Aster Plant Yodays Mounded Habit and Fade-Resistant Violet Blue Florets

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Solution Overview

Problem

Existing Aster cultivars lack uniform and rounded plant growth habits, strong branching, and desirable ray floret colors, which are essential for improved garden performance and aesthetic appeal in potted plants.

Innovation Solution

A new cultivar, 'Yodays', is developed through open-pollination, characterized by an upright, mounded, and freely branching growth habit with violet blue-colored ray florets that resist fading, offering improved vigor and garden performance compared to existing cultivars like 'Yoballad' and 'Odin Viking'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If existing Aster cultivars are used, then they have basic flowering capability, but they lack uniform and rounded plant growth habits and strong branching

Engineering Contradiction:

Improveplant growth habitVSAvoidgarden performance

Core Design Contradiction:

ShapeVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by selecting and breeding for specific growth habit parameters (upright, mounded, compact form) and branching characteristics. The new cultivar 'Yodays' exhibits a uniform, rounded plant habit with strong lateral branching, representing optimized morphological parameters that resolve the contradiction between shape uniformity and garden performance.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If existing Aster cultivars are used, then they have basic inflorescence production, but they lack desirable and unique ray floret color with fade resistance

Engineering Contradiction:

Improveaesthetic appealVSAvoidcolor vibrancy duration

Core Design Contradiction:

Ease of manufactureVSDuration of action of stationary object

Solution Approach 1:

The patent applies color changes by developing a cultivar with distinctive violet-blue ray florets that maintain their color intensity throughout the flowering period. The new cultivar 'Yodays' displays unique violet-blue colored ray florets with excellent fade resistance, resolving the contradiction between aesthetic appeal and color durability.

Inventive Principle:

Principle #32Color changes

3Productivity

If existing Aster cultivars are used, then they have average vigor, but they lack numerous inflorescences and uniform flowering

Engineering Contradiction:

Improveinflorescence quantityVSAvoidflowering uniformity

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action through controlled open-pollination breeding and selective propagation methods. The cultivar was developed through deliberate breeding programs that pre-established uniform flowering characteristics and high inflorescence production capacity, which are then consistently reproduced through vegetative propagation, resolving the contradiction between productivity and flowering uniformity.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUSPP20288P2Aster Plant Named `Yodays`

Publication Date: 2009.09.08 SYNGENTA CROP PROTECITON AG

AI summary

A new and distinct cultivar of Aster plant named ‘Yodays’, characterized by its upright, uniform and mounded plant habit; freely branching growth habit; dark green-colored foliage; uniform and freely flowering habit; natural flowering season mid-September in the northern hemisphere; daisy-type inflorescences with violet blue-colored ray florets that resist fading over time; and good garden performance.