Abstract:Franco, José G. Influence of different doses of gamma radiation (Cobalt60) in soybean Glycine max (L.) aiming the increase in the productivity. 2018. 66p. Tese (Doutorado em
“…But in the parameter mean number of healthy seeds no significant differences were observed when compared to 25.0 Gy dose. These results are similar to those of when irradiated seeds of soya with doses of 25, 50 and 75 Gy (Franco, 1999;Franco, et al, 2015 andFranco, 2018). According to (Luckey, 1980 andWiendl et al, 1995), low doses of radiation have the ability to stimulate bio-systems reversing the effects with increasing dosage.…”
“…But in the parameter mean number of healthy seeds no significant differences were observed when compared to 25.0 Gy dose. These results are similar to those of when irradiated seeds of soya with doses of 25, 50 and 75 Gy (Franco, 1999;Franco, et al, 2015 andFranco, 2018). According to (Luckey, 1980 andWiendl et al, 1995), low doses of radiation have the ability to stimulate bio-systems reversing the effects with increasing dosage.…”
“…The irradiation of plants and seeds with low doses of ionizing radiation can promote acceleration or increase germination, larger plant growth, increased agricultural production, etc. The gamma radiation doses used to achieve these benefits are not enough to cause changes in the gene pool of irradiated organism, being these low radiation doses applied on plants calls of hormesis [2,3,4,5,6,7].…”
Due to difficulties of vegetative propagating of any pants, many tests were performed with ionizing radiation aiming the modification of the characteristics of the plants for obtaining of the improved genotypes and of smaller size. Rootstock “Espada” cultivar, were used to obtain mango seedlings of “Tommy” cultivar. The cuttings were irradiated with different doses of gamma radiation: 0 (control), 2.5, 5.0, 7.5 and 10.0 Gy, in a source of Cobalt-60 type Gammacell-220, installed in the Center for Nuclear Energy in Agriculture, CENA-USP. After irradiation, was performed the grafting type cleft graft. Was made the first evaluation of height of the plants from the budding grafting after 24 months. Data were subjected by statistic program (SAS) and the means were compared by Tukey test (p <0.05). From the results obtained can be concluded that the doses of 2.5 Gy stimulated growth of the plants and the lethal dose was 10.0 Gy because don’t have development of plants.
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