Influence of Seed Irradiation with X-Rays and Thermal Neutrons Upon Cell Size and Mitotic Activity in Root Tips of Maize

Abstract
The dosage levels used had no appreciable effect upon cell width, but small increases in cell length were associated with increasing dose of irradiation. The treatments effected drastic reductions in mitotic activity. Nucleic acid assays disclosed a tendency toward decreased amounts of ribonucleic acid per root tip with increasing dose of irradiation, but no consistent relationship was found between deoxyribonucleic acid content and dose.