Hydrangea Santiago Compact Growth and Seasonal Color Traits
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Solution Overview
Problem
Current Hydrangea macrophylla subsp. serrata cultivars lack compact, well-branched growth habits and vibrant seasonal color changes, particularly in foliage and flowers, which limits their ornamental and cut flower appeal.
Innovation Solution
The development of 'Santiago', a new cultivar resulting from controlled breeding between Hydrangea macrophylla subsp. serrata 'Mont Aso' and 'Blue Wave', exhibiting compact growth, lace-cap pink flowers turning red, double sterile flowers, prolific reblooming, and dark green foliage that turns red in autumn, addressing the need for frost resistance and floriferous traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional Hydrangea macrophylla subsp. serrata cultivars are used, then they have established growth patterns, but they lack compact, well-branched growth habits and vibrant seasonal color changes
Solution Approach 1:
The patent applies parameter changes by selectively breeding plants to modify key morphological parameters including plant height, branch density, inflorescence shape, and foliage color. The breeding program specifically targeted achieving compact growth habit with increased branching density while maintaining vibrant seasonal color changes in both flowers and foliage, thereby resolving the contradiction between established growth patterns and ornamental appeal.
2Productivity
If existing cultivars are used for landscape and cut flower purposes, then they provide basic floral display, but they lack prolific reblooming and vibrant seasonal color changes in both flowers and foliage
Solution Approach 1:
The patent implements preliminary action through a systematic controlled breeding program that pre-establishes desired traits before mass propagation. The breeding process involved controlled crosses between selected parent plants, followed by rigorous selection of progeny exhibiting target characteristics including prolific reblooming and vibrant seasonal color changes. This preliminary selection and stabilization of traits in controlled conditions enables easier subsequent propagation and commercial production.
3Volume of moving object
If Hydrangea cultivars are bred for compact growth, then plant size is reduced, but branching density and overall vigor may be compromised
Solution Approach 1:
The patent applies local quality by creating non-uniform distribution of growth characteristics throughout the plant structure. Specifically, the breeding program achieved compact overall plant size through reduced internode length and controlled height, while simultaneously increasing branching density to create a fuller, more vigorous appearance. The inflorescences were bred to be flattened and compact while maintaining robust flowering capacity, thereby achieving compactness in overall volume without sacrificing local growth vigor and branching density.
Data Source
AI summary
A new cultivar of Hydrangea macrophylla subsp. serrata named ‘Santiago’ that is characterized by its compact, well-branched and rounded plant habit, its lace-cap flowers that are pink in color and turning red in color at the end of summer, its double sterile flowers, its prolific and reblooming flowering habit, its inflorescences that are present on axillary branches as well as terminal branches, its dark green foliage that turns red in autumn and resistant to sun scorch, its vigorous growth habit, and its unique combination of flowers and foliage that turn red at the end of the season.