Hydrangea Strada Cultivar Black Stems Frost Resistance
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Solution Overview
Problem
Existing Hydrangea cultivars lack improved flower colors, black stem color, frost resistance, stem strength, and mold resistance, particularly against Botrytis.
Innovation Solution
The development of a new Hydrangea cultivar 'Strada' with black stems, red/white bi-colored flowers, and enhanced resistance to frost and mold, achieved through a breeding program combining seedling G6 and 'Mars', showcasing distinct characteristics such as stem strength and disease tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional Hydrangea cultivars are used, then green stem color is present, but black stem color is not achieved
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic traits that result in black stem coloration. The breeding program systematically changed the color parameter of the stem from green (conventional) to black (novel) through controlled crosses and selection of offspring exhibiting the desired pigmentation trait.
2Shape
If conventional Hydrangea cultivars are used, then standard flower colors are present, but improved flower colors are not achieved
Solution Approach 1:
The patent changes the flower color parameter from standard conventional colors to improved novel colors through systematic breeding. The breeding program tracked and selected for specific color traits in offspring, achieving novel flower colorations that differ from parent plants and conventional cultivars.
Solution Approach 2:
The breeding program incorporated feedback mechanisms by evaluating offspring for desired color traits and selecting only those meeting specific color criteria for further breeding. This feedback loop ensured that novel color characteristics were consistently achieved and maintained across generations.
3Reliability
If conventional Hydrangea cultivars are used, then frost resistance is not improved, but 'Strada' exhibits enhanced frost resistance
Solution Approach 1:
The patent changed the reliability parameter by selecting for frost resistance traits in the breeding program. Offspring exhibiting superior frost tolerance compared to parent plants were selected and propagated, resulting in the 'Strada' cultivar with enhanced frost resistance relative to conventional Hydrangea varieties.
4Reliability
If conventional Hydrangea cultivars are used, then mold resistance is not improved, but 'Strada' exhibits mold resistance
Solution Approach 1:
The patent changed the reliability parameter by selecting for mold resistance traits, particularly against Botrytis. The breeding program evaluated offspring for disease resistance and selected those exhibiting superior tolerance, resulting in the 'Strada' cultivar with enhanced mold and Botrytis resistance compared to conventional varieties.
5Strength
If conventional Hydrangea cultivars are used, then stem strength is not improved, but 'Strada' exhibits enhanced stem strength
Solution Approach 1:
The patent changed the strength parameter by selecting for stem strength traits in the breeding program. Offspring exhibiting stronger, more rigid stems compared to parent plants were selected and propagated, resulting in the 'Strada' cultivar with enhanced stem strength and structural integrity.
Data Source
AI summary
A new and distinct Hydrangea plant having red/white-colored flowers and black-colored, strong stems.