Climbing Rose Cultivar With Own-Root Vigor And Disease Resistance

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Solution Overview

Problem

Existing rose cultivars lack vigor without grafting, have fewer petals, and are susceptible to diseases like black spot and powdery mildew, with limited repeat flowering and distinct flower color options.

Innovation Solution

The cultivar 'ALTenglanda' is a vigorous upright climbing rose with 50-60 petals, resistant to black spot and powdery mildew, and requires no grafting, featuring a rich apricot flower color and continuous repeat flowering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If existing rose cultivars are grown without grafting, then cultivation simplicity is improved, but plant vigor and growth stability deteriorate

Engineering Contradiction:

Improvecultivation simplicityVSAvoidplant vigor

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The rose cultivar 'ALTenglanda' possesses inherent vigor and disease resistance that enables it to thrive on its own roots without requiring grafting onto disease-resistant rootstocks. The plant serves its own needs for vigor and disease resistance through its own root system, eliminating the need for external grafting intervention.

Inventive Principle:

Principle #25Self-service

2Reliability

If existing rose cultivars are bred for disease resistance, then disease resistance is improved, but flower petal number and ornamental value deteriorate

Engineering Contradiction:

Improvedisease resistanceVSAvoidflower petal number

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The breeding program successfully merged multiple desirable traits into a single cultivar: disease resistance (to black spot and powdery mildew), high petal count (50-60 petals), vigorous growth habit, and repeat flowering capability. These previously separate traits are now combined in 'ALTenglanda', allowing the plant to exhibit all characteristics simultaneously without compromise.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If existing rose cultivars are bred for vigorous growth, then plant vigor is improved, but susceptibility to diseases like black spot and powdery mildew worsens

Engineering Contradiction:

Improveplant vigorVSAvoiddisease susceptibility

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The cultivar combines vigorous upright climbing growth with strong disease resistance to black spot and powdery mildew. The plant achieves both high vigor and disease resistance through its own genetic makeup, eliminating the traditional trade-off between these two characteristics.

Inventive Principle:

Principle #5Merging (Combining)

4Duration of action of moving object

If existing rose cultivars are bred for repeat flowering, then flowering duration is improved, but flower color variety and distinctiveness worsen

Engineering Contradiction:

Improveflowering durationVSAvoidflower color distinctiveness

Core Design Contradiction:

Duration of action of moving objectVSShape

Solution Approach 1:

The cultivar exhibits continuous repeat flowering from spring through fall, with each flush producing flowers of consistent rich apricot color. The breeding program optimized the flowering parameter to achieve continuous blooming while maintaining distinct color characteristics through selective breeding.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP37079P2Climbing rose plant named ‘ALTenglanda’

Publication Date: 2025.11.04 ALTMAN SPECIALTY PLANTS LLC

AI summary

A new and distinct cultivar of Rose plant named ‘ALTenglanda’ is disclosed, characterized by distinctive fully double flowers rich apricot flowers with an average of 50 to 60 petals. The new cultivar is a vigorous upright shrub rose with continuous repeat flowering after the second year of planting. Plants have dark, foliage resistant to black spot and powdery mildew disease. The new variety is normally produced as an outdoor garden or container plant.