Connotation of Plant Growth Regulators on Seed Germination

Seed germination is a complex physiological process influenced by various internal and external factors. The initial requirements for seed germination include suitable temperature (depending on the seed type), moisture, and oxygen. The endosperm serves as a reservoir of food and contains hormones that initiate seed germination. Both endogenous (produced within the seed) and exogenous (externally applied) hormones play a crucial role in germination and the early growth of seedlings. Plant growth activators enhance seed germination and promote growth, while retardants inhibit both germination and growth processes and may induce dormancy. Growth inhibitors, therefore, can be strategically applied to prolong seed viability during storage. Furthermore, various exogenous chemicals are employed to regulate seed and plant growth processes. These hormones and chemicals not only influence germination but also help to determine the seed's chemistry, providing insights into its physiology and predicting its behavior under different conditions.