ABSTRACT

The pollen morphology of 63 species, one subspecies and six varieties of 11 genera in family Liliaceae was observed and studied in detail by using light microscopy (LM) and scanning electron microscopy (SEM). Among them, 22 species and one variety were reported for the first time. Ten pollen characteristics (shape of polar view, ends of polar view, width of colpus, depth of colpus, length of colpus, colpus costa, colpus membranes, type of surface ornamentation, muri, lumina) were selected for cluster analysis of genera Gagea and Lloydia and for cluster analysis and principal component analysis of genera Lilium and Nomocharis. The results showed that the polar view, colpus morphology and surface ornamentation of pollen grains have important systematic significance. The surface ornamentation of pollen grains in this study can be divided into five types, namely gemmate, reticulate, rugulate, rugulate-perforate and verrucate. In combination with previous research results, our results support that (i) Clintonia and Streptopus should be classified into family Liliaceae; (ii) Fritillaria and Lilium should be considered as independent genera; (iii) Lloydia should belong to Gagea; and (iv) Nomocharis should be merged into Lilium. But our results do not support dividing Lilium into 7 sections.

摘要

利用光学显微镜（LM）和扫描电子显微镜（SEM）对百合科的63个种，1个亚种和11个属的6个品种的花粉形态进行了观察和研究。其中，首次报告了22种1种。被选择用于属的聚类分析十花粉特性（形状极性视图的，极性视图的端部，colpus的宽度，colpus的深度，colpus的长度，colpus科斯塔，colpus膜，表面纹饰，穆里，管腔的类型）Gagea和劳埃德氏菌和百合属和线形菌属的聚类分析和主成分分析。结果表明，花粉粒的极视图，茎突形态和表面装饰具有重要的系统意义。在这项研究中，花粉粒的表面装饰可分为五种类型，即宝石，网状，板状，板状穿孔和细化。结合先前的研究结果，我们的研究结果支持：（i）克林顿和链球菌应归为百合科。（ii）贝母和百合属应视为独立属；（iii）劳埃迪亚应属于盖亚；（iv）应将线形菌合并为百合属植物。但是我们的结果不支持将百合分为7个部分。