Rescue of the critically endangered long-stalked pondweed (Potamogeton praelongus) in the Czech Republic

0369742 - BÚ 2013 RIV SI eng J - Článek v odborném periodiku
Prausová, R. - Janová, J. - Adamec, Lubomír
Rescue of the critically endangered long-stalked pondweed (Potamogeton praelongus) in the Czech Republic.
Acta Biologica Slovenica. Roč. 54, č. 1 (2011), 43-54. ISSN 1408-3671
Výzkumný záměr: CEZ:AV0Z60050516
Klíčová slova: population monitoring * seed germination * tissue culture
Kód oboru RIV: EF - Botanika

Potamogeton praelongus occurs in the CR at only one natural site near Hradec Králové. A new artificial site in an nearby oxbow was selected in 2008. Similar micropopulations were introduced to backwater pools in the Protected Landscape Kokořínsko in 2003-2005. Monitoring micropopulations and habitat factors at P. praelongus sites, investigation of seed germination, and preparation of a sterile in-vitro culture for plant propagation are described here. Between 2008-2010, both micropopulations in the Orlice floodplain increased their size by three times annually. In 2010, plant stand areas of four micropopulations in the Kokořínsko region were 12-50 m2. The most effective treatment to break seed dormancy involved 2-h surface sterilisation in 5 % or 2.5 % NaClO solution proceeded by a period of desiccation. Scarification plays an important role in breaking seed dormancy, mainly physical dormancy. Using similar methods of NaClO sterilisation, an in-vitro culture was prepared.
Trvalý link: http://hdl.handle.net/11104/0203739