Why do we test seeds?

Why do we test seeds?

It ensures that seed labeling information and advertisements are truthful. It also promotes uniformity among State laws and fair competition within the seed trade. Seed quality equates to crop stand, yield, and overall value. High quality seeds provide the foundation for meeting our food, medical and housing needs.

Is it important to test seeds before planting Why?

Why do we test seed viability? It is important to know that the seeds that are stored in a genebank will grow to produce plants. The viability of seeds at the start of storage will also determine, within the environmental conditions, the storage life of the accession.

What are the method of testing seed?

Indirect Tests of Viability

  • Cutting test. The simplest viability testing method is direct eye inspection of seeds which have been cut open with a knife or scalpel.
  • Topographical tetrazolium test.
  • Excised embryo test.
  • Radiographic methods.
  • Hydrogen peroxide.
  • Authenticity.
  • Damage, health.
  • Purity.

What is the importance of seed testing and seed certification?

Why are seeds certified? The purpose of seed certification is to maintain and make available to farmers high-quality and genetically pure seeds of superior cultivars. Certified seed is high in genetic purity, high in germination and vigor, and of good quality (i.e., free from disease and from damaged or immature seed).

Why seed sampling is important in seed testing?

Sampling is done to get a uniform and representative sample from a seed lot. Hence it is essential that the samples be prepared in accordance to ISTA rules to ensure that the small size sample should represent truly and in the same proportion all constituents of seed lot.

What are the 3 ways to test seeds?


  1. evaluation (examining the seed for a color change in the embryo).
  2. Purity test: The percentage of seed described on the label that is actually found in the quantity of seed.
  3. Weed test: Examines a sample of seed and identifies every seed that is different from the labeled seed kind.

What is the easiest method of seed testing?

A few seeds, such as celery, need light to germinate. In this case, a viability test is even easier: simply place the seeds on top of a sheet of damp paper towel on a plate and leave uncovered.

What is seed testing and certification?

In general, seed certification is a process designed to maintain and make available to the general public continuous supply of high quality seeds and propagating materials of notified kinds and varieties of crops, so grown and distributed to ensure the physical identity and genetic purity.

What is seed certification?

Certification is the process by which a state seed certifying agency gives official recognition to seeds produced of a cultivar or named variety under a limited generation system which ensures genetic purity, identity, and a given minimum level of quality.

What are the objective of seed sampling?

The primary aim of the seed testing is to obtain accurate and reproducible results regarding the quality status of the seed samples submitted to the Seed Testing Laboratories.

What is seed in sampling?

Seed sampling: The process of obtaining a seed sample of a size suitable for test in which the same constituents are present as in the seed lot and in the same proportions. Working sample: The working sample is a sub-sample taken from the submitted sample in the laboratory, on which one of the seed qualities is done.

What do you mean by seed testing?

Seed testing is determining the standards of a seed lot viz., physical purity, moisture, germination and ODV and thereby enabling the farming community to get quality seeds. The Seed Testing Laboratory is the hub of seed quality control. Seed testing is possible for all those who produce, sell and use seeds.

How to do a seed germination test at home?

A seed germination test can be a simple test that growers can do at home. To perform a germination test roll the towel up and place in a jar with a little water in the bottom (the towel will absorb the water and keep the seeds moist)

How are seedlings tested at 20 / 20 Seed Labs?

At 20/20 Seed Labs, we ensure that all substrates, containers and moistening agents are free from phytotoxic properties. Sand, soil and water are tested for impurities and the pH value of water is monitored as well. At the end of the test period, seedlings are evaluated and categorized as follows*:

What’s the best way to test soybean seed?

Sand germ tests are done the same as Warm germination, except that a layer of moist sand is placed over the seeds and KimpakĀ®. This test is useful in suppressing some fungi. It also aids in uniform uptake of water, especially in low moisture soybean seed.

How are seedlings evaluated in an AOSA test?

Seedlings that emerge through the sand/soil mixture are evaluated according to AOSA Rules. An extended cold test is also available which exposes seed to two weeks in the cold instead of one. The saturated cold germination test is another way of determining how well a seed lot will do under unfavorable conditions.