Hydrangea H211908 Breeding Strong Stems Large Inflorescences

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Solution Overview

Problem

Current Hydrangea cultivars lack strong and sturdy stems, large inflorescences, and attractive flower color with good post-production longevity, which are essential for creating visually appealing and durable mophead-type Hydrangea plants.

Innovation Solution

A new cultivar of Hydrangea macrophylla, 'H211908', was developed through cross-pollination, exhibiting upright and spreading growth habit, vigorous growth, strong stems, and large white-colored sterile inflorescences, outperforming existing cultivars like 'Agrihydranegen' in vigor, leaf size, and inflorescence size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional Hydrangea cultivars are used, then basic flowering is achieved, but the stems are weak and inflorescences are small

Engineering Contradiction:
Improvestem strengthVSAvoidpostproduction longevity
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent applies parameter changes by selectively breeding for specific genetic traits that alter stem strength, inflorescence size, and flower longevity. The new cultivar 'H211908' exhibits significantly stronger stems and larger inflorescences compared to conventional cultivars, demonstrating improved mechanical properties and postproduction durability through genetic parameter optimization.

Inventive Principle:
Principle #35Parameter changes

2Volume of moving object

If larger inflorescences are developed, then aesthetic appeal is improved, but plant vigor and growth stability may be compromised

Engineering Contradiction:
Improveinflorescence sizeVSAvoidgrowth stability
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The patent employs preliminary action through controlled cross-pollination and selective breeding programs that pre-establish the genetic foundation for large inflorescences combined with vigorous growth. The new cultivar 'H211908' was developed through systematic breeding to simultaneously achieve large flower heads and stable vigorous growth habits, preventing the trade-off between size and stability.

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If white-colored sterile flowers are produced, then aesthetic appeal is enhanced, but genetic diversity and adaptability may be reduced

Engineering Contradiction:
Improveaesthetic appealVSAvoidgenetic adaptability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by focusing the breeding program on specific local traits - white-colored sterile flowers with particular aesthetic characteristics - while maintaining overall genetic health and adaptability through controlled cross-pollination. The new cultivar 'H211908' exhibits the desired white flower color and aesthetic qualities without sacrificing genetic versatility, as evidenced by its successful propagation and adaptation to different growing conditions.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUSPP25410P2<i>Hydrangea </i>plant named ‘H211908’
Publication Date: 2015.04.07 HYDRANGEA BREEDERS ASSOC
  • USPP25410P2 patent drawing

AI summary

A new and distinct cultivar of Hydrangea plant named ‘H211908’, characterized by its upright and somewhat outwardly spreading plant habit; vigorous growth habit; strong and sturdy stems; freely flowering habit; and large inflorescences with numerous white-colored sterile flowers.