Rosa hybrida KORmahensi Breeding for Uniform Growth and Disease Resistance
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Solution Overview
Problem
Existing rose cultivars lack uniform growth and flowering, abundant attractive flowers, attractive foliage, and resistance to common diseases, making them unsuitable for landscapes and gardens.
Innovation Solution
The development of Rosa hybrida 'KORmahensi' through controlled cross-pollination breeding, which results in a rose with an upright bushy growth habit, abundant and large pink flowers, excellent disease resistance, and asexual propagation that reproduces true to type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing rose cultivars are used, then they can be grown in landscapes and gardens, but they lack uniform growth and flowering, abundant attractive flowers, attractive foliage, and resistance to diseases
Solution Approach 1:
The patent applies parameter changes by selectively breeding and crossing specific rose varieties with desirable traits. The inventor cross-pollinated Rosa hybrida 'AUSham' with an unnamed breeding line, selecting and propagating seedlings that exhibited superior characteristics including uniform growth, abundant flowering, attractive foliage, and disease resistance. This systematic parameter optimization through controlled breeding resulted in the new cultivar 'KORmahensi' that achieves multiple desirable traits simultaneously.
2Quantity of substance
If rose cultivars are bred for abundant flowers, then flower quantity increases, but uniform growth and disease resistance may be compromised
Solution Approach 1:
The patent merges multiple desirable traits into a single cultivar by combining the benefits of different parent varieties. The cross-pollination between Rosa hybrida 'AUSham' and the unnamed breeding line resulted in seedlings that exhibited a combination of uniform growth habit, abundant flowering, attractive foliage, and disease resistance. This merging of traits through controlled breeding achieved a balanced cultivar that simultaneously displays all four target characteristics.
3Reliability
If rose cultivars are developed with superior characteristics, then quality improves, but propagation consistency may be compromised
Solution Approach 1:
The patent applies self-service through asexual propagation methods that enable the cultivar to reproduce true to type. The inventor successfully propagated 'KORmahensi' through stem cuttings and grafting, allowing the plant to replicate its superior characteristics without genetic variation. This self-replicating capability ensures that each propagated plant maintains the uniform growth, abundant flowering, attractive foliage, and disease resistance of the parent cultivar, achieving both quality improvement and propagation consistency.
Data Source
AI summary
‘KORmahensi’ is a new and distinct variety of Rosa hybrida which is characterized by the combination of an upright and bushy growth habit and large, very-double flowers which are pink in color. The new variety propagates successfully by grafting and by stem cuttings and has shown to be uniform and stable in the resulting generations from asexual propagation.