安徽蓼科植物花粉形态的研究

用光学显微镜对安徽省蓼属３８种３变种，酸模属３种，荞麦属１种，金线草属２种，大黄属１种，竹节蓼属１种的花粉形态进行了观察。除了前人报道的３７种外，其中１２种为首次报道。６属的花粉形态多类型，有球型，近球形，近长球形、扁球形、长球形；从萌发孔来看，有３－沟，３（－４）－孔沟，１２－散沟、３０－散沟、９－散孔沟、２０－３０－散孔；外壁纹饰有细网状，粗网状，皱块状，颗粒－穿孔、穿孔、微刺－穿孔－光滑、颗

A STUDY ON THE POLLEN MORPHOLOGY OF THE POLYGONACEAE IN ANHUI PROVINCE

Pollen morphology of 46 species and 3 varieties representing the genera i.e. Polygonum, Antenoron, Fagopyrum, Rheum, Rumex, Homalocladium was examined in the light microscope (LM) and with the scanning electron microscope (SEM). Pollen grains of Polygonaceae in Anhui Province are spheroidal or subspheroidal, prolate or subprolate; 3-colpate, 12-pantocolpate, 30-colporate, 3-colporate, 4-colporate, 9-pantocolporate, 20-30-pantoporate. The ornamentation of exine is finely or coarsely reticulate, rugulate, granulate-perforate, punctate, microechinate-perforate-smooth, granulate-perforate-smooth, granulate-foveolate, prominently sunken punctate, prominently punctate-striate, densely covered granulate. Based on the characteristics, seventeen pollen types in the family Polygonaceae of Anhui province are recognized and described, i.e. Cephalophilon-type, Tovara-type, Amphibium-type, Persicaria-type, Macranthum-type, Bistorta-type, Avicularia-type, Plebeium-type, Convolvulus-type, Tiniaria-type, Cuspidatum-type, Fagopyrum-type, Sibiricum-type, Rheum-type, Acetosa-type, Aquaticus-type, Homalocladium-type, among which, four new pollen types are proposed, i.e. Macranthum-type, Plebeium-type, Cuspidatum-type, Homalocladium. A key to the types is provided. According to the pollen types ,the authors disagree with wang Jian-Xing's treatment which divided the four species, i.e. Polygonum multiflorum, P. cuspidatum, P. convolvulus, P. dentato-alatum into two sections, and consider the division of the four species into three sections.