Phlox PPPHL07201 Hybrid Combining Vigor and Mildew Resistance

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Solution Overview

Problem

Existing Phlox cultivars lack vigor, prolonged flowering periods, and resistance to powdery mildew, with limited environmental adaptability and flower color variation.

Innovation Solution

The cultivar 'PPPHL07201' combines vigorous growth, early and extended flowering, and resistance to powdery mildew, characterized by light violet-blue flowers with a dark eye, resulting from a cross between Phlox subulata and Phlox stolonifera, exhibiting stability across generations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If existing Phlox subulata varieties are used, then flower color and basic growth are maintained, but vigor is insufficient and flowering period is limited to spring

Engineering Contradiction:

Improveflowering periodVSAvoidvigor

Core Design Contradiction:

Duration of action of moving objectVSProductivity

Solution Approach 1:

The patent combines the traits of Phlox subulata (flower color, compact growth) with Phlox stolonifera (vigor, extended flowering period) through crossbreeding, creating a hybrid cultivar that exhibits both prolonged flowering from spring through summer and enhanced vigor compared to either parent alone

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If Phlox stolonifera is used as pollen parent, then vigor and flowering period are improved, but flower color changes from purple-pink to light blue

Engineering Contradiction:

ImprovevigorVSAvoidflower color

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

The hybrid cultivar exhibits local quality differentiation where the flower color (violet-blue with dark eye) and foliage characteristics are influenced by Phlox subulata, while the vigorous growth habit and extended flowering period are influenced by Phlox stolonifera, allowing each parent's advantageous traits to be expressed in specific aspects

Inventive Principle:

Principle #3Local quality

3Shape

If commercial varieties like Oakington Blue Eyes are used, then flower color and growth habit are maintained, but disease resistance is insufficient

Engineering Contradiction:

Improvegrowth habitVSAvoiddisease resistance

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

The cultivar demonstrates resistance to powdery mildew, converting a potential harmful factor (disease susceptibility) into a beneficial trait that improves reliability and reduces the need for chemical interventions, while maintaining the desirable mounding growth habit

Inventive Principle:

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

Data Source

PatentUSPP23705P2Phlox plant named `PPPHL07201`

Publication Date: 2013.07.02 PLANT 21

AI summary

A new and distinct Phlox cultivar named ‘PPPHL07201’ is disclosed, characterized by vigorous plant growth and early flowering, with blooms produced over a long period of time. Plants have a good resistance to powdery mildew and produce violet-blue flowers with a dark eye. The new variety is a Phlox, normally produced as an outdoor ornamental plant for containers or gardens.