Pumpkin Igloo Dendranthema Uniformly Mounding Habit
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Solution Overview
Problem
There is a need for new perennial garden-type Dendranthema plants with uniformly mounding plant habit, desirable inflorescence forms, attractive ray and disc floret shapes and colors, winter hardiness, and good garden performance, which existing varieties do not adequately meet.
Innovation Solution
A naturally occurring mutation of Chrysanthemum×morifolium, designated as 'Pumpkin Igloo', exhibiting upright, spreading, and uniformly mounded growth with orange bronze-colored ray florets, freely branching habit, and early flowering, demonstrating improved garden performance and winter hardiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing perennial garden-type Dendranthema varieties are used, then they provide basic flowering and plant habit, but they fail to achieve uniformly mounding plant habit, desirable inflorescence forms, attractive ray and disc floret shapes and colors, winter hardiness, and good garden performance simultaneously
Solution Approach 1:
The patent applies parameter changes by selecting for specific phenotypic traits including plant habit (uniformly mounding), inflorescence form (daisy-type with specific ray and disc floret characteristics), and flowering time (early fall). These parameter selections have resulted in a cultivar that simultaneously achieves good garden performance and winter hardiness, resolving the contradiction between adaptability and reliability.
2Shape
If mutation parent selection N0534 is used, then salmon pink-colored ray florets are produced, but the new mutation produces orange bronze-colored ray florets with improved overall characteristics
Solution Approach 1:
The patent directly applies color changes by capturing a natural mutation that changed the ray floret color from salmon pink in the parent selection N0534 to orange bronze in the new cultivar 'Pumpkin Igloo'. This color change is accompanied by improvements in other characteristics including plant habit and hardiness, demonstrating how color variation through mutation can lead to overall performance enhancement.
3Loss of time
If later flowering varieties are used, then they may have extended growing season, but early flowering (September 13-20 in Pennsylvania) provides better garden performance and winter hardiness
Solution Approach 1:
The patent applies preliminary action by selecting for early flowering time (September 13-20 in Pennsylvania), which allows the plant to complete its flowering cycle before the harshest winter conditions arrive. This early timing action enables the plant to establish itself better and demonstrates improved winter hardiness, resolving the contradiction between flowering time and reliability.
Data Source
AI summary
A new and distinct cultivar of Dendranthema plant named ‘Pumpkin 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; daisy-type inflorescences; orange bronze-colored ray florets; natural season flowering occurs about September 13 to 20 in Pennsylvania; and good garden performance and winter hardiness.