Rudbeckia RUDBR159 Cultivar Breeding for Stem Strength and Compact Height
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Solution Overview
Problem
There is a need for new cultivars of Rudbeckia hirta with compact plant habits and floriferous blooming characteristics that are not met by existing varieties like 'Kissing SmileyZ' and 'Laughing SmileyZ', which lack the desired combination of short plant height, strong stems, and specific inflorescence colors.
Innovation Solution
The development of a new cultivar 'RUDBR159' with a short plant height, well-branched habit, strong stems, and a long flowering period, characterized by yellow-orange ray florets with dark greyed-orange bases, achieved through a breeding program and stabilized via tissue culture propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing Rudbeckia cultivars like 'Kissing SmileyZ' and 'Laughing SmileyZ' are used, then floriferous blooming habits are achieved, but plant height is too tall and stem strength is insufficient
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic traits that result in reduced plant height and increased stem strength. The cultivar 'RUDBR159' exhibits a compact growth habit with shorter internodes and stronger stem structure compared to existing cultivars, achieving the desired parameter transformation through selective breeding programs.
2Duration of action of moving object
If existing Rudbeckia cultivars are used, then blooming is achieved, but the flowering period is not prolonged and inflorescence color is not sufficiently distinctive
Solution Approach 1:
The patent applies local quality by developing inflorescences with specific color characteristics - yellow-orange ray florets with dark greyed-orange bases - that are distinct from other cultivars. This localized color differentiation, combined with selective breeding for extended flowering duration, creates a cultivar with both prolonged blooming and consistent distinctive coloration.
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 cultivar 'RUDBR159' exhibits a unique combination of traits, including a compact growth habit, vigorous growth rate, and prolonged flowering period, making it suitable for landscape use with no observed susceptibility to diseases or pests, and stable propagation through tissue culture.
Implementation Method 1
Asexual propagation of the new cultivar was first accomplished under the direction of the Inventor by tissue culture using meristematic tissue in Heerhugowaard, The Netherlands in January 2018.
Data Source
AI summary
A new cultivar of Rudbeckia plant named ‘RUDBR159’ that is characterized by its well-branched plant habit, its strong stems, its very floriferous blooming habit, its long flowering period, its long flowering period, and its inflorescences with ray florets that are yellow-orange in color and dark greyed-orange at the base.