Variegated Cornus Cultivar Watashi no Ginga Asexual Propagation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a distinct and stable ornamental evergreen Cornus plant cultivar that exhibits unique characteristics such as variegated leaves, single to double-type flowers, and good cold hardiness, which are not present in existing cultivars like Cornus kousa 'Satomi' and Cornus hongkongensis 'Gekko'.
Innovation Solution
The development of a new Cornus plant cultivar, 'Watashi no Ginga', which is a naturally occurring branch mutation of Cornus hongkongensis ssp. melanotricha, characterized by its upright and spreading habit, vigorous growth, green and yellow-green variegated leaves, and light green to white flower bracts, achieved through asexual reproduction by bud grafting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a new Cornus cultivar is developed with variegated leaves and single to double-type flowers, then ornamental value and visual appeal are improved, but genetic stability and breeding complexity worsen
Solution Approach 1:
The patent uses asexual reproduction through bud grafting to create exact genetic copies of the mutant plant. This copying process preserves the unique variegated leaf pattern and flower characteristics without the complexity of sexual reproduction, ensuring genetic stability while maintaining the ornamental features.
Solution Approach 2:
The invention involves a natural mutation that changed specific parameters of the Cornus plant - specifically the leaf pigmentation pattern (creating variegation) and flower structure (single to double-type). This parameter change occurred naturally and was then propagated through grafting, avoiding complex breeding procedures.
2Adaptability or versatility
If the Cornus plant exhibits vigorous growth and upright spreading habit, then landscaping versatility and adaptability are improved, but control over plant form and size worsens
Solution Approach 1:
The patent describes a plant with segmented growth patterns - upright main stems with outwardly spreading branches. This natural segmentation creates a structured form that provides both versatility in landscaping applications and a degree of form control through the inherent architectural pattern of the plant.
3Ease of manufacture
If the Cornus plant displays green, yellow-green and yellow-colored variegated leaves, then aesthetic appeal is improved, but genetic uniformity and reproduction stability worsen
Solution Approach 1:
Through bud grafting, the patent creates genetically identical copies of the variegated plant. This asexual copying process ensures that the complex variegated leaf pattern with multiple colors (green, yellow-green, yellow) is reproduced exactly, maintaining genetic uniformity despite the complex phenotypic expression.
Solution Approach 2:
The variegated leaves exhibit local quality variations within the same leaf and across different leaves - different sections show different pigmentation patterns. This local variation in color quality creates aesthetic appeal while the overall genetic composition remains uniform and stable through asexual propagation.
Data Source
AI summary
A new and distinct cultivar of Cornus plant named ‘Watashi no Ginga’, characterized by its upright and outwardly spreading plant habit; vigorous growth habit; green, yellow green and yellow-colored variegated leaves; single to double-type flowers that are initially light green in color and becoming white in color with development; and good cold hardiness.