Clematis Evipo068 Compact Growth and Disease Resistance
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Solution Overview
Problem
Clematis plants in commercial cultivation lacked uniform and abundant red-purple flowers, vigorous and compact growth, improved disease resistance, and a non-climbing habit, making them unsuitable for container culture.
Innovation Solution
A new Clematis variety 'Evipo068' was developed through controlled crossing, exhibiting red-purple flowers, compact growth, and improved disease resistance, achieved through asexual reproduction by vegetative stem cuttings and traditional layering, demonstrating stability in propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional clematis varieties are used for commercial cultivation, then they can be propagated easily, but they lack uniform and abundant red-purple flowers, vigorous and compact growth, and disease resistance
Solution Approach 1:
The patent applies parameter changes by selecting specific parental plants with desirable traits (uniform red-purple flowers, compact growth habit, disease resistance) and controlling the hybridization process to produce offspring with improved and stabilized characteristics. The F1 generation exhibits enhanced uniformity in flower color and size, compact growth habit, and improved disease resistance compared to traditional varieties.
2Productivity
If clematis plants are bred for vigorous growth and abundant flowers, then they produce more blooms, but they become less compact and unsuitable for container culture
Solution Approach 1:
The patent applies local quality by creating a plant variety where specific local characteristics (compact growth habit, uniform flower size and color) are enhanced while maintaining overall productivity. The F1 generation displays uniformly small to medium-sized flowers (5-7 cm diameter) produced abundantly on compact vines, making the plant suitable for container culture while still providing abundant blooms.
3Manufacturing precision
If clematis varieties are selected for uniform flower characteristics, then they provide consistent blooms, but they lack disease resistance and vigorous growth
Solution Approach 1:
The patent applies composite materials principle by combining genetic traits from two different parental plants through controlled hybridization. The F1 generation inherits and stabilizes desirable traits from both parents, including uniform red-purple flowers from one parent and disease resistance with vigorous compact growth from the other, creating a composite plant with multiple improved characteristics.
4Productivity
If traditional clematis are propagated by seed, then they can reproduce, but they do not maintain true-to-type characteristics across generations
Solution Approach 1:
The patent applies preliminary action by performing controlled hybridization in advance to produce an F1 generation with stabilized and uniform characteristics. This preliminary breeding step ensures that subsequent propagation by cuttings or layering maintains true-to-type characteristics, as the F1 plants are genetically uniform and exhibit consistent traits across generations when propagated asexually.
Data Source
AI summary
A new Clematis plant with a compact growth habit, profuse, red-purple 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.