Clematis EviGsy152 Compact Habit Large Repeat Blooming
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Solution Overview
Problem
There is a need for new cultivars of Clematis with compact plant habits, large-sized flowers, and unique flower colors that are stable and reproducible through asexual propagation.
Innovation Solution
The development of the Clematis cultivar 'EviGsy152', which features large, deep blue-purple flowers with contrasting red-purple anthers, a compact growth habit, and repeat flowering from May to July and September, achieved through controlled breeding and asexual propagation by stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional Clematis breeding is used, then plant habit is often sprawling or vigorous, but compact growth habit is desired for container and terrace use
Solution Approach 1:
The patent applies parameter changes by selectively breeding for and fixing specific growth parameters to achieve a compact plant habit. The cultivar is derived from controlled crosses between Clematis patens and C. viticella, with selection criteria focusing on compact growth, large flower size, and repeat blooming. Asexual propagation by stem cuttings was used to fix these parameters and ensure true-to-type reproduction of the compact habit in successive generations.
2Area of moving object
If flower size is increased to large (up to 14 cm diameter), then visual impact is improved, but breeding stability and reproducibility become more difficult to achieve
Solution Approach 1:
The patent applies copying through asexual propagation by stem cuttings to reproduce the large flower size and other desirable traits true-to-type. The cutting propagation process creates genetic copies of the selected parent plant, ensuring that the large flower size (up to 14 cm diameter) and other characteristics are faithfully reproduced in successive generations without the variability inherent in sexual reproduction.
Solution Approach 2:
The patent uses parameter changes in the breeding program to select for and fix large flower size. Controlled crosses were made between specific parents (C. patens and C. viticella) with selection criteria focusing on large flower diameter, and this parameter was fixed through multiple generations of selection and asexual propagation.
3Ease of manufacture
If unique flower colors (deep blue-purple with red-purple anthers) are developed, then aesthetic uniqueness is improved, but maintaining color stability through propagation becomes challenging
Solution Approach 1:
The patent applies copying through stem cutting propagation to maintain color stability. The asexual propagation process creates genetic copies that faithfully reproduce the unique deep blue-purple tepal coloration and contrasting red-purple anther coloration, ensuring color stability across generations without the variability introduced by sexual reproduction.
Solution Approach 2:
The patent uses parameter changes in the breeding program to develop and fix unique coloration. Controlled crosses were made with specific color objectives, and selection criteria focused on deep blue-purple tepals with red-purple anthers. This parameter fixation was achieved through multiple generations of selection and confirmed through asexual propagation.
4Productivity
If repeat flowering habit (May- July and September) is established, then productivity is improved, but breeding complexity and selection difficulty increase
Solution Approach 1:
The patent applies copying through asexual propagation to fix the repeat flowering habit. The stem cutting propagation process creates true-to-type copies that maintain the complex repeat blooming pattern (May-July and September flowering) without the variability of sexual reproduction, simplifying the propagation process while maintaining high productivity.
Solution Approach 2:
The patent uses parameter changes in the breeding program to select for repeat flowering. Controlled crosses were made with selection criteria focusing on multi-season blooming, and this parameter was fixed through generations of selection. The breeding program managed complexity through systematic selection and documentation of breeding lines.
Data Source
AI summary
A new cultivar of Clematis plant named ‘EviGsy152’ that is characterized by its large sized flowers (up to 14 cm in diameter), its flowers that are deep blue-purple in color with contrasting red-purple anthers, its star-shaped flowers, its repeat flowering from May through July and again in September, its floriferous blooming habit with an abundance of flowers, and its high suitability for use in gardens and containers.