PALYNOLOGY: Detailed explanation of structure of anther

 Author: Anjana Mambully


There is a correction in the video which i posted in YouTube:
Correction: (mature anther) that section is the c.s of anther .not c.s of pollen.
 

Introduction:

Pollen grains are the male gametophyte that is produced in anthers (angiosperm plants) & male cones(in gymnosperm plants). Both these pollen grains have many common features, In this video we are going to describe the structure, mode of formation and dehiscence of anther and pollen grains. 

Anther have mainly 4 layer that consists of epidermis, endodermis, middle layer and tapetum.Tapetum is the the nutritive layer that nourish the developing microspores. 
 
Pollen grains have two walls they are exine and intine.

Exide has another two walls they are sculptured layer and non - sculptured layer. This exine is formed by sporopollenin. 

The inner layer in time is formed by pecto cellulosic.

 The microspores form pollen grains are formed from the inner tissue that is called microsporangium ,this microsporangium is consist of large number of microspore mother cell, each of these mother cells are in the condition of 2n. This microspore mother cell undergo meiosis and give rise to two haploid microspores. This newly generated microspores undergo mitosis and give rise to 4 pollen grains. By the breaking of anter walls the mature pollen grains are dispersed from the pollen sacs.

Location: Thalikulam, Kerala 680569, India

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