Coreopsis MVNC1906 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, particularly in high heat and humidity conditions.

Innovation Solution

Development of the new cultivar 'MVNC1906' with compact growth, long flowering period, light yellow inflorescences with dark red centers, high powdery mildew resistance, and heat and humidity tolerance, achieved through open pollination and stable 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, but they lack early flowering, dependable perennial habits, abundant flowers, healthy foliage, and resistance to powdery mildew

Engineering Contradiction:

Improveperennial habit reliabilityVSAvoidadaptability to disease and environmental conditions

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by selecting and breeding plants with specific genetic traits that alter key parameters: flowering time (early spring), disease resistance (powdery mildew), foliage health, and perennial reliability. Through controlled breeding and selection, the cultivar 'MVNC1906' exhibits improved values for these parameters compared to existing cultivars, resolving the contradiction between reliability and adaptability.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If existing Coreopsis grandiflora cultivars are used, then they can produce flowers, but they do not produce abundant large inflorescences with prolonged flowering period

Engineering Contradiction:

Improvequantity of inflorescencesVSAvoidflowering period duration

Core Design Contradiction:

Quantity of substanceVSDuration of action of moving object

Solution Approach 1:

The patent changes the quantitative parameters of flower production by selecting parent plants and offspring with superior traits for inflorescence abundance, size, and flowering duration. The resulting cultivar 'MVNC1906' demonstrates increased quantity of inflorescences and extended flowering period from spring through fall, directly addressing the contradiction between quantity and duration of floral display.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If existing Coreopsis grandiflora cultivars are used, then they can be grown in various conditions, but they show poor resistance to powdery mildew and low tolerance to heat and humidity

Engineering Contradiction:

Improveresistance to powdery mildewVSAvoidheat and humidity tolerance

Core Design Contradiction:

Object-affected harmful factorsVSTemperature

Solution Approach 1:

The patent applies parameter changes by selecting plants with genetic resistance to powdery mildew and tolerance to heat and humidity. Through breeding programs and environmental testing, cultivar 'MVNC1906' exhibits improved resistance parameters against fungal diseases and improved tolerance parameters for high temperature and humidity conditions, resolving the contradiction between disease resistance and environmental tolerance.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP35140P2<i>Coreopsis </i>plant named ‘MVNC1906’

Publication Date: 2023.04.25 MARCO VAN NOORT BREEDING BV

AI summary

A new cultivar of hybrid Coreopsis plant named ‘MVNC1906’ that is characterized by its neat and compact (50 cm in height) plant habit with stems that are similar in length, its long flowering period from late spring to early autumn in The Netherlands (commences early), its inflorescences with ray florets that are light yellow in color with dark red centers, its abundance of inflorescences that are large in size, its resistance to powdery mildew, its high tolerance to heat and humidity, and its healthy foliage that maintains its bright green appearance.