Verbena hybrida 'Lan Reda07' Breeding for Compact Growth and Mildew Tolerance

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Solution Overview

Problem

Current verbena cultivars lack a compact, vigorously branching variety with red flowers and tolerance to powdery mildew, which limits their versatility and disease resistance in horticultural applications.

Innovation Solution

The development of Verbena hybrida 'Lan Reda07', which combines the red flower color of 'Lan Redtwo' with the purple flowered '1579-2' to create a compact, free-branching cultivar with enhanced disease tolerance to powdery mildew, suitable for containers and hanging baskets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If current verbena cultivars are used, then they have basic growth and flowering characteristics, but they lack compact growth habit and vigorous branching

Engineering Contradiction:

Improvegrowth habitVSAvoidhorticultural versatility

Core Design Contradiction:

ShapeVSAdaptability or versatility

Solution Approach 1:

The patent combines traits from two parent cultivars: 'Lan Redtwo' (providing red flower color) and '1579-2' (providing compact growth habit and vigorous branching). This merging of parental characteristics creates a new cultivar that simultaneously achieves compact low-growing habit, vigorous branching, and red flowers, resolving the contradiction between growth form and horticultural versatility.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If current verbena cultivars are used, then they have basic disease resistance, but they lack tolerance to powdery mildew

Engineering Contradiction:

Improvedisease resistanceVSAvoidpowdery mildew susceptibility

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful effect of powdery mildew susceptibility into benefit by selecting and breeding for resistance. The new cultivar 'Lan Reda07' was specifically bred to tolerate powdery mildew, transforming what was previously a vulnerability into a strength, thereby improving reliability and reducing harm from this specific pathogen.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Duration of action of moving object

If current verbena cultivars are used, then they have standard flowering periods, but they lack continuous flowering from spring to fall

Engineering Contradiction:

Improveflowering durationVSAvoidcontinuous flowering capability

Core Design Contradiction:

Duration of action of moving objectVSProductivity

Solution Approach 1:

The patent achieves continuous flowering from spring through fall by combining parental traits that promote extended bloom periods. The new cultivar maintains continuous productive action (flowering) across multiple seasons, eliminating gaps in flower production and thereby maximizing duration and productivity of the flowering phase.

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUSPP18986P2Verbena plant named `Lan Reda07`

Publication Date: 2008.06.24 SYNGENTA CROP PROTECITON AG

AI summary

A verbena cultivar particularly distinguished by its red-colored flowers with vigorous and free-branching multiple secondary lateral branches, low and outwardly spreading growth habit, and tolerance to powdery mildew is disclosed.