Buxus HER2009B01 cultivar box blight resistance

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Solution Overview

Problem

Existing Buxus cultivars lack sufficient resistance to Calonectria pseudonaviculata (box blight) and have unsuitable growth habits for low hedges and historical garden designs.

Innovation Solution

A new Buxus cultivar 'HER2009B01' with a low, bushy habit, small medium-green leaves, and resistance to box blight, developed through a breeding program and propagated via stem cuttings, offering stability in successive generations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing Buxus cultivars are used, then general ornamental value is maintained, but resistance to Calonectria pseudonaviculata (box blight) is insufficient

Engineering Contradiction:

Improveresistance to box blightVSAvoidsusceptibility to Calonectria pseudonaviculata

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by developing a new cultivar with altered genetic parameters that confer resistance to box blight. The breeding program selected for specific resistance traits, changing the biological parameters of the plant to achieve disease resistance while maintaining ornamental qualities.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If existing Buxus cultivars are used, then ornamental value is maintained, but growth habit is unsuitable for low hedges and historical garden designs

Engineering Contradiction:

Improvesuitability for low hedges and historical gardensVSAvoidplant habit

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The patent applies local quality by developing a cultivar with specific localized growth characteristics - a low, bushy habit with compact foliage density that is particularly suited for low hedges and historical garden designs, while maintaining overall ornamental quality.

Inventive Principle:

Principle #3Local quality

3Length of stationary object

If Buxus sempervirens cultivar 'Suffruticosa' is used, then low growing plant habit is achieved, but susceptibility to box blight increases and leaf quality deteriorates

Engineering Contradiction:

Improveplant heightVSAvoidsusceptibility to box blight

Core Design Contradiction:

Length of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent resolves this contradiction by changing the genetic parameters of the plant to achieve both low growth habit and disease resistance simultaneously. The new cultivar 'HER2009B01' was bred to have compact size suitable for low hedges while incorporating resistance genes against Calonectria pseudonaviculata, eliminating the susceptibility problem present in 'Suffruticosa'.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP32274P2<i>Buxus </i>plant named ‘HER2009B01’

Publication Date: 2020.10.06 HERPLANT BVBA

AI summary

A new cultivar of Buxus plant named ‘HER2009B01’ that is characterized by its low, bushy plant habit, its eaves that are small in size and medium green in color, its suitability for use for low hedges and shaping into balls and for use in historical gardens, and its resistance to Calonectria pseudonaviculata (box blight).