Pearlicious X Nectarine Hybridization for Early Maturity

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Solution Overview

Problem

There is a need for a new variety of nectarine tree that combines early blooming, self-fertility, and specific fruit characteristics such as globose shape, clingstone type, and improved flavor profile, while being adaptable to varying climatic conditions and suitable for commercial orchards.

Innovation Solution

The 'Pearlicious X' nectarine variety is developed through a first-generation cross between 'Snow Princess' peach and an unnamed nectarine, exhibiting early blooming, self-fertility, and distinct fruit traits like globose leaf glands, clingstone fruit, and improved sweetness and acidity, with a chilling requirement of about 450 hours, making it suitable for central California conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If early blooming is selected in nectarine variety development, then the fruit matures earlier, but the chilling hour requirement increases

Engineering Contradiction:

Improvetime to maturityVSAvoidchilling hour requirement

Core Design Contradiction:

Loss of timeVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by selecting specific genetic traits from parent varieties that alter the chilling hour requirement parameter. The 'Pearlicious X' variety was developed through controlled hybridization to achieve a specific chilling hour range (400-500 hours) while maintaining early maturity, representing a deliberate change in the physiological parameters of the fruit variety

Inventive Principle:

Principle #35Parameter changes

2Reliability

If self-fertility is selected in nectarine variety development, then pollination reliability improves, but genetic diversity decreases

Engineering Contradiction:

Improvepollination reliabilityVSAvoidgenetic diversity

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies self-service by developing a self-fertile nectarine variety that can pollinate and set fruit without requiring external pollinators. The 'Pearlicious X' variety possesses self-compatibility traits that allow it to fertilize itself, ensuring reliable fruit production even in the absence of adequate pollinator populations or cross-pollination opportunities

Inventive Principle:

Principle #25Self-service

3Strength

If clingstone fruit type is selected, then shipping quality improves, but processing versatility decreases

Engineering Contradiction:

Improvefruit firmnessVSAvoidprocessing use

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by selecting for the clingstone trait specifically in the fruit flesh-stone attachment region while maintaining overall fruit quality. The 'Pearlicious X' variety exhibits clingstone characteristics where the flesh adheres strongly to the pit, providing firmness and structural integrity that enhances shipping quality and reduces bruising, while the rest of the fruit maintains desirable eating qualities

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20160174436P1Nectarine tree named 'pearlicious x'

Publication Date: 2016.06.16 BRADFORD LOWELL GLEN

AI summary

The present invention relates to a new and distinct variety of nectarine tree, Prunus persica, broadly characterized by a medium size, vigorous, hardy, self-fertile, productive and regular bearing tree. The variety blooms somewhat early and requires about 450 chilling hours. The fruit matures under the ecological conditions described in July, with first picking on Jul. 12, 2014. The fruit is medium to large in size, a tasty balance of acid and sugar in flavor, globose in shape, clingstone in type, very firm and crisp in texture, yellowish white in flesh color, and deep red in skin color.