3 research outputs found
Sobre la valuaciĂłn de bonos corporativos en Argentina
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Gamma radiosensitivity study on wheat (Triticum turgidum ssp. durum)
Fifty wheat seed variety (var.) CIRNO C2008 were gamma irradiated with 100, 200, 300, 400, 500, or 600âGy by using a Cobalt-60 source at 907.39âGy/h, and the nonirradiated seeds were considered the control (M0). A photoperiod of 13âh of darkness (14°C) and 11âh of light (2âh at 18°C, 7âh at 25°C, and 2âh at 18°C) was used for 30 days, in a growth chamber (BJPX-A450; BIOBASE) for quantifying the morphometric traits of the irradiated vs nonirradiated seeds. The germination percentage (from 88.89% in M0 to 77.78% in 600âGy) did not show significant differences among treatments; while the survival percentage (from 100% in M0 to 6.66% in 600âGy) and plant height (from 19.21âcm in M0 to 1.16âcm in 600âGy) showed negative significant (p < 0.05) difference among nonirradiated seeds (M0) and the rest of the treatments. Finally, based on the survival percentage, the calculated lethal dose was 290.6âGy, which will allow obtaining promising wheat mutants. Gamma irradiation is a promising alternative to obtain a greater wheat variability for advanced mutant lines