What are the 5 factors that affect seed germination?
Several variables might affect the germination, these variables include light, temperature, water, soil type, and air quality.
What are the factors required for germination?
All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. 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.
What are the factors affecting germination and emergence?
Soil temperature, diurnal temperature variation, soil moisture, light, nitrates concentration in the soil, and the gaseous environment of the soil can regulate seed germination and weed emergence (Merfield, 2013).
What 3 conditions are needed for germination?
Temperature, moisture, air, and light conditions must be correct for seeds to germinate.
What are the factors that affect the germination of seeds?
The seeds of all species essentially require at least three external conditions for germination. This four factors are – 1. Water 2. Suitable temperature 3. Oxygen 4. Light 1. Water The supply of water is one of the essential requirement in the germination of seed.
Why is excess water bad for seed germination?
This practices is advantages for seed with hard or dry seed coat or with dormant embryo. Excess water is harmful for the seed germination as most of the seed can not respire under poor aeration condition in germination medium and often over supply of water favours the damping off.
What can I do to help my seedlings germinate?
Some seeds need additional help in breaking dormancy. Abrasion of the seed coat can help in some cases. This can be accomplished by rubbing the surface of the seeds with sandpaper or other abrasive surface. This is not necessary with most common vegetable varieties, but is fairly common for tree and shrub seeds.
What is the role of water in the germination process?
Water plays an important role in seed germination. It helps by providing necessary hydration for the vital activities of protoplasm, provides dissolved oxygen for the growing embryo, softens the seed coats and increases the seed permeability.