Radiant Igloo Dendranthema Uniform Mounding and Winter Hardiness
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Solution Overview
Problem
There is a need for new perennial garden-type Dendranthema plants with uniformly mounding habit, attractive inflorescence forms, and winter hardiness, which existing varieties do not adequately provide.
Innovation Solution
The development of the 'Radiant Igloo' Dendranthema plant, resulting from a cross-pollination between Chrysanthemum×morifolium 'Frosty Yoigloo' and a proprietary selection of Chrysanthemum×morifolium, exhibiting an upright, spreading, and uniformly mounded habit, with bright yellow ray florets, good garden performance, and winter hardiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing Dendranthema varieties are used, then basic flowering function is provided, but uniform mounding habit and winter hardiness are not adequately achieved
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic parameters that confer uniform mounding habit and winter hardiness. The cross-pollination between 'Frosty Yoigloo' and selection H5537 combines genetic parameters for compact growth habit with cold tolerance, producing offspring that simultaneously achieve both uniform mounding form and winter hardiness where parent varieties failed.
2Volume of moving object
If parent varieties are compared, then existing characteristics are known, but larger size and better color retention are not achieved
Solution Approach 1:
The patent merges the desirable traits of both parent varieties through cross-pollination. Selection H5537 contributes genes for larger plant size and robust growth, while 'Frosty Yoigloo' contributes genes for color stability. The resulting hybrid combines these properties, achieving both increased volume and superior color retention that neither parent alone possesses.
Solution Approach 2:
The patent applies local quality by enhancing specific traits in different parts of the plant. The new variety exhibits improved color retention specifically in the ray florets while simultaneously achieving larger overall plant size. This localized enhancement of color stability in the flowering portions, combined with generalized size increase, demonstrates how specific qualities can be optimized independently.
Data Source
AI summary
A new and distinct cultivar of Dendranthema plant named ‘Radiant Igloo’, characterized by its upright, outwardly spreading and uniformly mounded to almost spherical plant habit; freely branching habit; dense and full plant form; uniform and freely flowering habit; decorative-type inflorescences; bright yellow-colored ray florets; natural season flowering occurs about September 14 to 24 in Pennsylvania; and good garden performance and winter hardiness.