What factors cause germination?

What factors cause 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. Weed seedlings may emerge from the soil surface to 15 cm deep (Bello et al.

What initiates seed germination?

For non-dormant seeds, germination starts when a seed is provided with water as long as the temperature is appropriate. The uptake of water by dry seed is called imbibition (imbibition means to drink: seeds imbibe water, you do not imbibe seeds). Eventually the shoot will also expand and emerge from the seed.

What are some methods of germination?

Methods of Seed Germination

• Planting. The seeds that are easiest to grow are those that simply germinate when you plant them in the correct environment.
• Cold Stratification. Some plants that are native to the Northern part of the country need a period of cold before they will start to germinate.
• Scarification.
• Sprouting.

Which is not required for seed germination?

Factors such as oxygen, water and temperature are required for seed germination, but the light is not an essential factor amongst other factors.

What causes a seed to germinate?

What causes a seed to jump into germination mode is moisture and warmth. Once the seed comes into contact with moisture, and the temperature is right, it will swell and begin germinating.

How does temperature affect germination?

Temperature affects germination in three primary ways: moisture, hormone production, and enzyme activity. For seeds to germinate, they need to imbibe water. For this to occur, sufficient moisture must be present. A warmer climate may increase evaporation and decrease moisture, which would negatively affect germination.

What are the stages of seed germination?

Process of Germination. Germination of seed follows four main changes that are occurred in steps. These steps are imbibition, respiration, Mobilization of food reserves, and development of the embryo into a seedling.

What are four things that affect temperature?

This article throws light upon the six factors that influencing temperature. The factors are: 1. Latitude 2. Altitude 3. Continentality 4. Ocean Currents and Winds 5. Slope, Shelter and Aspect 6. Natural Vegetation and Soil.