Embryological features, pollen and seed viability of Arnica montana (Asteraceae) �? a threatened endemic species in Europe

[摘要] The embryological features, mode of reproduction and reproductive capacity (pollen and seed viability) on two naturalized populations of Arnica montana in Bulgaria were studied. The embryological study shows that A. montana is a...

[学科分类] 植物学

[关键词] apomixis;Arnica montana;embryology;male and female gametophyte;pollen and seed viability;sexual reproduction