Main Article Content

Abstract

We provide evidence of the structural development and distributional pattern of polysaccharides of the anthers in Melia azedarach L. The anthers of Melia azedarach L. is tetrasporangiate and basic type of wall formation is seen, it consists of six wall layers i.e. single layer of epidermis and endothecium, three middle wall layers and one tapetal layer. The primordium consists of homogenous mass of meristematic cells which having uniform distribution of insoluble polysaccharides. Sporogenous cells are moderate with PAS positive and starch grains are present in all the wall layers. Meiocyte shows moderate amount of carbohydrate with prominent nucleus. The secretary cells are present near the connective and tapetum. Secretary cells are having abundant starch grains. Tetrahedral tetrads are present with surrounding thick callose wall with rich PAS positive walls. The secretary type of tapetum is initially single layered but some of the cells divide periclinally so that it becomes two layered at vacuolated microspore stage. Middle wall layers are starts to degenerate at tetrad stage. The pollen grains are tetracolporate and it contains abundant starch grains. The multiple fibrous thickening is formed in dehisced stage with rich content of polysaccharides. Dehiscence takes place through longitudinal slits and one middle wall layer is persistent at dehisced stage.

Article Details

How to Cite
Talawar P. L, & Agadi S. N. (2019). Ultrastructure and Histochemistry of anther development in Melia azedarach L. International Journal of Bio-Science and Bio-Technology, 11(10). Retrieved from https://journals.edupub.org/index.php/ijbsbt/article/view/10718