title: [Karyological studies on Picea ajanensis (Lindl. et Gord.) Fisch. ex Carr. from different regions].
abstract: Results of karyological study of Picea ajanensis (Lindl. et Gord.) Fisch. ex Carr examined from 13 provenances are presented. In addition to the cytotypes with typical chromosome number (2n = 24), P. ajanensis displays cytotypes with one or two B-chromosomes (2n = 24 + 1 - 2B). Among A-chromosomes, there are 8 pairs of long metacentrics and 4 pairs of shorter meta- or submetacentrics. Among B-chromosomes there are two types of chromosomes: metacentric (B1) and submetacentric (B2) ones. There are many nucleolar chromosomes. Several chromosomes have secondary constrictions. Patterns of B-chromosome distribution within P. ajanensis are have been discussed.
authors.affiliation: V. N. Sukachev Institute of Forest, Siberian Branch of the RAS, Krasnoyarsk.
authors.forename: E N
authors.initials: EN
authors.lastname: Muratova
authors.forename: O S
authors.initials: OS
authors.lastname: Bladimirova
authors.forename: T V
authors.initials: TV
authors.lastname: Karpiuk
mesh_terms: D032461:Chromosomes, Plant / Q000235:genetics*; D007621:Karyotyping; D028222:Picea / Q000235:genetics*; D012800:Siberia; D013045:Species Specificity