Princess Time Peach Tree Low Chill Hybridization

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Solution Overview

Problem

Existing peach varieties face challenges in requiring high chilling hours, melting texture, and limited flavor profile, which affect their adaptability and market appeal.

Innovation Solution

The development of the 'Princess Time' peach tree variety, which is a first-generation cross between '1P1152' nectarine and an unnamed low chill peach, utilizing embryo rescue techniques, resulting in a tree that requires less chilling hours, produces larger, firm, and melting-textured fruit with a traditional peach flavor, and is compatible with 'Nemaguard' rootstock.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing peach varieties are used, then they produce fruit with melting texture, but they require high chilling hours which limits adaptability

Engineering Contradiction:

Improvechilling hour requirementVSAvoidfruit texture quality

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines the low chilling hour requirement trait from the pollen parent with the desirable fruit texture traits from the seed parent through controlled hybridization, creating a new variety that inherits both adaptive advantage and quality characteristics

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention changes the chilling hour parameter from high (conventional) to low (500 hours or less) while maintaining fruit texture quality, achieved through selective breeding and hybridization that modifies the physiological response to chilling

Inventive Principle:

Principle #35Parameter changes

2Productivity

If existing peach varieties are used, then they require high chilling hours, but the new variety blooms early and requires less chilling

Engineering Contradiction:

Improveblooming time and production efficiencyVSAvoidchilling hour requirement

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The variety is designed to complete its chilling requirement more quickly (500 hours or less), allowing earlier blooming and extending the productive season, which is achieved through selective breeding for reduced chilling duration

Inventive Principle:

Principle #10Preliminary action

3Reliability

If existing peach varieties are used, then they have limited flavor profile, but the new variety produces fruit with traditional peach flavor

Engineering Contradiction:

Improveflavor qualityVSAvoidmarket appeal

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent preserves the traditional peach flavor profile in the fruit flesh while allowing other characteristics (chilling requirement, size) to be modified, maintaining the essential sensory quality that defines peach flavor

Inventive Principle:

Principle #3Local quality

4Reliability

If existing peach varieties are used, then they have firm texture, but the new variety produces fruit that is both firm and melting

Engineering Contradiction:

Improvefruit textureVSAvoidfruit quality characteristics

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The invention modifies the texture parameters to achieve a dual characteristic of firmness and melting quality, likely through changes in cell wall composition and pectin content achieved through hybridization

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP19545P2Peach tree named 'Princess Time'

Publication Date: 2008.12.02 BRADFORD LOWELL GLEN

AI summary

The present invention relates to a new and distinct variety of peach tree, Prunus persica, broadly characterized by a medium size, vigorous, hardy, self-fertile, productive and regular bearing tree. The variety blooms during the early season and requires about 500 chilling hours. The fruit matures under the ecological conditions described in early June, with first picking on Jun. 1, 2007. The fruit is uniformly large in size, acidic and sweet in flavor, globose in shape, clingstone in type, firm and melting in texture, yellow in flesh color, and mostly red in skin color.