Hybrid Pumpkin HMX6724 Marker-Assisted Selection

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Solution Overview

Problem

Current pumpkin breeding techniques face challenges in developing stable, high-yielding hybrids with improved fruit appearance, size, eating and processing qualities, and agronomic traits, as existing methods struggle to consistently combine desirable parental traits effectively.

Innovation Solution

The development of a novel hybrid pumpkin plant, HMX6724, along with methods for its propagation, including seed production, tissue culture, and introduction of desired traits through backcrossing and New Breeding Techniques, such as CRISPR/Cas system, to achieve specific characteristics like disease resistance and improved nutritional quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional pumpkin breeding techniques are used, then fruit yield and quality can be improved, but the ability to consistently combine desirable parental traits is insufficient

Engineering Contradiction:
Improvefruit yieldVSAvoidconsistency of combining parental traits
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent employs molecular marker-assisted selection to change the parameter of trait selection from phenotypic observation to genotypic detection. By using DNA markers linked to desirable traits, breeders can reliably identify and combine specific parental traits in hybrid pumpkins, resolving the inconsistency in trait combination while maintaining high yield and quality.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If molecular marker-assisted selection is implemented, then trait combination reliability is improved, but breeding process complexity increases

Engineering Contradiction:
Improvetrait combination consistencyVSAvoidbreeding process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces molecular markers as intermediaries between parental traits and selection decisions. These DNA markers serve as detectable proxies for desirable traits, allowing breeders to screen parental lines and select combinations with high reliability without requiring complex phenotypic evaluation of multiple traits simultaneously, thus managing process complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If hybrid pumpkin HMX6724 is developed with multiple improved traits, then fruit quality and disease resistance are enhanced, but breeding time and resource investment increase

Engineering Contradiction:
Improvedisease resistanceVSAvoidbreeding development time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-characterizing parental lines using molecular markers before hybridization. By identifying and selecting parental lines that carry specific disease resistance genes and desirable traits through marker screening, the breeding process is accelerated because the desired traits are already known to be present in the parental genomes, eliminating the need for lengthy field testing and trial-and-error breeding.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10631493B2Hybrid pumpkin plant named HMX6724
Publication Date: 2020.04.28 HM CLAUSE

AI summary

A novel hybrid pumpkin plant, designated HMX6724 is disclosed. The invention relates to the seeds of pumpkin hybrid HMX6724, to the plants and plant parts of hybrid pumpkin HMX6724, and to methods for producing a pumpkin plant by crossing the hybrid pumpkin HMX6724 with itself or another pumpkin plant.