What is the purpose of seed germination test?

A germination test determines the maximum germination potential, or viability, of the seed. Why do a Germination Test? Because knowing the germination rate of a particular seed lot is key to understanding how well that seed will perform in the field.

What is germination test of seed?

The result of the germination test is calculated as the average of 4×100 seed replicates. It is expressed as percentage by number of normal seedlings. The percentage is calculated to the nearest whole number. The percentage of abnormal seedlings, hard, fresh and dead seeds is calculated in the same way.

What is the hypothesis of seed germination?

Hypothesis: My hypothesis was that the wheat seeds would germinate the fastest due to their size. Procedure: The experiment was conducted as follows: Placed six (6) of each seed type in 50ml of water to soak for 24 hours.

What are the 4 critical factors for germination?

According to VCE Authors Diane Relf and Elizabeth Ball, “There are four environmental factors which affect germination: water, oxygen, light, and temperature.” Water is important because it brings the seed to life. Seeds need a continuous supply of water during germination.

What is the disadvantage of seed testing?

Requires specialized training and experience. Test is usually more laborious and tedious to perform than a germination test. Test results do not reflect fungal infection or chemical damage.

What are the 5 steps of 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 triggers seed germination?

All seeds need water, oxygen, and proper temperature in order to germinate. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat. The embryo’s cells start to enlarge.

What triggers a seed to germinate?

All seeds need water, oxygen and the right temperature to germinate. Dormancy is a state of suspended animation in which seeds delay germination until conditions are right for survival and growth.

What are 3 factors that affect seed germination?

Environmental factors such as temperature, light, pH, and soil moisture are known to affect seed germination (Chachalis and Reddy 2000; Taylorson 1987). Burial depth of seed also affects seed germination and seedling emer- gence.

What are the 3 ways to test seeds?

Accuracy

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 are the four methods of seed testing?

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 makes a seed germinate?

What are the results of seed germination?

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.

Do seeds need soil and sunlight for germination?

Each seed variety has different needs from the soil and from sunlight. Some seeds, like carrots or clover, need direct sunlight in order to germinate. So you would plant these seeds very shallowly, only lightly covering the seed so that it doesn’t blow away.

Does seed need soil to germinate?

Seeds need water, nutrients and warmth to germinate. It is best if the soil is evenly moist because too little water will prevent the seeds from germinating and too much water can cause the seed to rot. Nutrients come from the soil, which should be properly fertilized.

What factors affect germination?

Germination is affected by two main factors, moisture and temperature. The seed will remain dormant until it is exposed to moisture enough the husk or outer layer allows the water into the seed itself, at which time the husk normally will split and a tiny shoot will emerge.