Antibacterial Substances of Coniferous Seedlings at Different Stages of their Development

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IT is well known, that the damping off of coniferous seedlings causes serious damage and in many cases complete destruction up to the appearance of the foliage. Once the cotyledons are fully developed and foliage leaves have failed to appear, complete destruction may be expected. Following the appearance of the foliage leaves the percentage of the damping off is greatly reduced or totally stopped. Nor does the disease appear when it could be expected in the presence of suitable conditions (high temperature, abundant moisture and excessive decomposing organic substances1,2,3,4). Consequently it may be assumed that in these two developmental phases there must exist such a difference in the plant substance which is closely connected with the cause of damping off.

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  1. 1

    Roth, L. F., and Riker, A. J., J. Agric. Res., 67, 273 (1943).

  2. 2

    Vámos, R., Erd˝;, 1, 34 (1954).

  3. 3

    Vaartaja, O., Phytopath., 42, 501 (1952).

  4. 4

    Wright, E., Phytopathol., 47, 658 (1957).

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VAMOS, R., VIDA, L. Antibacterial Substances of Coniferous Seedlings at Different Stages of their Development. Nature 184, 915 (1959) doi:10.1038/184915a0

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