Abstract
IT is considered that the ammonia produced by the hydrolysis of urea in the soil damages the roots of plants. Recently, Cooke1 reported that at least one other factor may be operative in urea toxicity. Weber and Tanford2 demonstrated that 2-chloroethanol strengthened the intramolecular hydrogen-bonding of ribonuclease and urea possessed the opposite character. The increase of resistance to high salt concentration by the seed treatment with dilute 2-chloroethanol solution was found by Miyamoto3. The present investigation deals with the antagonistic effect of urea and 2-chloroethanol on the resistance when their dilute solutions are applied to the wheat seed treatment.
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References
Cooke, I. J., Nature, 194, 1262 (1962).
Weber, R. E., and Tanford, C., J. Amer. Chem. Soc., 81, 3255 (1959).
Miyamoto, T., Physiol. Plant. (in the press).
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MIYAMOTO, T. Antagonistic Effect of Urea and 2-Chloroethanol on the Resistance to High Salt Concentration in Wheat Seedlings. Nature 196, 491–492 (1962). https://doi.org/10.1038/196491b0
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DOI: https://doi.org/10.1038/196491b0
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