Abstract
Data on karyological studies of five larch species ‐ Larix sibirica Ledeb., L. gmelinii (Rupr.) Rupr., L. cajanderi Mayr, L. ochotensis Kolesn., L. × amurensis Kolesn. in different parts of area are presented. Karyotype of Larix (2n = 24) consists of 24 chromosomes (2n = 24) and includes 6 pairs of symmetric (metacentric) and 6 pairs of asymmetric (submeta‐ and intercentric) chromosomes. Except A‐chromo‐somes some populations have B‐chromosome (2n = 24+1B). The number of genome and chromosome mutations including polyploid and aneuploid cells, ring and dicentric chromosomes, fragments was higher in extreme conditions. Based on the number of secondary constrictions in chromosomes the genus Larix was subdivided into some karyotypic groups. Species with one pair of nucleolar chromosomes consist of the first group. Larix taxa with two pairs of nucleolar chromosomes consist of the second group. Many species have three or more pairs of chromosomes with secondary constrictions and form the third group.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
