Tetraploid Hosta Hybrid 'Hands Up' Upright Habit
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Solution Overview
Problem
Existing Hosta hybrids lack strong foliage and vigor, and there is a need for varieties with unique characteristics such as upright habit, thick leaves, and larger flowers that are stable across different environmental conditions.
Innovation Solution
The development of the tetraploid Hosta hybrid 'Hands Up' through colchicine-induced mutation of 'Praying Hands', which exhibits a distinctive upright habit, thick foliage, and larger flowers, achieved through tissue culture propagation and micro-propagation, ensuring stability across generations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional Hosta hybrid varieties are used, then basic foliage characteristics are maintained, but the foliage lacks strength, vigor, and upright habit
Solution Approach 1:
The patent applies colchicine treatment to induce chromosome doubling in Hosta hybrid 'Praying Hands', transforming it from a diploid to a tetraploid cultivar. This parameter change in chromosomal number results in enhanced foliage strength, thicker leaves, more upright habit, and increased overall plant vigor while maintaining stability across environmental conditions
2Strength
If tetraploid mutation is induced through colchicine treatment, then foliage strength and vigor are enhanced, but the propagation process becomes more complex
Solution Approach 1:
The patent performs colchicine treatment during the tissue culture propagation process, specifically applying the chemical agent to dividing root tips or meristematic tissue at a critical early stage. This preliminary action integrates the mutation induction with the existing propagation workflow, avoiding the need for separate complex mutation screening programs
3Stability of the object's composition
If tissue culture propagation is used to multiply the cultivar, then true-to-type reproduction is achieved, but the initial propagation setup requires specialized facilities
Solution Approach 1:
The patent utilizes tissue culture techniques to create multiple identical copies of the tetraploid Hosta cultivar. By propagating through in vitro culture of plantlets or shoot tips, the method produces genetically uniform plants that faithfully reproduce the unique upright habit, thick foliage, and other characteristic traits of the original mutation
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
The 'Hands Up' cultivar demonstrates enhanced vigor, thicker and stronger leaves, and larger flowers compared to its parent, with improved disease resistance and temperature tolerance, while maintaining stability in phenotype across varying environmental conditions.
Implementation Method 1
The new cultivar was discovered as an induced mutation using the known chemical colchicine, of Hosta hybrid 'Praying Hands'
Implementation Method 2
the inventor initiated cultivation in tissue culture, during October of 2008, in a commercial laboratory in Iribov Heerhugowaard, the Netherlands
Data Source
AI summary
A new and distinct Hosta cultivar named ‘Hands Up’ is disclosed, characterized by a distinctive upright plant habit, large flowers, vigorous plant habit and strong foliage, with good resistance to environmental stressors. The near variety is a Hosta, typically used for outdoor ornamental purposes.