Hydrangea Cultivar SCHROLL 116-09-01a Breeding for Compact Habit and Strong Stems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Hydrangea macrophylla cultivars lack strong stems, uniformity, early flowering, and extended shelf-life, as well as optimal root systems and flower coloration, which are desirable traits for container-type plants.
Innovation Solution
The development of the new Hydrangea macrophylla cultivar 'SCHROLL116-09-01a' through controlled cross-pollination, exhibiting compact growth, strong stems, early flowering, long-lasting light pink flowers, and robust root systems, achieved through asexual reproduction by softwood cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional Hydrangea macrophylla cultivars are used, then they have basic growth and flowering capabilities, but they lack strong stems, uniformity, early flowering, extended shelf-life, and optimal root systems
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific genetic traits that modify plant characteristics. The new cultivar 'SCHROLL116-09-01a' exhibits changed parameters including stronger stem structure, more uniform growth habit, earlier flowering response, extended postproduction longevity, and improved root system architecture compared to parent selections and conventional cultivars.
Solution Approach 2:
The breeding program employed preliminary action through controlled cross-pollination between selected parent plants (code 68-00 as female parent and code 04-00 as male parent) to pre-establish desired traits before commercial propagation. The asexual reproduction by softwood cuttings since 2014 has maintained and stabilized these improved characteristics in successive generations.
2Loss of time
If existing cultivars are used, then they have average flowering time and shelf-life, but the new cultivar achieves early flowering and extended postproduction longevity
Solution Approach 1:
The new cultivar demonstrates parameter changes in temporal characteristics: flowering begins earlier in the season compared to parent selections and comparable cultivars like 'H213901' and 'H213906', and postproduction longevity (shelf-life) is extended. These temporal parameter improvements are maintained alongside reliable flower quality with light pink-colored sterile flowers and strong plant structure.
3Shape
If compact growth habit is achieved, then container suitability is improved, but plant vigor may be reduced
Solution Approach 1:
The patent applies local quality by creating a balanced plant architecture where different parts exhibit optimized characteristics. The plant has a compact, upright, mounded habit suitable for containers, while simultaneously maintaining moderately vigorous growth, strong stems, and a robust root system. This local optimization of different plant regions resolves the contradiction between compactness and vigor.
4Ease of manufacture
If sterile flower color is light pink, then aesthetic appeal is enhanced, but it differs from the darker pink of parent selections
Solution Approach 1:
The breeding program achieved parameter change in flower color, producing light pink-colored sterile flowers that differ from the darker pink of both parent selections (code 68-00 and code 04-00). This color parameter change is stable and reproduces true to type through asexual reproduction by softwood cuttings, demonstrating consistent inheritance of the new color characteristic.
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘SCHROLL116-09-01a’, characterized by its compact, upright and mounded plant habit; moderately vigorous growth habit; freely branching habit and strong stems; large mophead-type inflorescences with light pink-colored sterile flowers that are initially greenish white in color during early development; long flowering period; and strong root system.