Abstract
POTATO root diffusate, which is the liquid obtained by leaching growing potatoes with water, has long been known1 to contain an active factor which causes the larvæ to emerge from eggs contained within cysts of the potato root eelworm, Heterodera rostochiensis. Since the War, considerable research has been carried out in an attempt to ascertain the chemical constitution of the active factor2. At normal room temperature potato root diffusate is extremely unstable; hence the diffusate is stored in refrigerators, where it remains relatively stable for a considerable time.
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References
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Calam, C. T., Raistrick, H., and Todd, A. R., Biochem. J., 45, 513 (1949).
Fenwick, D. W., J. Helminth., 25, 37 (1951).
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HAGUE, N. Concentration of Potato Root Diffusate by Vacuum Distillation. Nature 174, 1018 (1954). https://doi.org/10.1038/1741018a0
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DOI: https://doi.org/10.1038/1741018a0
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