Thuja Anniek Cultivar Compact Form and Winter Hardiness
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Solution Overview
Problem
There is a need for a distinct cultivar of Thuja occidentalis that exhibits a compact, freely branching, and dense growth habit with unique leaf color changes and improved winter hardiness, as existing cultivars like 'Teddy' and 'Tiny Tim' lack these specific traits.
Innovation Solution
A new cultivar, 'Anniek', derived from a naturally occurring branch mutation of Thuja occidentalis 'Teddy', characterized by a compact globular form, soft leaves, and distinct leaf color changes from yellow-green to bronze, achieved through asexual reproduction by hardwood cuttings, demonstrating stability and true-to-type reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a Thuja cultivar exhibits a compact, dense growth habit, then it maintains a globular form and resists falling apart, but it may lack unique leaf color changes and winter hardiness
Solution Approach 1:
The patent applies local quality by selecting for specific localized traits in the Thuja plant: the bronze leaf coloration appears specifically on developing leaves during autumn and winter, while the compact globular form is maintained throughout the plant structure. This selective breeding for localized characteristics (bronze leaf color in specific seasons, compact form) resolves the contradiction by achieving both the desired shape and the adaptive leaf color changes without compromising winter hardiness.
2Adaptability or versatility
If a Thuja cultivar is derived from natural mutation, then it exhibits unique characteristics, but it requires verification of stability through asexual reproduction
Solution Approach 1:
The patent applies self-service through asexual reproduction by hardwood cuttings, where the plant propagates itself to maintain and verify the stability of its unique traits. The cutting process allows the plant to reproduce true-to-type, demonstrating that the bronze leaf color and compact form are genetically stable and will be reliably passed to subsequent generations without requiring external intervention or complex testing protocols.
Data Source
AI summary
A new and distinct cultivar of Thuja plant named ‘Anniek’ characterized by its compact plant habit and globular plant form; freely branching habit; dense and bushy form; leaves that are soft to the touch; developing leaves are yellow green in color in the spring and summer becoming bronze in color in the autumn and winter; and good winter hardiness.