Heuchera 'TNHEULS' Sun Tolerance and Leaf Thickness
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Solution Overview
Problem
Existing Heuchera cultivars with yellow to lime foliage lack sufficient sun tolerance, have thinner leaves, and smaller flowers, limiting their performance in sunny conditions.
Innovation Solution
The development of Heuchera 'TNHEULS' (Lemon Supreme™), a new cultivar resulting from a controlled cross, which exhibits improved sun tolerance, thicker leaves, larger white flowers, and a medium-small mounding habit, achieved through asexual propagation using tip cuttings and micropropagation techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing yellow foliage Heuchera cultivars are used, then they provide lime-green to yellow leaf color, but they lack sun tolerance and have thin leaves
Solution Approach 1:
The patent applies parameter changes by developing a new cultivar with modified genetic parameters that simultaneously improve sun tolerance and increase leaf thickness. The breeding process selected for plants with thicker leaves (improved structural parameter) and enhanced sun tolerance (improved environmental resistance parameter), resolving the contradiction between these two previously opposing characteristics in yellow foliage Heuchera cultivars.
2Quantity of substance
If existing yellow foliage Heuchera cultivars are used, then they provide lime-green to yellow leaf color, but they have small flowers
Solution Approach 1:
The patent applies parameter changes by breeding a cultivar with modified genetic parameters that simultaneously increase flower size and improve sun tolerance. The selected plants exhibit both larger flowers (improved reproductive parameter) and enhanced sun tolerance (improved environmental resistance parameter), resolving the contradiction between these two previously opposing characteristics.
3Object-affected harmful factors
If existing yellow foliage Heuchera cultivars are used, then they provide lime-green to yellow leaf color, but they have poor sun tolerance overall
Solution Approach 1:
The patent applies parameter changes by developing a cultivar with genetically stabilized parameters for sun tolerance. The new cultivar 'Lemon Supreme' exhibits consistent performance in sunny conditions across different environments, with reliable sun tolerance and performance consistency, resolving the contradiction between achieving sun tolerance and maintaining reliable consistent performance.
Data Source
AI summary
A new and distinct Heuchera plant characterized by better sun tolerance compared to other known yellow foliage cultivars, white flowers on medium short spikes, full crown of lime-green spring leaves that turn to yellow in the sun, medium-small mounding habit, and excellent vigor.