Hydrangea Cultivar HBA215911 Early Flowering and Stem Strength

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Solution Overview

Problem

Existing Hydrangea cultivars lack desirable traits such as early and uniform flowering, large inflorescences, and strong stems, which are essential for commercial success in horticulture.

Innovation Solution

A new cultivar, Hydrangea macrophylla 'HBA215911', resulting from a controlled breeding program, exhibits upright and rounded growth habit, vigorous and rapid growth rate, freely branching with strong stems, early and uniform flowering, and large mophead-type inflorescences with red-purple sterile flowers, offering improved post-production longevity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional Hydrangea cultivars are used, then they have basic growth and flowering characteristics, but they lack early and uniform flowering, large inflorescences, and strong stems

Engineering Contradiction:
Improveflowering uniformityVSAvoidflowering time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies parameter changes by selecting and breeding plants with specific genetic traits that alter flowering time parameters. The new cultivar 'HBA215911' exhibits earlier flowering (parameter change in time) while maintaining uniform flowering across the population, resolving the contradiction between flowering uniformity and flowering time through genetic parameter optimization.

Inventive Principle:
Principle #35Parameter changes

2Area of moving object

If conventional Hydrangea cultivars are used, then they have moderate inflorescence size, but they lack large inflorescences desired for commercial success

Engineering Contradiction:
Improveinflorescence sizeVSAvoidcommercial viability
Core Design Contradiction:
Area of moving objectVSProductivity

Solution Approach 1:

The patent utilizes parameter changes by breeding for increased inflorescence size through selection of parental lines with large flower traits. The new cultivar produces significantly larger inflorescences compared to conventional cultivars, directly addressing the contradiction between inflorescence size and commercial productivity by optimizing the size parameter for market appeal.

Inventive Principle:
Principle #35Parameter changes

3Strength

If conventional Hydrangea cultivars are used, then they have average stem strength, but they lack strong sturdy stems needed for postproduction longevity

Engineering Contradiction:
Improvestem strengthVSAvoidpostproduction longevity
Core Design Contradiction:
StrengthVSDuration of action of stationary object

Solution Approach 1:

The patent applies parameter changes by selecting parental plants with strong stem characteristics and breeding these traits into the new cultivar. The resulting 'HBA215911' exhibits enhanced stem strength and structural integrity, which directly improves postproduction longevity and durability during handling and display, resolving the contradiction between stem strength and duration of action.

Inventive Principle:
Principle #35Parameter changes

4Productivity

If rapid growth is achieved, then vigorous growth habit is obtained, but it may compromise flower quality and inflorescence size

Engineering Contradiction:
Improvegrowth rateVSAvoidinflorescence size
Core Design Contradiction:
ProductivityVSArea of moving object

Solution Approach 1:

The patent resolves this contradiction through parameter changes by optimizing the balance between growth rate and inflorescence development parameters. The new cultivar exhibits both rapid vigorous growth and large inflorescence production simultaneously, achieving a favorable parameter combination that allows fast plant development while maintaining large flower size for commercial success.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUSPP29220P2<i>HYDRANGEA </i>PLANT NAMED ‘HBA215911’
Publication Date: 2018.04.10 HYDRANGEA BREEDERS ASSOC
  • USPP29220P2 patent drawing
  • USPP29220P2 patent drawing

AI summary

A new and distinct cultivar of Hydrangea plant named ‘HBA215911’, characterized by its upright and rounded plant habit; vigorous growth habit; rapid growth rate; freely branching habit with strong, thick and sturdy stems; early, freely and uniformly flowering habit; mophead-type inflorescences with numerous red purple-colored sterile flowers; and good postproduction longevity.