Compact Rosa hybrida Breeding for Disease Resistance and Fragrance

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing rose cultivars lack a combination of compact growth habit, uniform flowering, long-lasting fragrant flowers, attractive foliage, and resistance to diseases commonly encountered in greenhouse and nursery culture.

Innovation Solution

The development of Rosa hybrida 'KORaroma05' through controlled cross-pollination breeding, resulting in a compact rose with pastel pink, fragrant, and disease-resistant flowers, achieved through asexual propagation and selection for desirable traits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing rose cultivars are used, then they may have some individual qualities, but they lack the combination of compact growth habit, uniform flowering, long-lasting fragrant flowers, attractive foliage, and disease resistance

Engineering Contradiction:

Improvecombination of desirable qualitiesVSAvoiddisease resistance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines multiple desirable traits (compact growth habit, uniform flowering, long-lasting fragrant flowers, attractive foliage, and disease resistance) into a single rose cultivar through controlled cross-pollination and selective breeding, creating a composite variety that exhibits all these qualities simultaneously

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If rose cultivars are bred for disease resistance, then reliability improves, but other qualities such as flower fragrance and longevity may be compromised

Engineering Contradiction:

Improvedisease resistanceVSAvoidflower longevity

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The breeding program systematically varied and selected for multiple parameters simultaneously including disease resistance, flower longevity, fragrance intensity, and growth habit, achieving optimal values for all parameters through controlled pollination and phenotypic selection

Inventive Principle:

Principle #35Parameter changes

3Shape

If rose plants are grown as potted floral plants, then compact growth habit is desired, but uniform flowering and recurrent blooming are challenging to achieve

Engineering Contradiction:

Improvecompact growth habitVSAvoiduniform flowering

Core Design Contradiction:

ShapeVSStability of the object's composition

Solution Approach 1:

The breeding program employed continuous observation and selection based on phenotypic feedback, evaluating seedling performance in controlled environments and selecting only those exhibiting uniform flowering patterns and compact growth, thereby stabilizing these traits in the final cultivar

Inventive Principle:

Principle #23Feedback

Data Source

PatentUSPP29985P3Miniature rose plant named ‘KORaroma05’

Publication Date: 2018.12.18 W KORDES SOHNE ROSENSCHULEN GMBH & CO KG

AI summary

‘KORaroma05’ is a new and distinct variety of Rosa hybrida which is characterized by the combination of a compact growth habit with a moderately vigorous rate of growth, above average resistance to many rose diseases, solitary pastel pink flowers, double flowers, and strongly fragrant flowers. The new variety propagates successfully by stem cuttings and grafting and has shown to be uniform and stable in the resulting generations from asexual propagation.