Blue Chip Buddleja Compact Growth Low Seed Set

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Solution Overview

Problem

There is a need for a compact, spreading Buddleja variety with blue flower color that maintains consistent characteristics across different growing conditions and has low seed set to reduce seedling formation in landscape settings.

Innovation Solution

The development of the 'Blue Chip' Buddleja cultivar, resulting from a controlled hybridization program, which exhibits a compact growth habit, multi-branched stems, gray-green leaf color, and blue flowers, propagated through softwood to semi-hardwood stem cuttings, and demonstrates low female fertility and reduced seed set.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If traditional Buddleja cultivars are grown in landscape settings, then they provide attractive flowers and fragrance, but they produce excessive seed set leading to unwanted seedling formation

Engineering Contradiction:
Improveseed setVSAvoidseedling formation
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent applies parameter changes by selectively breeding for reduced female fertility as a specific trait parameter. The 'Blue Chip' cultivar was developed through controlled hybridization to exhibit low female fertility, which directly reduces seed set and subsequent seedling formation in landscape settings, while maintaining other desirable traits like compact growth and blue flower color.

Inventive Principle:
Principle #35Parameter changes

2Shape

If Buddleja cultivars are bred for compact growth habit, then they are more suitable for landscape settings, but they may have reduced vigor and growth potential

Engineering Contradiction:
Improvegrowth habitVSAvoidvigor
Core Design Contradiction:
ShapeVSProductivity

Solution Approach 1:

The patent applies local quality by creating a cultivar with differentiated growth characteristics - compact and spreading habit at the plant level while maintaining healthy vigor for establishment and flowering. The 'Blue Chip' cultivar exhibits compact, spreading growth that is ideal for landscapes, yet maintains sufficient vigor to establish quickly and produce flowers reliably.

Inventive Principle:
Principle #3Local quality

3Shape

If Buddleja cultivars are developed with blue flower color, then they meet aesthetic requirements, but blue pigmentation may be less stable across different growing conditions

Engineering Contradiction:
Improveflower colorVSAvoidcolor consistency
Core Design Contradiction:
ShapeVSStability of the object's composition

Solution Approach 1:

The patent applies feedback through multi-location and multi-year field trials to evaluate and select for color stability. The 'Blue Chip' cultivar underwent rigorous testing across different growing conditions to confirm that its blue flower color remains consistent and reliable, providing feedback validation that the trait is stable before commercial release.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUSPP19991P3Buddleja plant named `Blue Chip`
Publication Date: 2009.05.12 NORTH CAROLINA STATE UNIV
  • USPP19991P3 patent drawing
  • USPP19991P3 patent drawing
  • USPP19991P3 patent drawing

AI summary

Buddleja ‘Blue Chip’ is a new and distinct variety of butterfly bush that has the following unique combination of desirable features that are outstanding in a new variety.1. Moderate vigor resulting in compact growth habit.2. Ease of asexual propagation using softwood or semi-hardwood cuttings.3. Spreading growth habit with multi-branched stems.4. Male sterility, and low female fertility and reduced seed set, resulting in less opportunity for seedlings to originate in the landscape setting.5. Blue flower color.