Rhaphanus sativus seeds are often used to test toxic compounds of medicinal or other plants. Easy germination and throughout year availability are common factors for their selection. But what is reason of their greater sensitivity towards toxins compared to other seeds? How one can explain that radish seed germination and seedling inhibition can explain toxicity in general? They are reported to be most sensitive seeds towards toxins, why?
Sensitivity is context dependent. In wet filter paper small disk and pestri plate gels sandwiches Rafanus s is well sensitive , but in many other tests freshwater aquatic plants are appied as in Rorippa masturtium-aquaticum, the water cress, if you like to follow plant development on extendet times.
Yes I'm exactly related to germination tests in petri plate and want to know that why radish seeds and not some others?
You can use other seeds also - but model systems have advantages in basic research and results are applicable to other related systems..
Warman in Compost science and utlization, Taylor and Francis pub 2013 declares that this was a suggestion of CCME 1996, but in the same paper finds these tests not suffciently sensitive to toxicity of composts, eiter water cress or radishes or else.
In my experience, radish seeds were second in susceptibility after tomato in fungal toxins test. But, it was easier to work with obtained radish seedlings in terms of biometry and biochemistry.
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