Badania kariologiczne brzozy ojcowskiej i jej potomstwa [Karyological studies on Betula oycoviensis Besser and its progeny]

• Published in: Acta Societatis Botanicorum Poloniae
• Main Author: A. Szwabowicz
• Format: Article in Journal/Newspaper
• Language: English
• Published: Polish Botanical Society 2015
• Subjects: Botany; QK1-989; Dwarf birch
• Online Access: https://doi.org/10.5586/asbp.1972.018; https://doaj.org/article/be0178c1c5624baf8ba51c50995e8f4b

In the progeny of Betula oycoviensis pollinated with the pollen of Betula oycoviensis three groups were distinguished: oycovlensis type, verrucosa type, and „nova" type (a small dwarf birch). The number of chromosomes determined in the parental specimens and in several descendent plants belonging to the three types was in all cases 2n=28. Besides the number 28 there occurred simultaneously other numbers of chromosomes in the cells of very young leaves of two specimens. This fact should be considered as a phenomenon of mixoploidy.