Hydrangea SMNHMSIGMA Compact Growth and Remontant Flowering
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Solution Overview
Problem
Current Hydrangea macrophylla cultivars lack compact, reblooming varieties with strong stems and intense, easily 'blued' flowers, which are desirable for garden performance and aesthetic appeal.
Innovation Solution
A new Hydrangea macrophylla cultivar 'SMNHMSIGMA' is developed through planned breeding, characterized by a compact, upright growth habit, strong stems, remontant flowering, and intense dark pink flowers that can be 'blued' with aluminum sulfate, offering improved stem strength and reblooming performance compared to existing varieties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional Hydrangea macrophylla cultivars are used, then they have basic flowering capability, but they lack compact growth habit, strong stems, and intense easily 'blued' flowers
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific genetic traits that result in stronger stems, more compact growth habit, and intensified flower color. The cultivar 'SMNHMSIGMA' exhibits these improved parameters through selective breeding, achieving reliable stem strength and intense coloration that respond well to aluminum sulfate treatment for blueing.
2Productivity
If conventional Hydrangea macrophylla cultivars are used, then they have basic flowering, but they lack remontant (reblooming) capability
Solution Approach 1:
The patent applies preliminary action by selecting parent plants with desirable flowering traits and conducting controlled open-pollination to produce progeny with remontant capabilities. The cultivar 'SMNHMSIGMA' was discovered in June 2011 from this controlled breeding program, exhibiting strong reblooming habit that allows extended flowering duration throughout the growing season.
3Ease of manufacture
If conventional Hydrangea macrophylla cultivars are used, then they have basic flower color, but the color intensity and ease of 'bluing' are insufficient
Solution Approach 1:
The patent applies parameter changes by breeding for genetic traits that intensify flower color and improve responsiveness to pH modification. The cultivar 'SMNHMSIGMA' exhibits intense dark pink flower color that readily turns blue with aluminum sulfate application, demonstrating both high color intensity and ease of bluing through controlled chemical interaction with anthocyanin pigments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new cultivar 'SMNHMSIGMA' exhibits stable, true-to-type asexual reproduction, stronger stems, richer flower color, and enhanced reblooming habit, providing improved garden performance and adaptability under varying environmental conditions.
Implementation Method 1
intense dark pink-colored sterile flowers that can easily 'blued' with aluminum sulfate treatments
Data Source
AI summary
A new and distinct cultivar of Hydrangea plant named ‘SMNHMSIGMA’, characterized by its compact, upright, outwardly spreading and mounding plant habit; strong and sturdy stems; remontant flowering habit; dark green-colored leaves; mophead-type inflorescences with intense deep pink-colored sterile flowers that can easily be “blued” with aluminum sulfate treatments; and good garden performance.