Abstract
IN obtaining data for the two species of watercress for “Biological Flora” accounts, it was found that, whereas the seeds of Nasturtium officinale R.Br. would germinate both in the light and in the dark, those of N. microphyllum Boenningh. ex Rchb.1 would only germinate in the light. This has been checked, as is shown below—there were fifty seeds in each Petri dish and they were kept on moist filter paper at laboratory temperature (about 65° F.).
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References
Airy Shaw, H. K., Kew Bull., No. 1, 39 (1947).
Howard, H. W., and Manton, I., Ann. Bot., N.S., 10, 1 (1946).
Honing, J. A. Genetica, 12, 441 (1930).
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HOWARD, H., LYON, A. Effect of Light on the Germination of Watercress Seeds. Nature 168, 253–254 (1951). https://doi.org/10.1038/168253a0
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DOI: https://doi.org/10.1038/168253a0
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