Genetic improvement of some attributes agronomic in roselle (Malvaceae) with gamma radiation of 60co

In order to determine the effect of eleven levels of 60Co gamma radiation on some agronomic attributes of Jamaica, seeds were irradiated in Transelektro LGI-01 model at the Instituto Nacional de Investigaciones Nucleares. The plants were planted in black polyethylene bags of 5 kg capacity, using as substrate tezontle red and using the Steiner nutrient solution. The variables evaluated were: root lodging, germination percentage, plant height, seed yield and chalice, which were evaluated under a completely randomized design with four replications (11x3) = 33 experimental units, with data from germination dose curve radiosensitivity was determined. The results indicate that the root lodging and plant height were positively affected by radiation. The percentage of germination was minimally affected by radiation and higher seed yields and chalice were achieved with 5 and 10 Gy. In this study it can be concluded that to obtain a better fit in the crook of radiosensitivity, the range of irradiation may be due to increase to 1 kGy.