Remontant Hydrangea Tinkerbell Breeding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a new cultivar of Hydrangea macrophylla that exhibits a remontant blooming habit, compact plant habit, and unique flower characteristics, such as double sterile flowers with white margins, which are not found in existing cultivars like 'Frau Reiko' and 'Dancing Butterflies Improved'.
Innovation Solution
The development of the 'Tinkerbell' cultivar, a modified lace cap type Hydrangea with a remontant blooming habit, compact growth, and distinct flower features, including pink flowers with white sepal margins, achieved through controlled pollination and asexual reproduction using softwood stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a new cultivar with remontant blooming habit is developed, then blooming duration is improved, but plant complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the blooming habit through controlled pollination and selective breeding. The new cultivar 'Tinkerbell' was developed by changing the temporal parameters of blooming from single-season to multi-season (remontant), achieving extended blooming from May until frost while maintaining manageable plant complexity through stable genetic inheritance.
2Manufacturing precision
If double sterile flowers with white margins are created, then flower uniqueness is improved, but breeding complexity increases
Solution Approach 1:
The patent applies local quality by creating distinct flower characteristics specifically in the sterile flowers (double flowers with white margins) while maintaining typical Hydrangea structures elsewhere. This localized modification of flower morphology was achieved through controlled pollination between specific parents (H4-62 and H4-50), producing the unique white-margined sterile flowers that distinguish 'Tinkerbell' from other cultivars.
3Volume of moving object
If compact plant habit is achieved, then space efficiency is improved, but growth flexibility decreases
Solution Approach 1:
The patent applies parameter changes by establishing a compact plant habit as a stable genetic trait in the new cultivar. The compact growth form was achieved through selective breeding and is now a fixed characteristic that provides space efficiency while maintaining sufficient adaptability for various landscape applications and growing conditions.
4Reliability
If stable true-to-type reproduction is achieved, then reliability is improved, but propagation time increases
Solution Approach 1:
The patent applies copying by using asexual reproduction methods (softwood stem cuttings) to produce true-to-type copies of the new cultivar. This cloning approach ensures reliable reproduction of the unique traits (remontant blooming, double sterile flowers with white margins, compact habit) while significantly reducing propagation time compared to seed propagation, as cuttings can be taken and rooted relatively quickly.
Data Source
AI summary
A new cultivar of Hydrangea macrophylla named ‘Tinkerbell’, that is characterized by its remontant (re-blooming) habit, blooming from May until frost, its lacecap type inflorescences with double sterile flowers surrounding a mass of fertile flowers, its flowers that are pink in color when grown with a soil PH of 7 or above, and its sterile flowers with sepals that have white margins.