Plant Growth and Movements


   
 
Process of Seed Germination
 
 
             Germination of Voandzeia (Bambarra Bean)
 
Seed germination is an irreversible process. Germination includes the changes that take place from the time the dry seed is provided with suitable conditions to when the seedling becomes established as an independent plant. Various changes take place during germination.
 
They are as follows:
 
Imbibition
The first step in the process of seed germination is imbibition or absorption of water. The seed takes in water through the micropyle which results in swelling of the seed. This is due to the cellular constituents being dehydrated. The swelling causes the seed coat to rupture and enables the radicle to come out in the form of a primary root.
 
 
Respiration
When the seed imbibes water, it causes the metabolic activities to resume. In the beginning the respiration is anaerobic and later it becomes aerobic.
 
 
     
   
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