Viburnum NCVX1 Compact Prostrate Cultivar Breeding

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Solution Overview

Problem

There is a need for a new Viburnum cultivar that combines compact growth habit, glossy foliage, and vibrant fall color, as existing varieties either lack these characteristics or have different growth habits and foliage traits.

Innovation Solution

The development of Viburnum 'NCVX1' through breeding from an open-pollinated F1 hybrid Viburnum 'Huron' and 'Chippewa', characterized by a compact, prostrate habit and semi-evergreen glossy leaves with red to purple fall and winter foliage, achieved through asexual propagation and rooting with indole butyric acid treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If Viburnum is bred for compact growth habit, then shrub size is reduced, but foliage glossiness and fall color vibrancy may be compromised

Engineering Contradiction:

Improveshrub sizeVSAvoidfoliage glossiness

Core Design Contradiction:

Volume of moving objectVSIllumination intensity

Solution Approach 1:

The breeding program systematically varied genetic parameters through controlled pollination between Viburnum lobophyllum and Viburnum japonicum, selecting for specific combinations of compact growth habit, glossy foliage, and vibrant fall color that simultaneously optimized multiple traits

Inventive Principle:

Principle #35Parameter changes

2Volume of moving object

If Viburnum is bred for compact growth habit, then shrub size is reduced, but fall color vibrancy may be compromised

Engineering Contradiction:

Improveshrub sizeVSAvoidfall color vibrancy

Core Design Contradiction:

Volume of moving objectVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If asexual propagation is used to maintain distinctive characteristics, then trait consistency is improved, but propagation time and cost increase

Engineering Contradiction:

Improvetrait consistencyVSAvoidpropagation time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The cultivar underwent preliminary asexual propagation and characterization to establish and verify its distinctive traits before commercial release, ensuring trait consistency is locked in through vegetative reproduction rather than seed propagation

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Viburnum 'NCVX1' exhibits a unique combination of compact growth, glossy foliage, and striking fall color, distinguishing it from its parents and commercial varieties, while maintaining these traits through successive asexual propagations, and showing no significant disease or insect resistance issues.

Implementation Method 1

NCVX1 roots readily from softwood cuttings treated with a basal dip of 4,000-5,000 ppm indole butyric acid (potassium salt) in water

Methodology Applied

Scientific EffectHormonal stimulation:

Data Source

PatentUSPP28095P3<i>Viburnum </i>plant named ‘NCVX1’

Publication Date: 2017.06.13 NORTHERN CAROLINA UNIV

AI summary

A new and distinct Viburnum cultivar plant named ‘NCVX1’ is disclosed, characterized by highly glossy, semi-evergreen foliage, which exhibits Fall color of red to purple. Plants are compact with a uniquely prostrate branching habit. Abundant cymes are produced with 150 to 400 florets. The new variety is a Viburnum normally produced as an outdoor garden or container plant.