title: Chromosomes and plant cell division in space:  environmental conditions and experimental details.
abstract: Details of the plant cultivation system developed for the CHROMEX experiment flown aboard the Shuttle Discovery (March, 1989) in NASA's Plant Growth Unit (PGU) are presented.  The physical regime as measured during Spaceflight, both within the orbiter cabin environment and within the PGU itself, is discussed.  These data function as a guide to what may be representative of the environmental regime in which Space-based plant cultivation systems will be operating, at least for the near-term.  Attention is also given to practical considerations involved in conducting a plant experiment in Space.  Of particular importance are the differences expected to occur in moisture distribution patterns within substrates used to cultivate plants in Space vs on Earth.
authors.affiliation: Department of Biochemistry and Cell Biology, State University of New York, Stony Brook 11794-5251.
authors.forename: H G
authors.initials: HG
authors.lastname: Levine
authors.forename: A D
authors.initials: AD
authors.lastname: Krikorian
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis; D002455:Cell Division; D002875:Chromosomes; D003470:Culture Media; D004780:Environment, Controlled; D004867:Equipment Design; D017343:Genes, Plant; D018527:Hydroponics / Q000295:instrumentation / Q000379:methods; D008021:Life Support Systems / Q000295:instrumentation; D059828:Plant Cells; D063245:Plant Development; D018517:Plant Roots / Q000166:cytology / Q000235:genetics / Q000254:growth & development; D010944:Plants / Q000235:genetics; D013026:Space Flight / Q000295:instrumentation*; D014893:Weightlessness
chemical_list: D003470:Culture Media; D002245:Carbon Dioxide