DIFFERENTIAL KILLING EFFECT IN JUTE BY X-RAYS AND RADIOISOTOPES
Treatments with x rays and BETA rays from P/sup 32/ and S/sup 35/ on dry and pure line seeds of three varieties of Corchorus olitorius L. and two varieties of C. capsularis L. produced differential killing effect. 0ver the range of dosages applied treatments with P/sup 32/ and S/sup 35/ showed lesser killing effect than treatments with x rays. From the counts of survivals at maturity, the LD/sub 50/with x rays was found to lie between 64000 and r0000 r for the varieties of C. olitorius and between 80000 and 90000 r for the varieties of C. capsularis. While the usual relationship of decrease in survival with increase in dosage was established with x rays, treatments with P/sup 32/ and S/ sup 35/ often showed increased survival compared to the control. The differential killing effect of the three mutagens is discussed as a consequence of difference in ion density. The obscure effects of radioisotopes may be due to production of substances reacting in the form of stimulation or protective agents. The differential radiosensitivity of the two species may be due to difference in factors like seed size and thickness of seed coat, which influence the non- genetical effects of irradiation. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-035580
- OSTI ID:
- 4668287
- Journal Information:
- Transactions of the Bose Research Institute (Calcutta) (India), Vol. Vol: 25; Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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