What is seed germination PDF?
SEED GERMINATION. Germination is defined as the emergence and development from the seed embryo of those essential structures which, for the kind of seed in question, indicate its ability to produce a normal plant under favourable conditions. Structure.
What are the types of seed germination?
The three main types are: (1) Hypogeal Germination (2) Epigeal Germination and (3) Vivipary (Viviparous Germination).
What are the 3 stages of seed germination?
There are three major stages in the germination process. These are the imbibition of water, increased metabolic activity, and swelling of cells. Germination begins with the seed’s imbibition (absorption) of water. Most dormant seeds have 5 to 10 percent moisture content.
What is seed germination explain with diagram?
Germination is usually the growth of a plant contained within a seed; it results in the formation of the seedling, it is also the process of reactivation of metabolic machinery of the seed resulting in the emergence of radicle and plumule. -Step 1- Water imbibition, the uptake of water, results in rupture of seed coat.
Which is important step during seed germination?
Such five changes or steps occurring during seed germination are: (1) Imbibition (2) Respiration (3) Effect of Light on Seed Germination(4) Mobilization of Reserves during Seed Germination and Role of Growth Regulators and (5) Development of Embryo Axis into Seedling.
What is the first phase of seed germination?
First Stage of Seed Germination: Imbibition The first stage of seed germination is Imbibition, or water uptake. In this stage, the seedling begins to absorb water and swell in size. This is the stage that occurs when you begin providing the dried seedling with water, either in soil or directly in water itself.
What is the first stage of seed germination?
The first stage of germination, called imbibition, occurs when the seed is exposed to water. The seed absorbs water though its seed coat. As this happens, the seed coat softens. Next, water triggers the seed to begin converting starch to sugar.
What is the first stage of germination?
imbibition
The first stage of germination, called imbibition, occurs when the seed is exposed to water. The seed absorbs water though its seed coat. As this happens, the seed coat softens.
