Hibiscus Juno Cultivar Flower Longevity and Uniformity

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Solution Overview

Problem

Existing Hibiscus rosa-sinensis cultivars lack durable and long-lasting flowers with attractive, uniform flowering habits and varying environmental responses.

Innovation Solution

The development of the 'Juno' cultivar through cross-pollination of proprietary Hibiscus rosa-sinensis selections, resulting in a plant with an upright, densely branching habit, glossy dark green leaves, and dark red, imbricate flowers with excellent longevity, differing from parent cultivars in flower color and shape and outlasting comparable cultivars like 'Adonis' and 'Boreas'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If existing Hibiscus rosa-sinensis cultivars are used, then they have basic flowering characteristics, but they lack durable and long-lasting flowers with attractive uniform flowering habits

Engineering Contradiction:

Improveflower longevityVSAvoiduniform flowering habit

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The patent applies parameter changes by selectively breeding for specific genetic traits that control flower longevity and flowering uniformity. The 'Juno' cultivar exhibits extended flower duration (2-5 days longer than parent cultivars) and uniform continuous flowering habit through genetic selection and cross-pollination breeding program conducted in Sabro, Denmark

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent inverts the conventional approach by focusing on extending flower duration rather than just increasing flower production. The 'Juno' cultivar achieves 2-5 days longer flower longevity compared to parent cultivars GB-2006-1386 and GB-2006-5025, while simultaneously maintaining uniform flowering habits

Inventive Principle:

Principle #13The other way round (Inversion)

2Stability of the object's composition

If existing Hibiscus rosa-sinensis cultivars are used, then they have varying environmental responses, but they lack stable true-to-type traits

Engineering Contradiction:

Improvetrait stabilityVSAvoidenvironmental response

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent applies preliminary action through a controlled breeding program conducted before commercial release. Cross-pollination was performed in October 2007, progeny were selected in August 2008, and vegetative propagation was established by October 2008 to ensure trait stability before market introduction

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses vegetative propagation (cutting propagation) to create genetically identical copies of the selected 'Juno' plant. This ensures true-to-type reproduction of stable traits including dark red-purple flower color, imbricate petal arrangement, and uniform flowering habits across multiple generations

Inventive Principle:

Principle #26Copying

Data Source

PatentUSPP25236P2<i>Hibiscus </i>plant named ‘Juno’

Publication Date: 2015.01.20 GRAFF BREEDING

AI summary

A new and distinct cultivar of Hibiscus plant named ‘Juno’, characterized by its upright, mounding and uniform plant habit; freely branching habit; dense and bushy appearance; glossy dark green-colored leaves; uniformly, freely and continuous flowering habit; dark red-colored flower buds; single flowers with imbricate red purple-colored petals and dark red-colored centers; and excellent flower longevity.