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作 者 ：周忠泽, 鲁润龙, 葛磊, 鲍时来, 郑艳燕

期 刊 ：植物研究 1999年 19卷 1期 页码：17-33

关键词：花粉形态；蓼科；

Keywords:Pollen morphology, Polygonaceae,

摘 要 ：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、颗粒-穿孔-光滑、颗粒-穴状、显著凹陷的细孔、显著的穿孔-壕沟、颗粒。根据这些特征将安徽蓼科花粉划分为17种类型,其中长花蓼型、习见蓼型、虎杖型、竹节蓼型为本文首次提出。本文对蓼属的分类问题进行了探讨,不支持王建新(1994)将何首乌、虎杖、卷茎蓼及齿翅蓼划分两组的意见,而认为应将这4种划分为3组,即支持《湖北植物志》(第一卷)(1976)将虎杖从蔓蓼组中分出,单列一组,成立虎杖组(Sect.Pleuropterus),并支持将荞麦组上升为荞麦属。

Abstract: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.

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