Petunia Duegppur Cultivar Breeding for Compact Growth and Large Flower Size

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Solution Overview

Problem

There is a need for new Petunia cultivars with unique and attractive flower characteristics, such as compact semi-upright to trailing growth habit, early and continuous flowering, and large red-purple flowers with dark venation, which are not adequately met by existing Petunia varieties.

Innovation Solution

A new Petunia×hybrida cultivar 'Duegppur' is developed through controlled breeding, combining traits from proprietary selections T04-0067-7 and T07-0519-001, exhibiting a compact, freely branching, and early flowering habit with larger flowers and distinct venation, and showing stability through asexual reproduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing Petunia varieties are used, then general flowering habits are achieved, but unique and attractive flower characteristics such as compact semi-upright to trailing growth habit, early continuous flowering, and large red-purple flowers with dark venation are not met

Engineering Contradiction:

Improvegrowth habitVSAvoidbreeding complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple desirable traits from different parent plants into a single cultivar 'Duegppur'. The female parent T04-0067-7 contributed compact growth habit and early flowering, while the male parent T07-0519-001 contributed large flower size and red-purple coloration with dark venation. This merging of traits from separate lines resolves the contradiction by achieving unique characteristics that neither parent possessed alone.

Inventive Principle:

Principle #5Merging (Combining)

2Area of moving object

If larger flowers are developed, then flower size increases, but plant compactness may be compromised

Engineering Contradiction:

Improveflower sizeVSAvoidplant compactness

Core Design Contradiction:

Area of moving objectVSShape

Solution Approach 1:

The cultivar 'Duegppur' exhibits local quality by having large flowers (7-8 cm diameter) concentrated at the terminal ends of compact, trailing stems. The plant maintains overall compact dimensions (30-40 cm height) while producing disproportionately large flowers at key locations, resolving the contradiction between flower size and plant compactness through spatial differentiation.

Inventive Principle:

Principle #3Local quality

3Loss of time

If early flowering is achieved, then time to first flower decreases, but flower longevity or continuous flowering may be reduced

Engineering Contradiction:

Improvetime to first flowerVSAvoidflowering duration

Core Design Contradiction:

Loss of timeVSDuration of action of stationary object

Solution Approach 1:

The cultivar 'Duegppur' achieves continuous flowering from early spring until frost through regular pinching and deadheading practices. The plant flowers continuously without interruption, producing new blooms repeatedly over an extended period. This continuity resolves the contradiction by maintaining both early flowering onset and prolonged flowering duration through consistent cultural management.

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUSPP23948P2Petunia plant named `Duegppur`

Publication Date: 2013.10.01 DUEMMEN GROUP BV

AI summary

A new and distinct cultivar of Petunia plant named ‘Duegppur’, characterized by its compact, semi-upright to trailing and mounding plant habit; freely branching habit; early and freely flowering habit; large red purple-colored flowers with dark purple-colored venation; and good garden performance.