title: [Embryology of ovules from the second-year-old cones of scotch pine after acute irradiation in the zone of Chernobyl nuclear plant].
abstract: The embryological processes after acute irradiation in the zone of Chernobyl (radiation level 4-5 Yy) were studied in ovules from the second-year-old cones of scotch pine. Four types of anomalies were detected in ovules of all experimental pine trees: undeveloped ovules in layer of strobiles; a substitution of female gametophit by tissues originaled from tapetal or nucellar cells; death of macrogametophytes connected with the interruption of divisions during the cenocitic stage in full-fertile pine trees. These anomalies appear during the normal development of microgametophytes.
authors.affiliation: Institute of Forest Sciences, Russian Academy of Sciences, Uspenskoe.
authors.forename: L V
authors.initials: LV
authors.lastname: Khromova
mesh_terms: D011210:Power Plants; D018788:Radioactive Hazard Release; D014197:Trees / Q000254:growth & development* / Q000528:radiation effects*; D014455:Ukraine
vernacular_title: Embriologicheskie protsessy u sosny obyknovennoĭ v semiapochkakh vtorogo goda posle ostrogo oblucheniia v god opyleniia v raĭone CHAES.