title: Changes in Chenopodium rubrum seeds with aging.
abstract: We studied antioxidative system, germination, growth, and flowering in vitro in Chenopodium rubrum seeds of different ages. Peroxidase, superoxide dismutase, and catalase activity, as well as glutathione status, were determined in 2.5-h imbibed seeds. Germination was tested under controlled conditions. Growth and flowering of plants were tested in vitro. The enzyme activities and glutathione content were higher in younger seeds. Germination declines with seed age. Plants derived from older seeds were smaller, and flowering percentage was lower compared to plants derived from younger seeds. Gibberellic acid reduced the difference in growth and flowering between plants derived from seeds different in age.
authors.affiliation: Center for Multidisciplinary Studies, University of Belgrade, Serbia and Montenegro.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Mitrović
authors.forename: Tanja
authors.initials: T
authors.lastname: Ducić
authors.forename: Ivana
authors.initials: I
authors.lastname: Liric-Rajlić
authors.forename: Ksenija
authors.initials: K
authors.lastname: Radotić
authors.forename: Branka
authors.initials: B
authors.lastname: Zivanović
mesh_terms: D000375:Aging / Q000502:physiology*; D002374:Catalase / Q000378:metabolism; D027462:Chenopodium / Q000502:physiology*; D018525:Germination; D005875:Gibberellins / Q000378:metabolism; D005979:Glutathione Peroxidase / Q000378:metabolism; D010544:Peroxidases / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism; D012639:Seeds / Q000201:enzymology* / Q000254:growth & development; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D005875:Gibberellins; D017382:Reactive Oxygen Species; C007842:gibberellic acid; D010544:Peroxidases; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase