Article Side

Online Article Directory!

Hello Guest! Login or Register to submit articles!

The germination process

By Seolncr Subscribe to RSS | June 14th 2012 | Views:

The germination is the process by which a seed develops into a new plant . This process takes place when the embryo is inflated and the seed coat is broken. To accomplish this, each new plant requires basic elements for its development: temperature , water , oxygen and mineral salts . The most common example of germination is an outbreak of a seed from a seed of a plant or floral angiosperm . However, the growth of a hypha from a spore fungal germination is also considered. In a more general sense, germination can imply anything that expands into a larger being from a small existence or germ . Germination is a mechanism of sexual reproduction of plants.

The seed develops from a anterozoide located inside the pollen tube of a flower . It reaches the ovary entering the micropyle to the egg , which produces the fertilization . Subsequently, the egg becomes seed ovary and pericarp or fruit . In seed development is characterized by three states to have occurred after the pollination :

Germination is called the process by which embryonic growth resumed after the resting phase. This phenomenon is not triggered until the seed has been transported to a favorable environment for the agents of dispersal. The determining conditions of the medium are: Provide adequate water , oxygen , and temperature appropriate. Each species prefers a certain temperature to germinate, in general, extreme cold or heat are not conducive to germination but the exhumation of bodies to sprout in different parts of bodies increasingly extended to the Middle East in which farmers leave their crops and will return to modern irrigation. Some seeds need to go through a period of dormancy and, thereafter, also a fixed period of exposure to light to initiate germination.

During germination, water diffuses through the jacket of the seed and reaches the embryo , that during the resting phase is dried almost completely. The water causes the seed to swell, sometimes to the point of tearing the outer sheath. Several enzymes break down the nutrients stored in the endosperm or the cotyledons into simpler substances that are transported through the interior of the embryo to the growth centers. The oxygen absorbed allows the seed to extract the energy contained in these sugars reserve, so you can start the growth .

The radicle is the first spring element embryonic through the seed coat. Form root hairs that absorb water and subjected the embryo to the ground. Then begins to elongate the hypocotyl, which pushes the plumule, and in many cases the cotyledon or cotyledons, towards the soil surface.

Cotyledons light emerging form chlorophyll and carry out photosynthesis until they develop the sheets from the true plumule. In some species, especially grasses , the cotyledons never reach the soil surface, and photosynthesis does not begin until the true leaves develop, in the meantime, the plant remains at the expense of nutrient reserves stored in the seed. From the beginning of germination until the plant achieved full independence of the nutrients stored in the seed, the plant is called a seedling.

For germination to occur some external factors are necessary, as a substrate wet sufficient availability of oxygen to allow breathing aerobic , and a temperature suitable for the various metabolic processes . Furthermore, the latency of germination may require certain environmental stimuli such as light or low temperatures, or there is a weakening of the seed coats. Also contributes the climate of the place in which lies the crop . It is important to know and control the pests that may attack the future plant.

Seolncr - About Author:
Rideau florist in Cornwall flower shop offers same day delivery in Cornwall or on the date you specify with an order. For more about florist cornwall & flowers cornwall info visit

Share on Facebook Tweet It Stumbleupon this post This post is delicious !

Article Source:

Related Business Articles Subscribe to RSS

Online flowers delivery Saskatoon presents a huge range of flowers
Published by Roney on February 6th 2012 | Business
The flowers can be a professional gift, as many times as necessary, whether or not there is a birthd...
Cryptic self-incompatibility of flowers
Published by Seolncr on January 31st 2012 | Business
The cryptic self-incompatibility (AIC) has been described in a limited number of species....
Gametophytic self-incompatibility of flowers
Published by Seolncr on January 30th 2012 | Business
Gametophytic self-incompatibility system (AIG) is characteristic of several families of angiosperms,...
Fusion of gametes in flowers
Published by Seolncr on February 4th 2012 | Business
In Botany , the embryogenesis in pteridophytes is the set of processes physiological leading to the ...
Know how to get flowers by using coupons & coupon codes
Published by Martin Peterson on April 22nd 2012 | Business
At the time of purchase, people need to provide these coupons & ...
Features flowers quiropterofilia
Published by Seolncr on February 15th 2012 | Business
The flowers open just before dusk, but some are open until after sunset and begin to decay in the ea...
Plant tissue culture of flowers
Published by Seolncr on February 2nd 2012 | Business
In its broad sense, the plant tissue culture is defined as a very heterogeneous set of techniques th...
Seeds and fruits of flowers
Published by Seolncr on February 3rd 2012 | Business
The hydrochory is the mechanism of dispersal of propagules through the water , the seeds are adapted...
Fair flowers: flower Medellin
Published by Seolncr on May 4th 2012 | Business
Medellin , Colombia . Medellin flourishes and with it the Flower Fair....
Genetic analysis of flowers
Published by Seolncr on January 26th 2012 | Business
The plants can be studied from various points of view. Thus, they can differentiate different lines ...
Botany: Anemofilia of flowers
Published by Seolncr on February 1st 2012 | Business
In Botany called anemofilia adaptation of many plants flowering that ensure their pollination by win...
Double fertilization in flowers
Published by Seolncr on February 4th 2012 | Business
The double fertilization is the typical form of fertilization in angiosperms and is the process by w...