Pollen morphology of Silene taxa(Caryophyllaceae) in four sections from Turkey

摘要

Pollen morphology of 23 taxa belonging to the genus 5i/cue, from sections Sclerocalycinae, Chloranthae, Tataricae, and Otites was investigated by both light (LM) and scanning electron microscopy (SEM). The pollen grains were measured and their aperture characteristics and surface ornamentation determined. Significant differences in pollen size and pore number were also found in all species. Pollen types among all taxa examined were spheroid; ornamentations were generally microechinate-microperforate (punctate) and perforate in S. caesarea; structures were tectate and semitectate only in S. Caesarea. The highest pore numbers were in S. doganii; the lowest pore numbers were in S. frivadszkyana. The widest perforate was observed in S. caesarea, whereas the lowest value was registered in S. caramanica var. ilarslanii. The species with the most different pollen morphology, according to its general characters, was S. caesarea as well as it is the most advanced, according to pore numbers and perforation. The most primitive species was observed to be S. frivadszkyana.