Hydrangea BC7.14 Cultivar Compact Growth and Blue Pigmentation
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Solution Overview
Problem
Current Hydrangea macrophylla cultivars lack compact, attractive inflorescences with small sepalous florets and effective aluminum-induced blue pigmentation, which are stable across generations and resistant to cooler conditions.
Innovation Solution
The development of Hydrangea macrophylla 'BC7.14', a new cultivar resulting from a controlled cross between 'Venedig' and 'LK49', exhibiting compact growth, attractive sepal pigmentation, and resistance to cooler conditions, achieved through asexual reproduction and soil treatment with aluminum to enhance blue pigmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional Hydrangea macrophylla cultivars are grown without controlled breeding, then they exhibit variable growth patterns and inflorescence characteristics, but they lack stable compact growth with small sepalous florets and consistent blue pigmentation
Solution Approach 1:
The invention applies preliminary action by performing controlled cross-breeding between specific parent plants ('Venedig' and 'LK49') to pre-establish the desired traits of compact growth and small sepalous florets before commercial propagation. This preliminary genetic selection ensures stability of these characteristics across generations, eliminating the need for repeated selection processes in commercial production.
Solution Approach 2:
The invention utilizes parameter changes by treating the soil with aluminum to alter the pH and chemical composition, which directly changes the pigmentation parameter of the sepals from pink to blue. This chemical parameter modification provides consistent blue pigmentation that is stable across different growing conditions and generations.
2Ease of manufacture
If Hydrangea macrophylla is grown in standard soil conditions, then it exhibits natural pigmentation, but it fails to produce the attractive blue pigmentation desired for commercial varieties
Solution Approach 1:
The invention applies parameter changes by modifying the soil's chemical parameters through aluminum treatment. This changes the soil pH and aluminum availability, which in turn alters the pigmentation parameter of the plant from natural pink to attractive blue. The method provides an easy, controllable way to achieve desired pigmentation without requiring complex genetic modifications.
3Shape
If conventional cultivars are used, then they may have larger florets, but they lack compact inflorescences with small sepalous florets that are commercially attractive
Solution Approach 1:
The invention applies preliminary action by selecting and cross-breeding parent plants with specific morphological traits - 'Venedig' providing compact growth habit and 'LK49' providing small sepalous florets. This preliminary selection and crossing establishes the desired inflorescence shape and floret size characteristics before commercial propagation, ensuring consistent commercial attractiveness.
4Reliability
If plants are grown without resistance to cooler conditions, then they may thrive in warm climates, but they are damaged by conditions in commercial coolers during storage and transport
Solution Approach 1:
The invention applies preliminary action by incorporating cold resistance traits through controlled cross-breeding with parent plant 'LK49' before commercial propagation. This preliminary genetic selection ensures that the resulting cultivar has inherent resistance to cooler conditions, protecting it from damage during storage and transport in commercial coolers without requiring post-planting interventions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Hydrangea macrophylla 'BC7.14' demonstrates stable, compact growth with attractive blue-pigmented sepals, improved commercial characteristics, and resistance to cooler conditions, maintaining its distinguishing traits through multiple generations.
Implementation Method 1
The variety 'BC7.14' has pigmented sepals, and is preferably grown in soil conditions treated with aluminum to produce blue pigmentation.
Data Source
AI summary
A new and distinct cultivar of Hydrangea macrophylla (Thunb.) named ‘BC7.14’ originated as a controlled cross between varieties. The cultivar ‘BC7.14’ can be blue or red depending on the acidity of the soil and the presence of aluminum. The variety ‘BC7.14’ has relatively compact, attractive inflorescences with relatively small sepalous florets, distinct sepal pigmentation and good commercial characteristics. When grown in the presence of aluminum, the upperside of the sepals is primarily R.H.S. 94 A (violet-blue group) and 86 B (violet group), the underside of the sepals is R.H.S. 93 D (violet-blue group) and 86 C violet group).