ピーマン種苗の放射線感受性

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  • ピーマン種苗の放射線感受性(農学部門)
  • ピーマン シュビョウ ノ ホウシャセン カンジュセイ
  • Radiosensitivity of seeds and young plants in pepper (Agriculture)

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The study of radiosensitivity is important as the first step in plant breeding by radiation. The present study was carried out to investigate the radiosensitivity of dry pepper (Capsicum annuum L.) seeds and young pepper plants exposed to X- or gamma-rays. Philips deep therapy unit was used for X-irradiation and radiocobalt was used as the source of the gamma-ray. The irradiated seeds were sown immediately. Germination of the irradiated seeds was inhibited by high dosage. All of the seedlings, furthermore, were killed by35kr. of X-ray or 60kr. of gamma-ray. (LD)_<50> in pepper seed is considered to be 20-25kr. of X-ray and 40-50kr. of gamma-ray. For the young plants, 1-2kr. X-irradiation was the most effective, and almost all pollen grains were made abortive by 1kr. irradiation while growth promoting effects were observed at 0.25-0.5kr. irradiation.

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