首页|Effect of Low Doses of Gamma Radiation inTomato Seeds
Effect of Low Doses of Gamma Radiation inTomato Seeds
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Tomato dry seeds of the hybrid "Gladiador" Fl were exposed to low doses of gamma radiation from Co-60 source at 0.509 kGy tax rate in order to study stimulation effects of radiation on germination and plant growth. Eight treatments of different radiation doses were applied as follows: 0 (control); 2.5, 5.0, 7.5, 10.0, 12.5, 15.0, 20.0 Gy. Seed germination as well as green fruits number, harvested fruit number, fruit weight and total production were assessed to identify occurrence of stimulation. Tomato seeds and plants were handled as for usual tomato production in Brazil. Low doses of gamma radiation treatment in the seeds stimulate germination and substantially increase fruit number and total production up to 86% at 10 Gy dose. There are evidencesthat the use of low doses of gamma radiation can stimulate germination and plant production thus, showing hermetic effects.
Gamma radiationhormesistomato.
TONI ANDREAS WIENDL、VALTER ARTHUR
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Centro Energy. Nuclear. Agriculture, - CENA-USP, P.O. Box 96, Av. Centenario, 303 - Piracicaba, 13400-970, Sao Paulo, Brasil
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