Petunia Cultivar Sunsurf Ejiusa Compact Habit
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Solution Overview
Problem
There is a need for compact, freely branching, and freely flowering Petunia plants with uniformly mounding habit and attractive flower coloration that can perform well in various environmental conditions.
Innovation Solution
A new cultivar of Petunia×hybrida, 'Sunsurf Ejiusa', was developed through controlled cross-pollination, exhibiting compact and uniformly mounding habit, vigorous growth, early and continuous flowering, and light yellow-green bi-colored flowers, achieved through asexual reproduction by terminal cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional Petunia breeding methods are used, then flower size can be increased, but plant habit becomes less compact and uniform
Solution Approach 1:
The patent applies parameter changes by selecting specific genetic combinations through controlled cross-pollination that alter plant architecture parameters. The new cultivar 'Sunsurf Ejiusa' exhibits a compact mounding habit with uniform shape while maintaining flower size, achieved by changing the genetic parameters inherited from parent plants Px2982-01 and Px3015-03. This resolves the contradiction by finding optimal parameter combinations that satisfy both requirements simultaneously.
2Productivity
If vigorous growth is promoted, then flowering quantity increases, but plant height increases reducing compactness
Solution Approach 1:
The patent applies local quality by directing vigorous growth specifically to lateral branching and flower production rather than vertical elongation. The new cultivar exhibits freely branching habit with multiple lateral branches developing per plant, concentrating growth energy locally in the branching structure and flower buds. This allows high flowering quantity (about 85 flowers per plant) while maintaining a compact height of about 29.3 cm, resolving the contradiction between productivity and plant length.
3Duration of action of moving object
If early flowering is achieved, then flowering period extends, but genetic stability may be compromised
Solution Approach 1:
The patent applies self-service through asexual reproduction by terminal cuttings, where the plant propagates itself genetically identical clones. This method preserves genetic stability (true-to-type characteristics) while maintaining the early and long flowering habit. The rooted cuttings inherit the extended flowering period naturally without requiring genetic modification, resolving the contradiction between duration and stability.
Data Source
AI summary
A new and distinct cultivar of Petunia plant named ‘Sunsurf Ejiusa’, characterized by its compact and uniformly mounding plant habit; vigorous growth habit; freely branching habit; early and freely flowering habit; long flowering period; light and bright yellow green bi-colored flowers; and good garden performance.