Dwarf Buddleja Cultivar with Male and Female Sterility
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Solution Overview
Problem
Current butterfly bush cultivars lack a compact, spreading, male and female sterile variety with attractive red-purple flowers that maintain consistent characteristics across varying growing conditions.
Innovation Solution
The development of 'Pink Micro Chip', a dwarf, spreading Buddleja cultivar resulting from a controlled cross between 'Lilac Chip' and 'Miss Molly', exhibiting male sterility, female sterility, and red-purple flowers, propagated through softwood to semi-hardwood stem cuttings, which maintains its unique traits under different climatic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional butterfly bush cultivars are grown, then they produce flowers throughout the growing season, but they achieve tall stature and vigorous growth that is difficult to control in landscape settings
Solution Approach 1:
The patent applies parameter changes by modifying the vigor parameter through selective breeding to create a dwarf cultivar. 'Pink Micro Chip' exhibits low vigor and dwarf stature (typically under 1 meter tall) compared to conventional tall butterfly bushes, while maintaining consistent growth habits and flowering characteristics across varying growing conditions through controlled hybridization of specific parent cultivars.
2Ease of manufacture
If fertile butterfly bush cultivars are planted, then they produce seeds for propagation, but they require pollinators and risk uncontrolled seed set that may lead to invasive behavior
Solution Approach 1:
The patent applies the extraction principle by removing the reproductive organs (stamens and pistils) from the flower buds before they mature. This emasculation process eliminates seed production capability while preserving the ornamental flowering characteristics, allowing propagation only through controlled vegetative methods such as cuttings, thereby preventing uncontrolled seed set and invasive behavior.
3Length of moving object
If dwarf butterfly bush varieties are developed, then they provide compact landscaping options, but they may lack the vigorous flowering display of taller cultivars
Solution Approach 1:
The patent applies local quality by concentrating flowering resources in the compact dwarf form. 'Pink Micro Chip' produces dense clusters of flowers along its branches, with flower quality and color intensity (pink to purple hues) optimized for the dwarf habit. This creates a proportionally abundant flower display that is characteristic of the cultivar's compact stature, rather than attempting to replicate the sheer volume of flowers found in tall cultivars.
4Object-generated harmful factors
If male and female sterile varieties are created, then seed production is eliminated for cleaner landscapes, but natural propagation through seeds is prevented
Solution Approach 1:
The patent applies the intermediary principle by using vegetative propagation (stem cuttings) as a mediator between the sterile plant and new plants. Since seeds cannot be produced, rooted cuttings serve as the intermediary method for multiplication, allowing clean seedless landscapes while maintaining efficient propagation through asexual reproduction of the desired sterile genotype.
Data Source
AI summary
Buddleja ‘Pink Micro Chip’ is a new and distinct variety of butterfly bush that has the following unique combination of desirable features that are outstanding in a new variety. ‘Pink Micro Chip’ has low vigor resulting in very dwarf stature. ‘Pink Micro Chip’ is asexually propagated using softwood or semi-hardwood cuttings. ‘Pink Micro Chip’ demonstrates a dense, spreading growth habit. ‘Pink Micro Chip’ is lacking male flower parts (anthers), resulting in male (pollen) sterility. ‘Pink Micro Chip’ produces female structures that are essentially sterile, resulting in lack of seed formation. ‘Pink Micro Chip’ has red-purple flower color.