What is the difference between seed dormancy and seed germination?

What is the difference between seed dormancy and seed germination?

Dormant seeds do not germinate in a specified period of time under a combination of environmental factors that are normally conducive to the germination of non-dormant seeds. An important function of seed dormancy is delayed germination, which allows dispersal and prevents simultaneous germination of all seeds.

What is the difference between seed viability and seed vigor?

Seed viability is the capability of germination of seed and producing normal seedling. Seed vigor is the speed of germination.

What is seed viability example?

A seed which under the right conditions of moisture, temperature, light etc can germinate is called viable seed. Different crops have different viability standards. An example of viable seed can be lupine extracted from Arctic Tundra. The seeds can be readily grown in the laboratory and the plants are normal.

What is known as seed dormancy?

Seed dormancy is the state in which seed is unable to germinate, even under ideal growing conditions (Merriam-Webster). Because dormancy can be broken by most ideal growing conditions (different and specific for each species), the seeds germinate when they are the most likely to flourish.

What is seed dormancy and its causes?

Seed dormancy can be defined as the state or a condition in which seeds are prevented from germinating even under the favourable environmental conditions for germination including, temperature, water, light, gas, seed coats, and other mechanical restrictions.

What is seed dormancy and its significance?

Answer: Seed dormancy is defined as a state in which seeds are prevented from germinating even under environmental conditions normally favorable for germination. These conditions are a complex combination of water, light, temperature, gasses, mechanical restrictions, seed coats, and hormone structures……

What does seed viability mean?

Seed viability is a measure of the number of seeds that are still alive to produce plants.

What is the meaning of a viable seed?

Viability means whether or not a seed is alive, while germination refers to whether or not a seed can germinate. The number of seeds viable in a collection doesn’t necessarily equal the number of seeds that can germinate, the difference being that some seeds are immature, or dormant (‘asleep’).

What is seed viability?

What is seed viability? The viability of the seed accession is a measure of how many seeds are alive and could develop into plants which will reproduce themselves, given the appropriate conditions.

How seed germination seed viability and seed dormancy relate?

Seed dormancy is defined as a temporary failure of a viable seed to germinate in conditions that favor germination, whereas seed longevity is defined as seed viability after dry storage (storability).

What is the function of dormancy?

Dormancy is a period in an organism’s life cycle when growth, development, and (in animals) physical activity are temporarily stopped. This minimizes metabolic activity and therefore helps an organism to conserve energy.

What causes dormancy?

The dormant state that is induced in an organism during periods of environmental stress may be caused by a number of variables. Those of major importance in contributing to the onset of dormancy include changes in temperature and photoperiod and the availability of food, water, oxygen, and carbon dioxide.

What is the difference between seed viability and seed germination?

Viability means whether or not a seed is alive, while germination refers to whether or not a seed can germinate. The number of seeds viable in a collection doesn’t necessarily equal the number of seeds that can germinate, the difference being that some seeds are immature, or dormant (‘asleep’).

How does dormancy affect seed germination?

Dormancy may reduce the proportion of viable seeds that germinate at any one time, increase how long germination takes to begin, or prevent the seeds from germinating entirely. We need to understand what type of dormancy a seed has so that when we want to germinate seeds we know how to break it.

How are seedlings tested for viability?

Seeds obtained from a parent crop and to be supplied to the farmers are to be tested for their viability by seed testing laboratories. Different crops have different acceptable viability standards. For paddy rice it is about 85\%.

What is the difference between viable and dead seeds?

A seed which is able to germinate given the right conditions of moisture, temperature, light etc is called “viable”. The seeds that are not viable are dead and of no use. Seeds should be stored at proper moisture and temperature to maintain their viability.