Title: 15 Main Factors Affecting Photosynthesis
Headings: 15 Main Factors Affecting Photosynthesis
15 Main Factors Affecting Photosynthesis
Factor # 1. Temperature:
Factor # 2. Carbon Dioxide Concentrations:
Factor # 3. Light:
Factor # 4. Intensity:
Factor # 5. Quality:
Factor # 6. Duration:
Factor # 7. Oxygen:
Factor # 8. Water:
Factor # 9. Mineral Elements:
Factor # 10. Air Pollutants:
Factor # 11. Chemical Compounds:
Factor # 12. Chlorophyll Contents:
Factor # 13. Protoplasmic Factor:
Factor # 14. Accumulation of Carbohydrates:
Factor # 15. Blackman’s Principle of Limiting Factors:
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Content: ADVERTISEMENTS: Nearly 0.032% by volume of carbon dioxide is present in the atmosphere and at this low level it acts as a limiting factor. Under laboratory conditions when light and temperature are not limiting factors, increase in CO 2 concentration in the atmosphere from 0.03% to 0.3-1% raises rate of photosynthesis. With the further increase in the concentration of CO 2 progressively the rate of carbon assimilation increases slightly and then it becomes independent of CO 2 concentration. Thereafter, it remains constant over a wide range of CO 2 concentrations. Plants vary in their ability to utilize high concentrations of CO 2. In tomatoes, high concentration of CO 2, above the physiological range, exerts harmful influence causing leaf senescence. During the early period of the earth, the concentration of CO 2 in the atmosphere was as high as 20%. Factor # 3. Light: