EMS induced intercellular chromatin transmigration in Papaver somniferum L.
| Autor: | Girjesh KUMAR, Sana NASEEM |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Czech Journal of Genetics and Plant Breeding, Vol 49, Iss 2, Pp 86-89 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1212-1975 1805-9325 |
| DOI: | 10.17221/85/2012-CJGPB |
| Popis: | The phenomenon of chromatin migration was observed during microsporogenesis in an ethyl methane sulphonate (EMS) treated population of poppy, which is an important medicinal plant. Cytomixis occurred through a cytoplasmic channel or by direct fusion of pollen mother cells (PMCs); the former was more recurring than the latter. The process was associated with irregular meiosis. PMCs with differing chromosome numbers from the normal diploid number (2n = 22) through cytomixis may lead to the production of aneuploid and polyploid gametes. An increase in the concentration of EMS had a positive effect on the percentage of PMCs showing cytomixis. In addition to cytomixis, other chromosomal abnormalities were also found. Cytomixis along with the related chromosomal abnormalities largely affected the post-meiotic products resulting in some pollen sterility. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|