Petunia Cultivar Bi-Color Flower Pattern and Rain Tolerance
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Solution Overview
Problem
There is a need for a new and distinct cultivar of Petunia x atkinsiana that exhibits specific traits such as bi-color flowers, day-length neutral flowering, spreading habit, and high flower production, which are not adequately met by existing varieties.
Innovation Solution
The cultivar 'KERTEAMORN' is developed through crossing '11-293-15' and '15-572-16', characterized by medium pink and white bi-color flowers, stable thin light pink flower rims, and high flower production, with traits retained through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing Petunia varieties are used, then they have simple flower colors and limited flowering patterns, but they lack the bi-color flowers with large white eyes and thin light pink rims that are desired
Solution Approach 1:
The patent applies local quality by creating distinct color zones within the flower structure: a large white eye at the center, medium pink in the middle section, and a thin light pink rim at the edge. This zonal color distribution achieves the desired bi-color appearance with multiple color regions in a single flower, resolving the contradiction between flower pattern complexity and flowering adaptability.
Solution Approach 2:
The patent combines genetic traits from two different Petunia atkinsiana varieties ('11-293-15' and '15-572-16') to create a composite genotype that expresses the desired bi-color flower pattern. This genetic composite allows the plant to achieve complex flower coloring while maintaining the adaptability of the parent varieties.
2Productivity
If day-length sensitive flowering is used, then flowers only produce under specific photoperiod conditions, but this limits flowering in varying environmental conditions
Solution Approach 1:
The patent achieves universality by creating a day-length neutral flowering variety that can initiate flower buds under various photoperiod conditions (less than 10 hours, 10-14 hours, and more than 14 hours). This multi-functional flowering response allows the plant to maintain high flower production across different environmental conditions, resolving the contradiction between productivity and environmental adaptability.
3Productivity
If compact plant habit is used, then plants have smaller size, but they produce fewer flowers per plant
Solution Approach 1:
The patent applies dimensionality change by creating a spreading plant habit that extends horizontally rather than growing vertically. The plant achieves a spread of 30-50 cm while maintaining a height of only 10-20 cm, effectively trading vertical dimension for horizontal dimension to increase flowering surface area and flower production per plant.
4Shape
If thick flower rims are used, then flowers have more prominent edges, but the rim color stability is poor
Solution Approach 1:
The patent applies parameter changes by optimizing the rim thickness to a specific range (2-5 mm) and controlling the pigment concentration to achieve stable light pink coloration. This precise parameter control ensures the rim maintains both visual prominence and color stability across different environmental conditions, resolving the contradiction between rim prominence and color stability.
Data Source
AI summary
A new and distinct Petunia cultivar named ‘KERTEAMORN’ is disclosed, characterized by a spreading, free-branching growth habit, and bi-color medium pink flowers with a large white eye and thin light pink flower rim. Flowering begins under short day conditions. The plants flower abundantly and are more tolerant to rain than the average Petunia. The new variety is a Petunia, normally produced as an outdoor garden or container plant.