The Karyological Rewiev of Gymnosperms on the Base of Database of the Chromosome Numbers

Abstract

A review on karyology of modern gymnosperms with the use of database «Chromosomе numbers of gymnosperms» is done. At present the database includes information on 1036 species, 85 genera, 15 families, 10 orders and 4 classes of gymnosperms. Information on all known numbers of chromosomes is presented for each taxon. It is found that the number of chromosomes of gymnosperms is unknown for half of species. The brief information on the features of chromosome morphology for different systematic groups of gymnosperms is given. It is revealed that the morphology of chromosomes is known in 30 % species gymnosperms only.

Keywords

• chromosome numbers
• gymnosperms
• karyology