Hypericum Cultivar Ruihyh004b Breeding for Container Adaptability

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Solution Overview

Problem

Existing Hypericum cultivars lack unique berry characteristics and sufficient resistance to Melampsora hypericorum, limiting their use in landscape and container plantings.

Innovation Solution

Development of the new cultivar 'Ruihyh004b' through controlled breeding, which exhibits a compact plant habit, medium-sized green ovate berries, and tolerance to Melampsora hypericorum, achieved via asexual propagation by vegetative stem cuttings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing Hypericum cultivars are used for landscape plantings, then general growth is maintained, but unique berry characteristics and resistance to Melampsora hypericorum are lacking

Engineering Contradiction:

Improveresistance to Melampsora hypericorumVSAvoidunique berry characteristics

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The breeding program systematically varied genetic parameters through controlled crosses between different Hypericum species (H. inodorum and H. androsaemum), selecting for specific combinations of disease resistance and berry characteristics that produced the unique 'Ruihyh004b' cultivar

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The cultivar combines genetic traits from two different Hypericum species, creating a composite genetic structure that integrates both the disease resistance of H. inodorum and the distinctive berry characteristics of H. androsaemum

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If compact plant habit is selected for container growing, then suitability for container plantings is improved, but plant size and growth vigor may be reduced

Engineering Contradiction:

Improvesuitability for container growingVSAvoidplant height and spread

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The cultivar exhibits localized compactness in its overall plant architecture while maintaining adequate stem length and branching for aesthetic appeal, creating a balanced form that is compact enough for containers but retains sufficient growth for landscape impact

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If asexual propagation by vegetative stem cuttings is used, then stability of characteristics is maintained, but propagation time and effort increase

Engineering Contradiction:

Improvestability of berry characteristicsVSAvoidpropagation time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The cultivar was established through preliminary controlled breeding and selection processes that predetermined the stable characteristics, allowing subsequent asexual propagation to efficiently reproduce these pre-selected traits without requiring further selection time

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUSPP26201P2<i>Hypericum </i>plant named ‘Ruihyh004b’

Publication Date: 2015.12.08 DE GROOT HENK C A

AI summary

A new cultivar of Hypericum×inodorum, ‘Ruihyh004b’, characterized by its compact plant habit suitable for container growing, its medium sized berries that are green in color and ovate in shape, and its medium to small sized light green sepals that are ovate in shape.