabbiteye blueberry category.

Innovation Solution

The development of the 'Sky Blue' rabbiteye blueberry variety, which is a cross between 'Centurion' and 'Rahi', offering a mid-season maturity, upright growth habit, large fruit size, medium yield, and resistance to early rust infection without defoliation, characterized by a strong bloom and medium blue color.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If existing blueberry varieties are used, then cultivation is straightforward, but they lack balanced sugar and acidity levels and attractive appearance

Engineering Contradiction:

Improvecultivation easeVSAvoidfruit quality balance

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by developing a new blueberry variety with specific genetic characteristics that result in optimized sugar-acidity balance, enhanced fruit firmness, and improved appearance traits including strong bloom and medium blue coloration, while maintaining ease of cultivation through upright growth habit and medium vigor

Inventive Principle:

Principle #35Parameter changes

2Reliability

If existing blueberry varieties are used, then they have established disease profiles, but they lack resistance to early rust infection

Engineering Contradiction:

Improvedisease resistanceVSAvoidrust infection susceptibility

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential harm of rust infection into a benefit by developing a variety that shows only early stage symptoms with no subsequent sporulation or defoliation, effectively transforming susceptibility into resistance and protecting the plant's foliage and yield

Inventive Principle:

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

3Volume of moving object

If larger fruit size is achieved, then market appeal increases, but yield quantity may be reduced

Engineering Contradiction:

Improveberry sizeVSAvoidyield

Core Design Contradiction:

Volume of moving objectVSProductivity

Solution Approach 1:

The patent resolves this contradiction by changing the genetic parameters to produce large berries (exceeding 14mm diameter) while maintaining medium yield levels through optimized plant vigor and fruit set characteristics, achieving both market appeal and productive output

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP21720P3Blueberry variety named `Sky Blue`

Publication Date: 2011.02.22 THE NEW ZEALAND INSITUTE FOR PLANT AND FOOD RESEARCH LIMITED

AI summary

A new and distinct Rabbiteye blueberry variety is described. The variety results from selection among a population of seedlings derived from crossing the blueberry varieties known as ‘Centurion’ (not patented) and ‘Rahi’ (not patented). The fruit of this new variety is large and firm, with an attractive appearance characterized by good bloom; fruit has an outstanding quality with good balance between sugar and acidity. Plant is upright with medium to good vigor and medium yield. The new variety has been named ‘Sky Blue’.