Hydrangea H213901 Cultivar Stem Strength and Inflorescence Stability

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Solution Overview

Problem

Current Hydrangea cultivars lack strong, sturdy stems and attractive, long-lasting mophead-type inflorescences with unique flower characteristics, such as dark red-purple colors and undulate margins, which are stable across varying environmental conditions.

Innovation Solution

A new cultivar, Hydrangea macrophylla 'H213901', resulting from a controlled breeding program, exhibits upright and spreading growth, vigorous branching, strong stems, and mophead-type inflorescences with dark red-purple sterile flowers, offering improved stability and aesthetics compared to parent selections and similar cultivars like 'Agrihydrazestien'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional Hydrangea cultivars are used, then they can be grown under standard conditions, but they lack strong sturdy stems and attractive long-lasting mophead-type inflorescences with unique flower characteristics

Engineering Contradiction:
Improvestem strengthVSAvoidflower characteristic stability
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent applies parameter changes by selecting and breeding plants with specific genetic parameters that result in stems of adequate length and strength, combined with inflorescences that maintain stable characteristics across varying environmental conditions. The new cultivar 'H213901' exhibits stems that are sufficiently strong to support large inflorescences while maintaining consistent flower morphology and color stability.

Inventive Principle:
Principle #35Parameter changes

2Volume of moving object

If Hydrangea cultivars with large inflorescences are selected, then aesthetic value is improved, but stem strength and structural support become insufficient

Engineering Contradiction:
Improveinflorescence sizeVSAvoidstem strength
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The breeding program identified and selected plants with optimized parameter combinations where stem length, stem strength, and inflorescence size are balanced. The new cultivar produces inflorescences that are large and aesthetically pleasing while the stems maintain adequate strength and rigidity to support the weight and size of the flower heads without bending or breaking.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If Hydrangea plants are bred for vigorous growth and branching, then productivity and flower quantity increase, but plant compactness and control become difficult

Engineering Contradiction:
Improveflower quantityVSAvoidplant compactness
Core Design Contradiction:
ProductivityVSShape

Solution Approach 1:

The patent applies parameter changes by selecting plants that exhibit vigorous growth and freely branching habits resulting in abundant flowering, while simultaneously maintaining a compact overall plant form. The new cultivar 'H213901' displays vigorous growth with multiple lateral branches producing numerous flowers, yet the plant maintains a controlled compact shape suitable for container cultivation and landscape use.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUSPP26221P2<i>Hydrangea </i>plant named ‘H213901’
Publication Date: 2015.12.15 HYDRANGEA BREEDERS ASSOC
  • USPP26221P2 patent drawing

AI summary

A new and distinct cultivar of Hydrangea plant named ‘H213901’, characterized by its upright and somewhat outwardly spreading plant habit; vigorous growth habit; freely branching habit; strong and sturdy stems; freely and uniformly flowering habit; and mophead-type inflorescences with numerous dark red purple-colored sterile flowers with undulate margins and apices.