Breaking seed dormancy of Astragalus penduliflorus Lam.

被引:3
作者
Dziurka, Kinga [1 ]
Skrzypek, Edyta [1 ]
Dubert, Franciszek [2 ]
机构
[1] Polish Acad Sci, Franciszek Gorski Inst Plant Physiol, Dept Biotechnol, Niezapominajek 21, PL-30239 Krakow, Poland
[2] Polish Acad Sci, Franciszek Gorski Inst Plant Physiol, Dept Dev Biol, Niezapominajek 21, PL-30239 Krakow, Poland
关键词
endangered species; seed germination; seed hardness; scarification; FABACEAE; GERMINATION;
D O I
10.5586/asbp.3617
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
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.
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页数:5
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