Pollen Morphology of Lycoris Herb.and Its Taxonomic Significance
Zhou Shoubiao, Yu Benqi, Luo Qi, Qin Weihua,and Wang Ying(College of Life Science, Anhui Normal University,Wuhu 241000,China)
Morphological studies of pollen of thirteen species of Lycoris Herb. in China were reported in this paper. The result shows that pollen grains of Lycoris Herb. are all zygomorphic; navicular or reniform is in equitorial view, and oval or long oval in polar view; monocolpate. The exine ornamentation are reticulate CR(i.e. coarsely reticulate) or FR(i.e. finely reticulate). Under SEM, several little papillae or tubercles can be seen at the bottom of luming or the murus. According to this, we divide them into 4 subtypes: NPCR(i.e. no papillae coarsely reticulate)、PCR(i.e. papillae coarsely reticulate)、NPFR(i.e. no papillae finely reticulate)、PFR(i.e. papillae finely reticulate). Investigations on pollen grains can provide significant data for studies of interspecific relationships and systematics of Lycoris Herb.