Portulaca DPORMPZO Cultivar Breeding for Semi-Trailing Habit and Orange Flowers
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Solution Overview
Problem
There is a need for new Portulaca varieties with distinct ornamental horticultural characteristics such as controlled semi-trailing habit, large flowers, vivid orange color, and dark green foliage that differentiate from existing varieties in terms of plant habit, flower size, and foliage color.
Innovation Solution
The development of the Portulaca cultivar 'DPORMPZO' through open-pollination breeding, which exhibits a controlled semi-trailing habit, large vivid orange flowers, and dark green foliage, distinguishing it from its seed and pollen parents and commercial comparators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If open-pollination breeding is used to develop new Portulaca varieties, then genetic diversity and unique characteristics are achieved, but the breeding time and generational uncertainty increase
Solution Approach 1:
The patent applies preliminary action by performing controlled open-pollination during specific flowering periods (2016) and immediately identifying and selecting promising seedlings (July 2017) from the resulting progeny. This proactive selection approach accelerates the breeding process by catching desirable traits early rather than waiting for multiple generations to stabilize.
Solution Approach 2:
The patent employs feedback through extensive confidential testing of the selected cultivar to determine and define its desirable characteristics. This systematic evaluation provides feedback on the success of the open-pollination breeding, allowing for refinement of selection criteria and confirmation of stable inheritance of target traits.
2Area of moving object
If large flower size is selected for ornamental value, then aesthetic appeal increases, but plant vigor and compactness may be compromised
Solution Approach 1:
The patent applies local quality by differentiating selection criteria for different plant parts: large flower size (5.3 cm diameter) is selected for the flower heads to maximize ornamental appeal, while the overall plant habit is selected for controlled semi-trailing growth with medium vigor. This localized optimization allows each part of the plant to excel in its specific function.
Solution Approach 2:
The patent achieves parameter changes by transforming the plant's growth parameters through selective breeding. The cultivar exhibits medium vigor (intermediate growth rate) and controlled semi-trailing habit, representing optimized parameter values that balance flower size production with manageable plant architecture suitable for ornamental containers.
3Ease of manufacture
If vivid orange flower color is bred for market distinction, then ornamental appeal increases, but color stability across environmental conditions may be challenged
Solution Approach 1:
The patent applies this principle by selecting for flowers with short but intense display periods - each flower opens and displays its vivid orange color (RHS Orange-Red 33A) for about 3 days from bud to fully opened, then self-cleans. This concentrated color display strategy maximizes ornamental impact during the brief flowering window without requiring long-term color stability.
Solution Approach 2:
The patent utilizes color changes by documenting the flower's color progression from bud (RHS Yellow-Green 144B with anthocyanin flush) to fully opened (RHS Orange-Red 33A), accepting and managing this natural color transition as part of the ornamental characteristic rather than attempting to freeze a single color state.
4Shape
If semi-trailing habit is selected for container growth, then space utilization improves, but plant vigor and flowering abundance may be reduced
Solution Approach 1:
The patent applies dynamics by selecting for a flexible semi-trailing habit that can adapt to container boundaries while maintaining medium vigor. The plant exhibits dynamic growth patterns with primary lateral branches extending 28 cm and freely branching, allowing it to fill container space efficiently without requiring suppressed vigor that would reduce flowering abundance.
Solution Approach 2:
The patent achieves universality by creating a cultivar that simultaneously fulfills multiple functions: the semi-trailing habit provides space-efficient container growth, the medium vigor ensures manageable plant size, and the abundant flowering (multiple flowers per plant) delivers ornamental productivity. All these traits work together rather than trade off against each other.
Data Source
AI summary
A new and distinct cultivar of Portulaca plant named ‘DPORMPZO’ is disclosed, characterized by large, vivid orange flowers, dark green foliage, and a semi-trailing habit. Plants are well-branched. The new variety is a Portulaca, typically produced as an ornamental plant.