Coleus UF15-6-28 Heat Tolerance and Color Stability
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Solution Overview
Problem
Existing Coleus cultivars lack heat tolerance and consistent foliage coloration, especially under varying sun and shade conditions, and do not exhibit the unique lance-shaped leaves with crimson and chartreuse patterns and robust growth habits as seen in 'UF15-6-28'.
Innovation Solution
The cultivar 'UF15-6-28' displays excellent heat tolerance and retains distinct crimson and chartreuse coloration patterns on lance-shaped leaves, with a vigorous, compact growth habit and superior lateral branching, achieved through asexual propagation using meristem tip cuttings, distinguishing it from its parent and other similar cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If Coleus cultivars are grown in full sun to enhance color intensity, then the red coloration becomes more intense, but the chartreuse coloration fades and is lost
Solution Approach 1:
The cultivar 'UF15-6-28' exhibits altered physiological parameters in its foliage pigmentation system, maintaining the ability to produce both crimson and chartreuse colorations simultaneously under full sun conditions. This represents a change in the plant's photosynthetic and pigment synthesis parameters, allowing it to resist the typical fading of chartreuse colors that occurs in other Coleus cultivars when exposed to intense sunlight.
2Temperature
If Coleus cultivars are bred for heat tolerance, then they can withstand higher temperatures, but they may lose foliage color stability and vibrancy
Solution Approach 1:
The cultivar 'UF15-6-28' demonstrates changed thermal and pigment stability parameters, allowing it to maintain vibrant crimson and chartreuse foliage coloration at temperatures where other Coleus cultivars would experience color fading or loss. The plant's physiological parameters for pigment protection and heat resistance have been altered through its unique genetic background involving cross-species hybridization.
3Adaptability or versatility
If Coleus cultivars are propagated sexually to introduce genetic variation, then new color patterns may emerge, but the distinctive features and true-to-type characteristics are not retained
Solution Approach 1:
The cultivar 'UF15-6-28' is propagated asexually through stem cuttings, creating genetic copies that precisely replicate the parent plant's distinctive crimson and chartreuse coloration pattern, lance-shaped leaves, and growth habit. This copying method ensures that the unique characteristics developed through the complex hybridization process are faithfully reproduced in all subsequent generations without genetic variation.
4Productivity
If Coleus cultivars are bred for vigorous growth habit, then they produce more propagules and cover more area, but they may lose compact mounded form and lateral branching characteristics
Solution Approach 1:
The cultivar 'UF15-6-28' exhibits changed morphological parameters that allow it to maintain a compact, well-branched, mounded growth habit even as it produces vigorous lateral branching and abundant propagules. The plant's architectural parameters have been altered to achieve a balance between compact form and high propagule production, with dense lateral branching occurring within a confined vertical space.
Data Source
AI summary
‘UF15-6-28’ is a new Coleus plant with novel characteristics that include excellent heat tolerance, distinct, lance-shaped leaves that display a unique and consistent crimson and chartreuse coloration pattern, and a vigorous, compact mounded growth habit with excellent lateral branching. ‘UF15-6-28’ exhibits superior foliage color stability when grown under all conditions, including both sun and shade conditions. Further, ‘UF15-6-28’ exhibits long-season performance until late fall.