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Die Wirkung Ionisierender Strahlen Auf Die Entwicklung Von Heterodera Rostochiensis Und H. Schachtii 1)

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Cysts of the potato root eelworm and the beet eelworm were irradiated by radium for different times up to 196 hours. The radiation dose rate was 400 r/h (r = Roentgen). The spectrum mainly consisted of gamma-rays of 12 and 88 KeV and of neutrons of some MeV. Compared with data for other animals in the literature, the nematodes showed a remarkable resistance to the rays. Treatments of less than 72 hours had no apparent effect. After longer exposure, the hatching of larvae from the cysts of the beet eelworm was reduced whereas in the potato root eelworm many more larvae hatched from irradiated cysts than from untreated ones. In spite of this the development of larvae in both species was retarded and the rate of reproduction reduced. Mutative variations of body size as a consequence of the radiation were not observed.

Affiliations: 1: Institut für Hackfruchtbau, Münster, Westf

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/content/journals/10.1163/187529257x00383
1957-01-01
2016-12-07

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