应用光学显微镜对江淮丘陵区合肥秋季开花的24种植物花粉形态进行了观察和研究,结果表明:花粉粒呈超扁球形至长球形,WE值最大和最小的花粉分别为丝兰(Yucca smalliana Fern.)和桂花(Osmanthus.fragrans(Thunb.)Lour.);体积最大的花粉为丝瓜(Luffa cylindrica(L.)Roem.),最小的为香槐(Cladrastis wilsonii Takeda.)。花粉的萌发孔主要有单沟、3~6沟、不规则散沟、三孔沟、2~4孔及散孔等6种类型,其外壁纹饰主要包括刺状、细网状、粗网状、颗粒状及条纹穿孔等5种类型。该研究为花粉分布区提供了地理位置(31°31′~32°37′N,116°40′~117°52′E)、海拔高度(70~20m)、年降水量(900~1000mm)和≥10℃的年积温(4500~5300℃)等主要生态因子。
The Palynomorphs of 24 autumn blooming plants from Jianghuai hilly region are described and illustrated by light microscope (LM). The results show that the pollen grains are globose to long globular in shape. The maximum and minimum P/E values are Yucca smalliana Fern. and Osrnanthus fragrans (Thunb.) Lour. The maximum pollen grain is Luffa cylindrica (L.) Roem. , and the minimum is Cladrastis wilsonii Takeda. The types of apertures include monosulcate, 3 -6 colpate, irregular pantocolpate, tricolporate, 2 -4 porate and pantoporate. The ornamentation of exine are spinulose, finely reticulate, coarsely reticulate, granular and stripe-perforated. The present study provides the main ecological factors, including geographical position (31 °31′-32°37′N, 116°40′- 117°52′E), altitude (70-20 m), annual precipitation (900- 1 000 mm ) and annual accumulated temperature of ≥10℃ (4 500 -5 300 ℃ ) for the distribution area.