Mini-flora Rose Cultivar WEKclauni Breeding for Compact Growth and Disease Resistance
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Solution Overview
Problem
Current rose cultivars lack a variety that combines medium-sized, dark-red flowers with double petalage, golden-yellow and red anther and filament coloration, and a moderately low, upright growth habit suitable for outdoor garden decoration, while also offering resistance to powdery mildew and rust.
Innovation Solution
A new Rosa hybrida cultivar, 'WEKclauni', is developed through crossing 'POUlclaus' and 'JAColber', characterized by medium-sized double flowers with 15-28 petals, dark-red coloration, golden-yellow and red anther and filament coloration, and an upright, open growth habit, which can be asexually propagated by budding and grafting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If rose cultivars are bred for larger flowers with heavier petalage, then flower size and petal count increase, but plant height becomes significantly taller and less suitable for compact garden decoration
Solution Approach 1:
The patent applies parameter changes by breeding a rose cultivar with specific floral parameters (medium size 5.4-8.0 cm, double petalage 15-28 petals) while controlling plant height parameters (46-52 cm). This resolves the contradiction by finding an optimal parameter range that satisfies both larger flower requirements and compact growth requirements.
2Length of stationary object
If rose cultivars are bred for taller growth habit, then plant reaches greater height, but it becomes less suitable for compact outdoor garden decoration
Solution Approach 1:
The patent optimizes the plant height parameter to 46-52 cm, which is sufficiently tall to support medium-sized flowers but compact enough for garden decoration applications. This parameter optimization resolves the contradiction between achieving adequate plant development and maintaining suitability for decorative purposes.
3Shape
If rose cultivars are bred for double petalage, then flower aesthetic value increases, but resistance to powdery mildew and rust may be compromised
Solution Approach 1:
The patent merges multiple desirable traits including double petalage (15-28 petals), disease resistance (powdery mildew and rust), and heat tolerance into a single cultivar. This combining of multiple characteristics resolves the contradiction by achieving both aesthetic value and reliability simultaneously.
Solution Approach 2:
The cultivar represents a composite genetic makeup combining traits from parent cultivars 'POUlclaus' and 'JAColber', resulting in a composite plant that exhibits both double petalage and disease resistance. This genetic composite approach allows simultaneous expression of aesthetically pleasing features and protective characteristics.
4Shape
If rose cultivars are bred for specific coloration patterns, then aesthetic appeal increases, but adaptability to various climates may be reduced
Solution Approach 1:
The patent combines specific coloration traits (dark-red flowers, golden-yellow and red anther and filament coloration, red suffusion on stipule and inner sepal surface) with climate adaptability traits including heat tolerance and disease resistance. This merging of aesthetic and adaptive characteristics resolves the contradiction between specialized appearance and broad environmental suitability.
Data Source
AI summary
‘WEKclauni’ is a new variety of Mini-flora rose suitable for garden decoration, having flowers of dark red coloration, on an upright and fully branched plant.