Seed Germination

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Seed Germination

Seed germination is the process in which seeds or spores sprout and begin to grow after being dormant for a period of time. The length of dormancy varies depending environmental conditions in which the seed is surrounded by. The environmental conditions that determine when a seed will begin to germinate are the temperature, oxygen, the amount of light, and the supply of water (Germination, accessed 23 February 2010, http://www.answers. com/topic/germination).

For a seed to begin germinating the temperature should be between 25 to 30 degrees Celsius. Radish seeds however prefer to grow in cooler temperatures from10 to 18 degrees Celsius. The seed also requires large quantities of oxygen to start germination which is obtained from the air and soil moisture. If the seed is sown deeply in the soil, the seed will fail to germinate due to the lack of oxygen. Light is needed for germination to begin however some seeds germination is hindered by light (Factors affecting seed germination, accessed 23 February 2010, http://www.tutorvista.com/content/biology/biology-iv/plant-growth-movements/affecting-seed-germination.php).

The supply of water is the prime requirement for germination as there is no water in a mature seeds embryo. The seed therefore needs to absorb water in order to become active and begin germinating. (Yahya,H, 2010, The Miracle in the seed, accessed 13 march 2010, http://www.harunyahya.com/books/science/seed/seed6.php). If a plant is watered with a small amount of water they weaken, which happens when they loose water faster than they gain it from the soil. Before the plant begins to loose strength the stomata pores close up which helps keep the water inside but allows less carbon dioxide to enter the p...

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Hoyum, K, The difference between potting soil and garden soil, accessed 3 March 2010, http://www.gardenguides.com/101529-differences-between-potting-soil-garden-soil.html

Mulch, accessed 9 March 2010, http://users.netconnect.com.au/~ewood/mulch.html

Young, I, 2004, Plants and pH, accessed 10 March 2010, http://angel-patti03.tripod.com/id3.html.

Doser, A, 2003, pH and its effects on plants, accessed 10 March 2010, http://www.usc.edu/CSSF/History/2003/Projects/S1607.pdf

Plant Nutrients, accessed 10 March 2010, http://www.ncagr.gov/cyber/kidswrld/plant/nutrient.htm

(Yahya,H, 2010, The Miracle in the seed, accessed 13 march 2010, http://www.harunyahya.com/books/science/seed/seed6.php)

McKenzie, R, May 15, 2003, Soil pH and plant nutrients, accessed 12 March 2010, http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex6607

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