PROSES PERKECAMBAHAN

Germination

Germination is a process of growth and embryo development (agencies plants). The process of germination is influenced by light, temperature, and oxygen. Germination also involves the physical and chemical processes . Results germination is the emergence of small plants from the seeds. The process of changing the current embryo germination is plumula grow and develop into the stem, and the radicle grow and develop into roots. 

Ø   physics process that occurs at the beginning of germination begins with the end of dormancy in seeds. The expiration period is characterized by the imbibition process, namely the entry of water into the seed resulting seeds will swell and rupture the seed coat.

Ø   chemical process occurs when water enters the water kemuadian the seed embryo to activate the release of hormones Gibberellins (GA). This hormone encourages aleurone (outer thin layer of the endosperm) to synthesize and secrete the enzyme. enzymes hydrolyze working with food reserves contained in kotuledon and endosperm. Then there is an enzyme in the seeds eg amylase enzyme will change amilun contained in the cotyledons into glucose. And glucose is necessary for the formation of energy with oxygen. Furthermore, during the growth of the embryo will be plant seeds.

Germination can be divided into two kinds, namely:

Ø   Germination epigeal

Germination is epigeal event of the unfolding leaf stem segments under hypocotyl resulting institution or institutions leaves and cotyledons rose into the ground, for example on green beans.

Ø   Germination Hipogeal

Germination occurs when the exposition hipogeal is a top stem segment leaves (epikotil) so that leaves the Dales g A follow him to the ground, but the cotyledons remain in the soil .