Verbena DVERCASRED Cultivar Breeding for Early Flowering and Mildew Tolerance

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Solution Overview

Problem

Current Verbena cultivars lack early flowering, trailing growth habit, powdery mildew tolerance, and resistance to low temperatures, which limits their ornamental and commercial applications.

Innovation Solution

The development of the Verbena hybrida cultivar 'DVERCASRED' through controlled breeding, combining traits such as early flowering, trailing habit, high floriferousness, powdery mildew tolerance, and low temperature resistance, achieved through vegetative propagation and selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If traditional Verbena cultivars are used, then they have standard growth habits, but they lack trailing growth habit and early flowering

Engineering Contradiction:

Improveflowering timeVSAvoidgrowth habit

Core Design Contradiction:

SpeedVSShape

Solution Approach 1:

The patent combines multiple desirable traits from different parent plants through controlled breeding. The seed parent 'VE-Z-279' contributed early flowering and floriferousness, while the pollen parent 'VE-11-3901' contributed trailing growth habit and disease resistance. This merging of parental characteristics produced a new cultivar that simultaneously exhibits early flowering, trailing habit, and high flower production.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If traditional Verbena cultivars are used, then they have average disease resistance, but they are sensitive to powdery mildew

Engineering Contradiction:

Improvedisease resistanceVSAvoidpowdery mildew susceptibility

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent utilizes the natural genetic variation present in the parent plants to convert susceptibility to powdery mildew into resistance. The pollen parent 'VE-11-3901' naturally possessed resistance to powdery mildew, and this beneficial trait was transferred to the offspring through selective breeding. The new cultivar now exhibits tolerance to powdery mildew, transforming a previously harmful susceptibility into a beneficial resistance trait.

Inventive Principle:

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

3Strength

If traditional Verbena cultivars are used, then they have standard vigor, but they lack greater vigor and low temperature resistance

Engineering Contradiction:

Improveplant vigorVSAvoidlow temperature tolerance

Core Design Contradiction:

StrengthVSTemperature

Solution Approach 1:

The patent changes the physiological parameters of the Verbena plant through breeding to achieve greater vigor and low temperature resistance. The new cultivar exhibits enhanced growth vigor, increased plant size, and improved tolerance to low temperatures compared to traditional cultivars. This was achieved by selecting and combining parental lines with complementary traits, resulting in offspring with superior physiological performance and environmental adaptability.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP27355P2<i>Verbena </i>plant named ‘DVERCASRED’

Publication Date: 2016.11.08 DANZIGER - DAN FLOWER FARM

AI summary

A new and distinct Verbena cultivar named ‘DVERCASRED’ is disclosed, characterized by a trailing growth habit, early flowering, tolerance to powdery mildew and an abundance of red flowers. Additionally the new variety is tolerant to high temperatures. The new variety is a Verbena, normally produced as an outdoor garden or container plant.