Chromosomal Aberrations in the Lettuce Sprout Root Meristem After Seed Irradiation by Accelerated Carbon Ions and Germination in Hypomagnetic Environment

Study of the Simultaneous Exposure of Lettuce Seeds to Ionizing Radiation and Hypomagnetic Conditions: Application of a 120-cm Cyclotron

“…The coefficient of synergism was less than unity for indicators of the seed vigor and germinating ability, testifying to the antagonistic effect of IR and HMC. Note that the same effect of IR and HMC was observed earlier for the average number of dividing cells at the anatelophase stage in the root meristem of lettuce seedlings obtained from seeds irradiated with carbon ions having an energy of 400 MeV per nucleon at a dose of 1 Gy [13].…”

“…Root length was measured on the seventh day. The coefficient of synergistic enhancement (synergism) was calculated to determine the combined effect of IR and HMC, as described in [13].…”

“…Despite the relevance of research in this area, there are few publications devoted to the combined effect HMC and IR have on biological objects. The combined effect of IR with high LET values and hypomagnetic conditions have on the rate of lettuce seed germination and the frequency of chromosomal abnormalities forming in the seeds was studied in [8][9][10][11][12][13]. Results on the separate and combined effects argon nuclei with an energy of 290 MeV per nucleon and the GMF weakened by 50, 140, and more than 10 3 times have on Lactuca sativa seeds were presented in [10].…”