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"Low Level Revision 1 1.3 1.3.3 |
Drs. S.C.
Sheppard and P.J. Regitnig report (1987) on extensive research on the stimulating hormetic
effect on plant growth: "Irradiation increased the yield and value of some
vegetable and field crops. Research on plants performed supporting commercial application
on the stimulatory effects of radiation on plants show statistically significant hormesis
responses in a number of vegetable and field crops." Dr. P.C. Kesavan of the Bhabha Atomic Research Centre, Trombay,
Bombay, India reports (1997) on plant experiments that: There was no difference in
the frequency of somatic mutations in stamens following dose-rates of 0.03 mR/hr
(control), 0.08, 0.16, 0.32, 0.65 and 1.30 for 280 days, with a total exposure of 0.201 R
for the control, and 8.736 R for the maximally exposed groups. The somatic mutation
frequencies for control and maximally exposed groups were 2.77 +/- 0.706 and 3.63 +/-
0.819 respectively. "It is evident that a 'linear, no threshold' relationship between
the frequency of somatic mutations in the stamen hairs of Tradescantia and chronically
accumulated total dose of 8.74 cGy does not exist." |
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