[en] Under the IAEA expert's guidance, the seeds of some important field crops were irradiated with gamma rays in order to obtain beneficial mutations, especially with regard to improving the quality of the product and increasing the yield potential in addition to increasing the resistance against disease and lodging and shortening the vegetation period and plant height. The irradiation was done with a cobalt-60 unit. Once the seeds were irradiated, they were examined for the degree of germination attained. About 45 days after irradiation, the seeds were planted at an agricultural experimental field at Inshas. For cytological investigations, i.e. for a study of the radiation effects on cell tissues, the root tips of the seedlings were cut off after the germination test and were examined by a special process. Another type of experiment carried out consisted in soaking small samples of certain seeds in a solution of radioactive phosphorus (phosphorus-32) before planting them. This was intended to obtain beneficial mutations in some of the morphological and physiological characteristics of the plants. Some of the seeds were soaked for 24 hours, others for 48 hours. Later they were washed in distilled water and planted at the Inshas experimental field