Gamma-Induced Orange Ray-Florets in Chrysanthemum Cultivar
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Solution Overview
Problem
Existing chrysanthemum cultivars lack diversity in flower color, particularly in ray-florets, which limits their aesthetic appeal and market variety.
Innovation Solution
A new cultivar, 'Zanmumadore Orange', is developed through gamma radiation of unrooted cuttings of the parent plant 'Zanmumadore', resulting in orange-colored ray-florets, distinct from the parent's pink color, achieved by irradiation and subsequent propagation in a controlled environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gamma radiation is applied to unrooted cuttings to induce color mutation, then flower color diversity is improved, but the complexity of the breeding process increases
Solution Approach 1:
The patent applies gamma radiation at a specific dose (15Gy) to induce mutations in the parent plant cuttings, changing the physical parameter of radiation exposure to achieve color variation. This parameter change approach allows systematic induction of mutations while controlling the intensity through dosage selection.
Solution Approach 2:
The patent converts the potentially harmful effect of gamma radiation into a beneficial outcome by using controlled irradiation to induce desirable color mutations. The radiation, which could be damaging, is applied at a controlled dose to create the desired orange color phenotype in the ray-florets.
2Productivity
If natural mutation is used to obtain color variants, then the breeding process is simple, but the rate of obtaining new color variants is low
Solution Approach 1:
The patent changes the parameter of mutation induction from natural, random occurrence to controlled gamma radiation exposure. This parameter change accelerates the mutation rate significantly, allowing the breeding program to obtain color variants much faster than waiting for natural mutations.
Solution Approach 2:
The patent performs preliminary action by irradiating the cuttings before planting to induce mutations in advance. This preliminary mutation induction ensures that when the plants are grown, the color variants are already present, eliminating the need to wait for spontaneous mutations to occur naturally.
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 new cultivar 'Zanmumadore Orange' exhibits stable orange ray-florets, enhancing flower color diversity and aesthetic appeal, with medium-sized blooms and a five-week blooming period, maintaining characteristics through successive propagations.
Implementation Method 1
unrooted cuttings of the parent plant were irradiated in April 2014 at Ziekenhuis, Rotterdam, the Netherlands, with gamma radiation at a dose of 15Gy
Data Source
AI summary
A chrysanthemum plant named ‘Zanmumadore Orange’ characterized by its medium sized blooms with bronze ray florets and dark centers and prolific branching; natural season flowering date October 2 (week 41); blooming for a period of 5 weeks.