Clematis Evipo110 Compact Growth and White Flower Breeding
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Solution Overview
Problem
Clematis plants in commercial cultivation lacked uniform and abundant white flowers, compact growth suitable for container culture, improved disease resistance, and flowering on new growth, which are essential qualities for nursery culture.
Innovation Solution
A new Clematis variety, 'Evipo110', was developed through controlled crossing, exhibiting white flowers with a diameter of 90-100 mm, growing to 180 cm in one season, and demonstrating vigorous and compact growth, improved disease resistance, and flowering on new growth, achieved by asexual reproduction and selection by Mogens N. Olesen and Raymond J. Evison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If Clematis plants are bred for large flower diameter, then flower size increases, but plant height and growth vigor increase excessively making container culture difficult
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific trait combinations: maintaining flower diameter of 120-130 mm while controlling plant height to 80 cm, and achieving compact growth habit. This represents a deliberate change in the parameter set of the plant to resolve the contradiction between large flowers and manageable size for container culture.
2Productivity
If Clematis plants are bred for vigorous growth, then growth rate increases, but disease susceptibility increases
Solution Approach 1:
The patent resolves this contradiction by changing the genetic parameters through controlled hybridization between specific parents (Clematis 'Evipo052' and an unnamed seedling), selecting for the unique combination of vigorous growth and improved disease resistance. The resulting plant shows both rapid growth and tolerance to Clematis wilt and other diseases.
3Duration of action of moving object
If Clematis plants are bred for flowering on new growth, then flowering time improves, but plant complexity and breeding difficulty increase
Solution Approach 1:
The patent applies preliminary action by pre-selecting parent plants with desirable traits (Clematis 'Evipo052' with continuous flowering and compact growth) before hybridization. This preliminary selection simplifies the breeding process and increases the likelihood of achieving flowering on new growth in the offspring, reducing the overall breeding complexity.
Data Source
AI summary
A new Clematis plant with a compact growth habit, profuse, white flowers, and continuous summer flowering. The variety successfully propagates from softwood cuttings and is suitable for cultivation in commercial nursery culture. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation from vegetative cuttings.