title: Effects of prolonged exposure to space flight factors for 175 days on lettuce seeds.
abstract: We have studied the effects of prolonged (up to 175 days) exposure of Lactuca sativa seeds to space flight factors, including primary cosmic radiation heavy ions. The data obtained evidence a significant fourfold increase of spontaneous mutagenesis in seeds both with regard to the total number of aberrant cells as well as the formation of single cells with multiple aberrations. Comparison of the present experiment with earlier works shows that the frequency of such aberrations increases with the duration of the flight.
authors.affiliation: Institute of Medical and Biological Problems, Moscow, USSR.
authors.forename: L V
authors.initials: LV
authors.lastname: Nevzgodina
authors.forename: E N
authors.initials: EN
authors.lastname: Maximova
authors.lastname: Akatov YuA
mesh_terms: D002869:Chromosome Aberrations; D003359:Cosmic Radiation; D020450:Heavy Ions; D018545:Lactuca / Q000235:genetics / Q000528:radiation effects*; D008938:Mitosis / Q000528:radiation effects; D012639:Seeds / Q000235:genetics / Q000528:radiation effects*; D013026:Space Flight; D013997:Time Factors