Rhododendron ‘NCB195’ for Phenotype Stability and Root Rot Resistance

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Solution Overview

Problem

Existing Rhododendron cultivars lack good disease resistance, particularly against Phytophthora root rot, and exhibit varying phenotypes under different environmental conditions, which can affect their horticultural characteristics and commercial viability.

Innovation Solution

Development of the Rhododendron cultivar 'NCB195' with compact habit, attractive salmon/coral flowers, and enhanced disease resistance, including resistance to Phytophthora root rot, through controlled breeding and asexual propagation, ensuring consistent phenotype across varying environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing Rhododendron cultivars are grown in varying environmental conditions, then their horticultural characteristics may change, but their phenotype consistency deteriorates

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoidphenotype consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent selects and breeds Rhododendron plants with specific genetic parameters that confer stability across environmental variations. The cultivar 'NCB195' was developed through controlled breeding to maintain consistent phenotype (compact habit, salmon/coral flower color, disease resistance) across different temperature, humidity, and light conditions by optimizing its genetic composition.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If existing Rhododendron cultivars are used, then commercial cultivation is possible, but disease resistance is insufficient

Engineering Contradiction:

Improvecommercial viabilityVSAvoiddisease resistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary breeding actions to develop disease resistance before commercial cultivation. The cultivar 'NCB195' was bred and selected over multiple generations (first asexual propagation in 2018, successive propagations thereafter) to pre-establish resistance to Phytophthora root rot and other diseases, ensuring reliable performance in commercial production without requiring additional disease management interventions.

Inventive Principle:

Principle #10Preliminary action

3Volume of moving object

If compact habit is selected for breeding, then plant size is reduced, but flowering attractiveness may be compromised

Engineering Contradiction:

Improveplant sizeVSAvoidflower attractiveness

Core Design Contradiction:

Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by concentrating horticultural value in specific areas of the compact plant. Cultivar 'NCB195' maintains a compact overall size (75 cm width) while producing large, showy salmon/coral flowers with yellow-orange blotches that provide exceptional visual impact. The compact habit is maintained through controlled branching, while flowering intensity and flower size are locally enhanced at the crown and branch tips.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUSPP36915P2<i>Rhododendron </i>plant named ‘NCB195’

Publication Date: 2025.09.02 UNIV OF CONNECTICUT

AI summary

A new and distinct cultivar of Rhododendron plant named ‘NCB195’ is disclosed, characterized by large, attractive, salmon/coral flowers with a yellow-orange blotch. Plants are compact, well-branched, and exhibit good disease resistance. The new cultivar is a Rhododendron, suitable for ornamental garden purposes.