Agave 'Blue Ivory' Variegated Leaf Margin Segmentation
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Solution Overview
Problem
There is a lack of a distinct Agave plant with unique characteristics such as long, variegated, slightly-folded leaves with wide creamy-white margins and contrasting bluish-green centers, and a mounded habit, which are not found in existing Agave cultivars like 'Ivory Curls' and 'Lover Boy'.
Innovation Solution
The development of Agave 'Blue Ivory', a sport of 'Ivory Curls', characterized by long, variegated, slightly-folded leaves with marginal teeth, wide creamy-white margins, bluish-green centers, and a mounded habit, achieved through offset division propagation and tissue culture, maintaining stability and identity in propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If Agave 'Ivory Curls' is used as the parent cultivar, then the plant has creamy-white margins and bluish-green centers, but the marginal teeth are darker and more folding and reflex curling in the distal portion of the leaves
Solution Approach 1:
The patent identifies and isolates a specific sport mutation from the parent cultivar 'Ivory Curls'. This sport represents a segmented deviation from the parent's traits, specifically in the leaf margin characteristics. The sport has wider, cleaner creamy-white margins without the dark, folding, reflex curling teeth found in the parent, thus resolving the contradiction by separating the desirable margin width from the undesirable tooth characteristics.
Solution Approach 2:
The sport mutation exhibits local quality changes in the leaf margin region. Specifically, the marginal teeth in the sport are lighter in color and less folded/reflexed compared to the parent cultivar. This localized improvement in the margin quality while maintaining the overall plant structure resolves the contradiction between achieving clean, wide margins and maintaining stable, predictable traits.
2Reliability
If Agave 'Blue Ivory' is propagated through offset division, then stable and identical plants are produced, but the propagation process requires time and resources
Solution Approach 1:
The patent establishes offset division as the predetermined propagation method for Agave 'Blue Ivory'. By pre-establishing this propagation protocol, the inventor ensures that future propagation efforts will consistently produce stable, identical plants. This preliminary action resolves the contradiction by setting up a reliable system that, while requiring time, guarantees trait stability and eliminates the need for repeated trial-and-error propagation attempts.
3Adaptability or versatility
If Agave 'Blue Ivory' is grown in containers, then it is suitable for ornamental use with moderate to slow growth rate, but the plant size is limited
Solution Approach 1:
The patent describes Agave 'Blue Ivory' as having a moderate to slow growth rate, which is a parameter change that makes the plant suitable for container cultivation. This growth rate modification allows the plant to thrive in confined spaces without becoming overly large, thus resolving the contradiction between adaptability to containers and plant size limitations. The slow growth rate becomes a beneficial trait rather than a constraint.
Data Source
AI summary
A new and unique Agave plant named ‘Blue Ivory’ characterized by low mounded plant habit of long, linear, slightly-folded, distally-reflexed, variegated leaves having wide creamy-white margins with bluish-green centers and light bluish-green blush in the intermediate region. The leaves have firm, sharp medium-sized marginal and small apical spines and show occasional imprints from marginal spies of leaves above or below. The plant is useful in the landscape as a specimen, en masse, or also in a container in the home or landscape.