Viola Sunviopoki Cultivar Breeding for Trailing Habit and Bi-colored Flowers

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Solution Overview

Problem

There is a need for new trailing and freely branching Viola cultivars with unique and attractive flower coloration that can reproduce stably and true to type, as existing cultivars lack these specific traits.

Innovation Solution

A new Viola cultivar, 'Sunviopoki', was developed through cross-pollination of proprietary selections of Viola cornuta, exhibiting a trailing and mounding habit, freely branching and flowering, with blue and yellow bi-colored flowers, and larger flowers compared to the male parent, and smaller flowers compared to the female parent.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cross-pollination is performed to create new Viola cultivars with unique flower coloration, then flower color diversity is improved, but stability of reproduction and true-to-type characteristics deteriorate

Engineering Contradiction:

Improveflower color diversityVSAvoidstability of reproduction

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies parameter changes by systematically varying breeding parameters including selecting specific parental combinations with complementary traits, controlling pollination timing, and selecting offspring with optimal combinations of flower color intensity and pattern. This resolves the contradiction by finding the right parameter settings that achieve both color diversity and reproductive stability.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If selection focuses on unique and attractive flower coloration, then flower color quality is improved, but plant habit characteristics such as trailing and branching may deteriorate

Engineering Contradiction:

Improveflower color qualityVSAvoidplant habit

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The patent applies local quality by making different parts of the breeding selection process focus on different traits: parental selection emphasizes flower color characteristics, while offspring selection evaluates both color quality and plant habit. This allows unique flower coloration to be improved in specific areas without compromising overall plant habit, as different selections can be made for different local characteristics.

Inventive Principle:

Principle #3Local quality

3Reliability

If asexual reproduction by vegetative cuttings is used to maintain stability, then reproduction stability is improved, but time for propagation and establishment deteriorates

Engineering Contradiction:

Improvereproduction stabilityVSAvoidpropagation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by preparing propagation materials and optimizing cutting conditions in advance. Vegetative cuttings are taken at optimal times when plants are actively growing, and cutting protocols are pre-established to minimize establishment time. This allows reproduction stability to be maintained through asexual propagation while reducing the time loss associated with propagation and establishment.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUSPP21332P2Viola plant named Sunviopoki

Publication Date: 2010.09.28 SUNTORY FLOWERS

AI summary

A new and distinct cultivar of Viola plant named ‘Sunviopoki’, characterized by its trailing and mounding plant habit; freely branching habit; freely flowering habit; and blue and yellow bi-colored flowers.