Hydrangea LC NO22 Breeding for Stable Red-Purple Sepals
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Solution Overview
Problem
There is a need for a new Hydrangea arborescens cultivar that offers unique horticultural characteristics such as sturdy stems, compact plant size, high floriferousness, and distinctive red-purple sepals that retain color throughout the flowering period.
Innovation Solution
The cultivar 'LC NO22' is developed through a planned breeding program, exhibiting sturdy stems, medium compact plant size, high floriferousness, and red-purple sepals that maintain color from June to September.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a new Hydrangea cultivar is developed through breeding, then unique horticultural characteristics (sturdy stems, compact size, high floriferousness, red-purple sepals) are achieved, but the complexity of the breeding program and time required increases
Solution Approach 1:
The breeding program was conducted with preliminary planning and systematic approach, crossing two unnamed proprietary seedlings in 2014 with specific breeding goals. The preliminary selection and controlled crossing ensured that the desired traits (sturdy stems, compact size, high floriferousness, red-purple sepals) would be stabilized in the resulting cultivar 'LC NO22'.
2Stability of the object's composition
If the cultivar is selected from seedlings developed from crossing, then unique characteristics are stabilized and reproduced true to type, but the time required for selection and propagation increases
Solution Approach 1:
The crossing was performed preliminarily in 2014 with the intent of selecting specific traits. The seedlings were grown and evaluated over subsequent years (2015-2019) to identify those exhibiting the desired stable characteristics. This preliminary crossing followed by systematic selection ensured genotype stability while managing the time investment through focused evaluation.
Solution Approach 2:
The selection process involved continuous feedback evaluation of seedling characteristics over multiple years. The inventor assessed each generation for the target traits (sturdy stems, compact size, floriferousness, sepal color) and selected only those meeting the criteria for further propagation. This feedback mechanism ensured that only genotypes with stable desired characteristics were reproduced.
3Productivity
If the cultivar exhibits longer flowering period and darker green foliage compared to parents, then horticultural value is enhanced, but the specificity of the cultivar makes it harder to compare with existing cultivars
Solution Approach 1:
The cultivar 'LC NO22' exhibits enhanced local qualities compared to its parents and commercial comparators. Specifically, the flowering period is extended (June to September, approximately 8 weeks), and the foliage displays darker green coloration. These localized enhancements in specific traits (flowering duration and foliage color intensity) provide distinct horticultural value while maintaining overall plant structure similarity to known cultivars, making differentiation manageable.
Data Source
AI summary
A new and distinct cultivar of Hydrangea arborescens plant named ‘LC NO22’ is disclosed, characterized by sturdy stems on medium sized, compact plants. Plants are highly floriferous and flower from June to September. The sterile flowers have ornamental sepals that are red-purple from the beginning to the end of the flower period. The new variety is a Hydrangea, typically produced as an outdoor ornamental plant.