Compact Viola Cultivar SMEV2 Breeding via Preliminary Selection
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Solution Overview
Problem
There is a need for a new Viola cultivar that exhibits a unique combination of compact growth habit, glossy green foliage, and large, fragrant yellow flowers, which are not found in existing varieties, and can thrive in shade to filtered sunlight with regular water, while being hardy in USDA Zone 5.
Innovation Solution
The development of Viola×hybrida 'SMEV2' through controlled cross-pollination of Viola 'Lord Primrose' and Viola 'Painted Porcelain', resulting in a hybrid seedling selection with solid yellow flowers, compact dome-shaped habit, and asexual propagation using softwood cuttings, which maintains stability and true-to-type characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Viola 'Lord Primrose' and Viola 'Painted Porcelain' are crossed to create a new cultivar, then flower color uniqueness is improved, but breeding complexity increases
Solution Approach 1:
The inventor performed preliminary selection of parent plants with specific desirable traits (flower color, habit, foliage) before crossing. This preliminary action simplified the subsequent breeding process by ensuring that the cross between Viola 'Lord Primrose' and Viola 'Painted Porcelain' would likely produce offspring with the desired yellow flower color and compact habit, reducing the need for extensive further breeding work.
2Stability of the object's composition
If multiple seedlings are selected and propagated asexually, then trait stability is improved, but propagation time increases
Solution Approach 1:
The inventor combined multiple selection criteria (flower color, habit, foliage quality, flower size) into a single selection decision for each seedling. By evaluating and selecting based on all desired traits simultaneously rather than sequentially, the breeding process was accelerated while ensuring that selected plants possessed the complete set of desirable characteristics that would be stabilized through asexual propagation.
3Adaptability or versatility
If a compact dome-shaped habit is selected, then landscape adaptability is improved, but plant size reduction may limit flower display
Solution Approach 1:
The selected cultivar exhibits local quality differentiation where the compact dome-shaped habit concentrates foliage and flowers in a dense, space-efficient form suitable for container and border plantings, while the flowers themselves maintain large size and prominent display. This local quality approach allows the plant to occupy minimal space while still providing substantial floral display, resolving the contradiction between compactness and flower visibility.
Data Source
AI summary
A new cultivar of Viola named ‘SMEV2’ that is distinguishable by compact dome-shaped habit, green glossy foliage, and large soft yellow flowers. In combination these traits set ‘SMEV2’ apart from all other existing varieties of Viola known to the inventor.