New Guinea Impatiens SAKIMP041 Hybridization for Compact Habit and Trait Stability

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Solution Overview

Problem

There is a need for a new variety of New Guinea Impatiens (Impatiens×hybrida hort.) that combines bright flower color, compact habit, and a strong root system, which existing varieties fail to consistently deliver in terms of stability and propagation.

Innovation Solution

The development of the 'SAKIMP041' variety, resulting from an interspecific hybridization between 'H-10HA' and 'NH-214C-8HD' lines, which exhibits light purple flowers with white centers and a compact habit, and is stable through successive generations of asexual propagation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If existing New Guinea Impatiens varieties are used, then they may display bright flower color, but they fail to consistently maintain compact habit and strong root system across generations

Engineering Contradiction:

Improvetrait stabilityVSAvoidconsistent delivery of desired traits

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The patent applies preliminary action by performing hybridization between specifically selected parental lines ('H-10HA' and 'NH-214C-8HD') before propagation, thereby pre-establishing the desired trait combination of compact habit, bright flower color, and strong root system in the F1 generation. This preliminary genetic combination ensures trait stability across successive generations of asexual propagation.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If a new variety is developed through hybridization, then desired traits can be combined, but the propagation and stabilization process requires extensive time and evaluation

Engineering Contradiction:

Improvetrait combinationVSAvoiddevelopment time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies self-service by utilizing asexual propagation through shoot-tip cuttings, which allows the F1 hybrid plants to reproduce true-to-type without requiring further hybridization or selection steps. The plants self-maintain their genetic composition and desired trait combination across generations, significantly reducing development time compared to sexual reproduction methods.

Inventive Principle:

Principle #25Self-service

3Volume of moving object

If compact habit is selected for, then plant size is reduced, but this may compromise overall plant vigor and root system development

Engineering Contradiction:

Improveplant sizeVSAvoidroot system strength

Core Design Contradiction:

Volume of moving objectVSStrength

Solution Approach 1:

The patent applies local quality by selectively evaluating and choosing parental lines with specific local traits: 'H-10HA' contributes compact above-ground habit while 'NH-214C-8HD' contributes strong root system characteristics. The hybrid combines these localized strengths, achieving compact plant size without compromising root system strength, as each parent line's favorable local trait is preserved in the offspring.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20170290234P1New Guinea Impatiens Plant Named 'SAKIMP041'

Publication Date: 2017.10.05 SAKATA SEED CORP

AI summary

An Impatiens plant particularly distinguished by having light purple flowers with white centers, and a compact habit, is disclosed.