Hosta Diamond Lake Cultivar Trait Combination
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Solution Overview
Problem
The existing Hosta cultivars lack a combination of distinct traits such as large, rounded-mound habit, cordate foliage with sinuate margins, heavy glaucous bluish coloring, and compact lavender flowers on arching scapes, which are retained throughout the summer, making them less diverse in appearance and characteristics.
Innovation Solution
The development of Hosta 'Diamond Lake', a hybrid between H9-310 and H9-57, exhibiting unique traits like large, rounded-mound habit, cordate foliage with sinuate margins, glaucous bluish and whitish-blue coloring, deeply impressed veins, and compact lavender flowers on arching scapes, achieved through asexual propagation and tissue culture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Hosta cultivars are used, then they provide familiar foliage patterns, but they lack distinct combination of traits such as large rounded-mound habit, cordate foliage with sinuate margins, heavy glaucous bluish coloring, and compact lavender flowers
Solution Approach 1:
The patent combines multiple distinct traits from different parent cultivars (H9-310 and H9-57) into a single unified plant. The female parent contributed large foliage size and sinuate margins, while the male parent contributed cordate shape and glaucous bluish coloring. This merging of traits creates a new cultivar that exhibits all desired characteristics simultaneously, resolving the contradiction between trait distinctness and complexity.
Solution Approach 2:
The patent applies different trait combinations to different parts of the plant. The foliage exhibits cordate shape at the base with sinuate margins at the edges, while the coloring varies from glaucous bluish on the upper surface to glaucous whitish-blue on the lower surface. The flowers are compact and lavender-colored on arching scapes. This local differentiation of qualities creates overall distinctness without excessive complexity.
2Manufacturing precision
If asexual propagation by division is used, then the plant traits are retained accurately, but the propagation speed is slower compared to tissue culture
Solution Approach 1:
The patent employs tissue culture techniques to create copies of the parent plant through shoot-tip propagation. This method produces genetically identical clones that accurately retain all traits of the original cultivar. The tissue culture process creates multiple plantlets from a single parent, significantly increasing propagation speed compared to division while maintaining trait accuracy through controlled laboratory conditions.
3Illumination intensity
If glaucous bluish coloring is retained until end of summer, then aesthetic appearance is improved, but the color retention requires specific environmental conditions
Solution Approach 1:
The patent utilizes changes in environmental parameters, particularly light intensity and duration, to control foliage color retention. The glaucous bluish coloring is most intense during periods of lower light intensity and is retained through summer as day length decreases. This parameter-based control allows the plant to maintain aesthetic appearance without requiring artificial environmental manipulation, balancing color retention with natural environmental adaptability.
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
Hosta 'Diamond Lake' offers a distinct appearance with retained glaucous foliage color and disease tolerance, suitable for various environments, providing a new cultivar that stands out among existing Hosta varieties with improved aesthetic and growth characteristics.
Implementation Method 1
Hosta 'Diamond Lake' was hybridized at a wholesale nursery in Zeeland, Mich., USA in the summer of 2011
Implementation Method 2
Leaves with heavy glaucous bluish coloring above and glaucous whitish-blue below retained until the end of the summer
Data Source
AI summary
A new and distinct Hosta plant named ‘Diamond Lake’ with large rounded-mound habit of dense, cordate foliage of heavy glaucous bluish-colored above and whitish-blue below, retaining the glaucous covering until the end of summer; Leaves have deeply impressed veins with moderate dimpling between the veins and sinuate margins. The plant has lavender flowers densely arranged on arching bluish-colored scapes above the foliage.