Grevillea juniperina H22 Compact Prostrate Growth Habit

Solution Overview

Problem

Existing Grevillea juniperina varieties lack a compact, low-maintenance ornamental groundcover option with a short plant height and dense, prostrate growth habit suitable for landscaping and mass production.

Innovation Solution

The development of the 'H22' variety of Grevillea juniperina, characterized by a very short mature plant height and prostrate, dense growth habit, achieved through selective breeding and asexual propagation, which maintains stability across generations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If conventional Grevillea juniperina varieties are used, then medium plant height and semi erect growth habit are achieved, but compactness and suitability for groundcover landscaping are insufficient

Engineering Contradiction:

Improveplant heightVSAvoidsuitability for groundcover landscaping

Core Design Contradiction:

Length of moving objectVSAdaptability or versatility

Solution Approach 1:

The invention applies parameter changes by selecting and breeding plants with specific genetic traits that result in dramatically reduced plant height (from medium to 15-30 cm) and altered growth habit (from semi-erect to prostrate). This genetic parameter change creates a new variety optimized for groundcover applications while maintaining the species' inherent drought tolerance and ornamental flower characteristics.

Inventive Principle:

Principle #35Parameter changes

2Length of moving object

If selective breeding is performed to achieve short plant height, then compactness is improved, but breeding time and selection process duration increase

Engineering Contradiction:

Improveplant heightVSAvoidbreeding selection duration

Core Design Contradiction:

Length of moving objectVSLoss of time

Solution Approach 1:

The invention applies preliminary action by conducting systematic selective breeding over multiple years (2005-2008) to pre-establish the desired traits of short height and prostrate habit before commercial propagation. The preliminary selection and evaluation of candidate plants created a stable, true-breeding line that could then be rapidly propagated asexually, reducing future breeding time while maintaining the achieved compactness.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention applies copying through asexual propagation by division, where selected parent plants with desired traits are replicated to produce genetically identical offspring. This copying method maintains the achieved short height and prostrate growth habit across generations without requiring repeated sexual breeding cycles, thereby reducing time loss while preserving the improved plant height characteristics.

Inventive Principle:

Principle #26Copying

3Stability of the object's composition

If asexual propagation by division is used, then genetic stability and trait consistency are maintained, but propagation speed compared to seed propagation may be reduced

Engineering Contradiction:

Improvegenetic stabilityVSAvoidpropagation speed

Core Design Contradiction:

Stability of the object's compositionVSProductivity

Solution Approach 1:

The invention applies copying through asexual propagation by division, where selected parent plants with desired traits are replicated to produce genetically identical offspring. This copying method maintains the achieved short height and prostrate growth habit across generations without requiring repeated sexual breeding cycles, thereby reducing time loss while preserving the improved plant height characteristics.

Inventive Principle:

Principle #26Copying

Data Source

PatentUSPP25191P3Grevillea juniperina plant named `H22`

Publication Date: 2014.12.30 LAYT TODD

AI summary

‘H22’ is a distinctive variety of Grevillea juniperina which is characterized by a very short mature plant height combined with a prostrate and dense growth habit.