Title: Cytological observations of microsporogenesis and male gametophyte development of Aquilaria sinensis (Lour.) Spreng.
Abstract: Using an ordinary optical microscope,we investigated the microsporogenesis and male gametophyte development of Aquilaria sinensis.The results show that microsporogenesis and male gametophyte development of A.sinensis are normal.The anther has four chambers.The pollen sac wall consists of four layers,i.e.epidermis,endothecium,middle layer and tapetum;the tapetum is of a glandular type.The formation of the anther wall shows a dicotyledonous type.Cytokinesis occurs simultaneously with meiosis in a microspore mother cell,and the formed tetrads are mostly tetrahedral while some are symmetrical.The mature pollen grains are of a binuclear type.Using a scanning electronic microscope ( SEM),the mature pollen grains were observed,which appeared spherical in shape,with their surface made up of blunt-triangular projected pillars.The germination pores of the pollen were difficult to observe because of their small size and unclear edges.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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