Astragalus penduliflorus Lam. is an alpine-subalpine species. Several isolated populations occur in Europe: in the Alps, Pyrenees, Carpathians and in central Sweden. Astragalus penduliflorus is considered as critically endangered species in Poland, growing only at the locality in the Smytnia Valley, in the Western Tatra Mountains. The population is at risk, due to the limited reproduction caused by law rate of seed germination, periodically shortened vegetation period that prevent seed development and gnawing the aerial plant parts by deer. The aim of the study was to explain the reason for the poor germination of A. penduliflorus seeds. As a result of mechanical scarification, 100% of A. penduliflorus seeds germinated, which proved that these seeds are characterized by a water-impermeable seed coat, which classified them as hard seeds that go through physical dormancy. Results obtained in this work can be used for effective reproduction and active conservation of threatened A. penduliflorus.
1. Piękoś-Mirkowa H, Delimat A. Astragalus penduliflorus Lam. In: Kaźmierczakowa R, Zarzycki K, Mirek Z, editors. Polska czerwona księga roślin, 3rd ed. Cracow: Institute of Nature Conservation, Polish Academy of Sciences; 2014. p. 282–283.
2. Pawłowski B. Traganek zwisłokwiatowy, nowy składnik flory polskiej. Acta Soc Bot Pol. 1937;14(3):175–182. https://doi.org/10.5586/asbp.1937.012
3. Delimat A. Monitoring of Astragalus penduliflorus (Fabaceae) in the Tatra National Park (Polish Western Carpathians) in 1997–2005. In: Mirek Z, Nikel A, editors. Rare, relict and endangered plants and fungi in Poland. Cracow: W. Szafer Institute of Botany, Polish Academy of Sciences; 2009. p. 193–196.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.