The sole purpose of seed germination
testing is to test the nature of the seedlings. How will the seeds do in the
field? Most of the farmers face this query on a regular basis. But, now with
simple and easy methods your seeds can be tested before their sowing, labeling
and selling process, so that you can take maximum advantage and price from the
sale.
The seeds, which you are planning to sow,
are tested in laboratories to check the purity and reliability of a seed
sample. During the lab tests, a sample of 300-400 seeds of every lot is taken.
The seeds are usually put in Seed Germinators which imitate
moist conditions in an environment where 75 to 80 degrees Fahrenheit
temperature is maintained for about a week. The seeds are given ideal planting
conditions to grow. At the end of the week, the seeds are termed under various
categories such as- normal, abnormal or diseased, and dead or hard seeds. A
wide range of Seed Germinators are available with very advanced features like
temperature, humidity, illumination control. They are available in various
capacities and chambers to assist in evaluation germination parameters of seeds
in laboratories.
In the Germination tests, the moisture and
aeration, temperature and light conditions are especially taken care of. The
hard-coated seeds are also given some special treatments to improve their
germination quality. Before planting processes the seeds in the lab are also
disinfected to reduce the hassles of bacteria and fungi.
During the Germination tests, the physical
purity of the seeds have to be checked to determine and analyze the quality of
the seeds. It is done to check that if the considerate sample of seeds is fit
for the lab testing. The seeds should confirm to the prescribed seed quality
standards. After the seed physical purity test, the seeds are categorized in
the pure seeds, other crop seeds, weed seeds, and the determination of husk
less seeds is also done. There should be no inert matter to be found in the
sample seeds; otherwise, they are considered the bad seeds.
The germination process is only possible
with the pure seeds samples. A minimum quantity of 400 seeds is taken and the
germination tests are done with the 4 lots of 100 seeds each or 8 lots of 50
seeds each.
Lastly, the evaluation process of the lab
germination is done on the basis of Normal seedlings category, Abnormal
seedling category, Hard seeds, Fresh and ungerminated seeds and Dead seeds. The
best seedlings which are considered are the normal seedlings. Even if the
germinated seeds which have slight defects and no damage to the growing tissue
are also considered as the normal seeds.
The normal seedlings are the ones which
show the capacity to grow perfectly with green leaves and axis shoot growth.
Abnormal seedlings do not show the capacity to ever grow if proper growing
conditions are provided to them. Hard seeds are the ones which do not absorb
moisture or water till the end of the tests and remain ungerminated. Fresh and
ungerminated seeds are the ones which do not grow at all and can be reused for
the germination process. Dead seeds are the ones which completely collapse and
if pressed hardly at the end of the test, a milky paste is oozed out from them.