Warm Yoigloo Chrysanthemum Cultivar Breeding for Consistent Garden Performance
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Solution Overview
Problem
Current perennial garden Chrysanthemum cultivars lack desirable inflorescence forms, attractive floret colors, and consistent garden performance, particularly in varying environmental conditions.
Innovation Solution
The development of the new Chrysanthemum cultivar 'Warm Yoigloo' through cross-pollination of a proprietary seedling selection and the Mei Kyo cultivar, exhibiting unique traits such as upright and spreading growth, dense flowering, orange bronze-colored ray florets, and improved flowering timing and inflorescence size, which are stable through asexual reproduction by vegetative cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current perennial garden Chrysanthemum cultivars are used, then they are available for gardening, but they lack desirable inflorescence forms, attractive floret colors, and consistent garden performance
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific morphological parameters including inflorescence diameter (4.0-4.5 cm), ray floret dimensions (1.5-2.0 cm length, 3.0-4.0 mm width), and color characteristics (orange bronze in RHS 172D-174D). These parameter specifications create cultivars with consistent, desirable forms and colors that meet garden performance requirements
2Shape
If Chrysanthemum cultivars are bred for attractive colors and forms, then aesthetic quality improves, but stability of these traits across generations and environmental conditions may be compromised
Solution Approach 1:
The patent applies preliminary action through extensive preliminary breeding and selection work conducted over multiple years (cross-pollination in 2000, selection in 2001, propagation in 2002). The cultivar underwent rigorous testing for trait stability across generations via asexual reproduction by vegetative cuttings, ensuring that desirable inflorescence forms and colors are genetically fixed and will be reproduced true to type in successive generations
Solution Approach 2:
The patent applies copying through asexual reproduction by vegetative cuttings to produce genetically identical copies of the selected plant. This cloning method ensures that the unique combination of inflorescence form, orange bronze color, and growth habits is exactly replicated in all propagated plants, guaranteeing trait stability across large numbers of plants
3Loss of time
If Chrysanthemum cultivars are developed for early flowering, then market timing improves, but inflorescence size and development may be compromised
Solution Approach 1:
The patent applies parameter changes by optimizing the flowering time parameter while maintaining inflorescence size parameters. The new cultivar flowers approximately 10-14 days earlier than the female parent selection and one month earlier than the male parent cultivar Mei Kyo, yet produces inflorescences that are larger than both parents (4.0-4.5 cm diameter compared to smaller parental inflorescences). This demonstrates successful decoupling of flowering time and inflorescence size parameters
Data Source
AI summary
A new and distinct cultivar of Chrysanthemum plant named ‘Warm Yoigloo’, characterized by its upright, outwardly spreading and mounding plant habit; freely branching habit; dense and full plant habit; uniform and freely flowering habit; duplex-type inflorescences with obovate-shaped ray florets; orange bronze-colored ray florets; and natural season flowering about September 17th in the Northern Hemisphere.