Philadelphus SMNPVG Cultivar Upright Columnar Shape
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Solution Overview
Problem
There is a need for a new Philadelphus cultivar that exhibits unique characteristics such as an upright, columnar shape, vertically stacked flowers, excellent container performance, and thick, durable foliage, which are not found in existing varieties like Philadelphus 'Belle Etoile', and can withstand varying environmental conditions without genotype variance.
Innovation Solution
The development of the Philadelphus cultivar 'SMNPVG' through planned breeding, which is propagated via softwood cuttings and exhibits stable unique features across generations, differing from its seed parent in shape, leaf thickness, and foliage characteristics, while being comparable to 'Belle Etoile' in other horticultural traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional Philadelphus varieties are used, then the plant has a rounded shape and delicate leaves, but it lacks the upright columnar shape and thick durable foliage desired for container performance
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific phenotypic parameters (upright growth habit, columnar shape, thick foliage) that differ from the parent variety. The breeder observed and selected seedlings exhibiting these desired parameters, ultimately developing a cultivar that stabilizes these traits through controlled propagation, thereby transforming the plant's morphological and structural characteristics.
2Adaptability or versatility
If the plant is propagated through open pollination, then new genetic variation is produced, but the unique characteristics may not be stable across generations
Solution Approach 1:
The patent employs copying through asexual propagation methods. After selecting the desired plant with stable unique characteristics, the breeder propagated it through cuttings and other asexual means to create identical genetic copies. This ensures that the unique traits (upright columnar shape, thick foliage, vertical flower stacking) are maintained faithfully across generations without the genetic recombination that would occur in open pollination, thus resolving the contradiction between generating variation and maintaining stability.
3Adaptability or versatility
If the plant is grown under varying environmental conditions, then adaptability is demonstrated, but phenotypic variation may occur without genotype change
Solution Approach 1:
The patent addresses this contradiction by establishing that while environmental parameters (temperature, light, soil) can cause phenotypic variations, the underlying genetic parameters remain constant. The breeder observed that the unique characteristics were maintained across different environments, indicating that the genotype provides stable inheritance while allowing for normal phenotypic expression ranges. This distinguishes the cultivar's inherent stability from environmental-induced variation.
Data Source
AI summary
A new and distinct Philadelphus cultivar named ‘SMNPVG’ is disclosed, characterized by a very upright, columnar shape, and are well suited to container production. Foliage is thick and durable. Flowers are uniquely arranged in vertical stacks. The new variety is a Philadelphus, normally used for outdoor ornamental purposes.