Mandevilla hybrida Sunpa 421 Compact Habit and Double Flowers
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Solution Overview
Problem
There is a need for a new and distinct cultivar of Mandevilla hybrida that exhibits unique characteristics such as compact growth, early and continuous flowering, and specific flower morphology to enhance horticultural and ornamental value.
Innovation Solution
The development of Mandevilla hybrida 'Sunpa 421' with upright and compact plant habit, vigorous growth, freely branching, and double-type purplish pink flowers, which differs from existing cultivars like 'Sunpa 4411' in compactness, internode length, flower type, and petal characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If Mandevilla hybrida is bred for vigorous growth and continuous flowering, then ornamental value and flowering period are improved, but plant size and internode length increase making the plant less compact
Solution Approach 1:
The patent applies parameter changes by selecting and fixing specific genetic parameters through controlled breeding to achieve the desired balance. The breeder selected plants with specific genetic combinations that simultaneously provide vigorous growth (for continuous flowering) and compact habit (shorter internodes), thereby changing the parameter values to satisfy both requirements.
2Shape
If Mandevilla hybrida is bred for double-type flowers, then ornamental value is improved, but genetic complexity and breeding difficulty increase
Solution Approach 1:
The patent applies preliminary action by pre-selecting parent plants that carry the double-flower trait and systematically crossing them to establish a stable line. The breeder performed preliminary selection of plants with double flowers, maintained these lines through controlled propagation, and only after establishing stability did the variety become available for commercial production, thereby managing the breeding complexity.
3Loss of time
If Mandevilla hybrida is bred for early flowering, then commercial value is improved, but growth period and plant maturity are reduced
Solution Approach 1:
The patent applies parameter changes by adjusting the genetic parameters controlling flowering time and maturity. The breeder selected for early flowering genes while simultaneously maintaining genes for adequate plant maturity and vigor, achieving a new parameter combination that allows early flowering without compromising plant health or stability.
Data Source
AI summary
A new and distinct cultivar of Mandevilla plant named ‘Sunpa 421’, characterized by its upright and compact plant habit; vigorous growth habit; freely branching habit; early and freely flowering habit; long flowering period; double-type flowers that are purplish pink in color; and good garden performance.