Dianthus PG-072 Cascading Habit and Double Flower Traits

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Solution Overview

Problem

There is a need for new Dianthus varieties specifically suited for hanging baskets that offer unique characteristics such as prolific flowering, dark pink double flowers, and a cascading growth habit, which are not adequately met by existing cultivars.

Innovation Solution

The cultivar 'PG-072' of Dianthus caryophyllus, developed through planned breeding, exhibits prolific flowering, dark pink double flowers, and a compact, cascading growth habit suitable for hanging baskets, distinguishing it from other varieties like 'PE-58', 'F Line', and 'Whatfield Magenta'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing Dianthus cultivars are used for hanging baskets, then general flowering and growth are achieved, but prolific flowering and cascading growth habit are not obtained

Engineering Contradiction:

Improveprolific floweringVSAvoidcascading growth habit suitability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by selectively breeding for specific growth habit parameters (cascading tendency, compactness) and flowering parameters (prolificacy, double flower formation). The cultivar 'PG-072' exhibits these improved parameters through planned breeding programs that modified the plant's growth and flowering characteristics to suit hanging basket applications.

Inventive Principle:

Principle #35Parameter changes

2Shape

If existing Dianthus cultivars are used, then basic plant structure is maintained, but dark pink double flowers and compact habit are not achieved

Engineering Contradiction:

Improvecompact habitVSAvoiddouble flower production

Core Design Contradiction:

ShapeVSProductivity

Solution Approach 1:

The patent modifies the plant's morphological parameters through breeding to achieve a compact habit with reduced plant spread and height, while simultaneously increasing flower production parameters to generate double flowers. The cultivar 'PG-072' displays these changed parameters including compact growth form and prolific double flower production.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If commercial Dianthus varieties are used, then general horticultural characteristics are met, but unique cascading habit and double flowers are lacking

Engineering Contradiction:

Improvedouble flower quantityVSAvoidbreeding complexity

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent employs preliminary action through planned breeding programs conducted over multiple years (crossing in 2012, selection in 2014, propagation in 2014). The breeder performed preliminary crossing experiments and selective breeding to establish the desired traits of cascading habit and double flower production before commercial propagation, thereby achieving the unique characteristics through advance breeding efforts.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUSPP32474P2<i>Dianthus </i>plant named ‘PG-072’

Publication Date: 2020.11.17 BREIER ILAN

AI summary

A new and distinct Dianthus cultivar named ‘PG-072’ is disclosed, characterized by dark pink double flowers, prolific flowering and a cascading, compact habit. The new variety is a Dianthus, typically produced as a garden or container plant.