Coreopsis MVNC1904 Cultivar Traits and Breeding

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Solution Overview

Problem

Existing Coreopsis grandiflora cultivars lack early flowering, dependable perennial habits, abundant flowers, healthy foliage, and resistance to powdery mildew, with limited heat and humidity tolerance.

Innovation Solution

The development of the new cultivar 'MVNC1904' with a compact habit, long flowering period, cherry red inflorescences with yellow margins, high resistance to powdery mildew, and tolerance to heat and humidity, achieved through asexual propagation by stem cuttings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing Coreopsis grandiflora cultivars are used, then they can be grown in landscapes and containers, but they lack early flowering, dependable perennial habits, abundant flowers, healthy foliage, and resistance to powdery mildew

Engineering Contradiction:

Improvedependable perennial habits and powdery mildew resistanceVSAvoidheat and humidity tolerance

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by selecting and breeding for specific genetic traits that alter the plant's physiological parameters. The new cultivar 'MVNC1904' exhibits changed parameters including early flowering time, extended flowering duration, increased flower abundance, improved foliage health, and enhanced resistance to powdery mildew through systematic breeding programs that modify genetic parameters to achieve multiple desirable traits simultaneously

Inventive Principle:

Principle #35Parameter changes

2Duration of action of moving object

If the breeding program selects for early flowering and abundant flowers, then flowering period is extended, but plant habit compactness must be maintained

Engineering Contradiction:

Improveflowering periodVSAvoidplant habit compactness

Core Design Contradiction:

Duration of action of moving objectVSShape

Solution Approach 1:

The patent applies local quality by differentiating traits in different parts of the plant. The cultivar 'MVNC1904' exhibits compact overall plant habit while simultaneously producing abundant large inflorescences. The breeding program selectively enhances flower production in the inflorescence regions while maintaining compact growth in the vegetative portions, achieving localized optimization of both compactness and flowering abundance

Inventive Principle:

Principle #3Local quality

3Object-affected harmful factors

If resistance to powdery mildew is enhanced, then foliage health is improved, but tolerance to heat and humidity must also be increased

Engineering Contradiction:

Improvepowdery mildew resistanceVSAvoidheat and humidity tolerance

Core Design Contradiction:

Object-affected harmful factorsVSTemperature

Solution Approach 1:

The patent applies composite materials by combining multiple genetic traits into a single integrated cultivar. The new cultivar 'MVNC1904' composite together several selected traits including powdery mildew resistance, heat tolerance, and humidity tolerance through breeding programs. This creates a genetically composite plant that simultaneously exhibits multiple stress resistances and adaptabilities that were previously separate traits in different cultivars

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUSPP35403P2Coreopsis plant named ‘MVNC1904’

Publication Date: 2023.09.26 MARCO VAN NOORT BREEDING BV

AI summary

A new cultivar of hybrid Coreopsis plant named ‘MVNC1904’ that is characterized by its compact, plant habit, its long flowering period from late spring to early autumn in The Netherlands (commences early in the season), its inflorescences with ray florets that are cherry red in color with yellow margins, its resistance to powdery mildew, its high tolerance to heat and humidity, and its healthy foliage that maintains its bright green appearance.