Lec7FactorsAffectingPhotosynthesis

Seasonal variations can affect rate of photosynthesis

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Unformatted text preview: se the rate of photosynthesis – ‘Source-sink relationships’ • Source of sugars is affected by the demand for sugars Factors Affecting Photosynthesis Seasonal Variations • Competitive advantage of invasive species – Garlic Mustard (Alliaria petiolata) • Achieves high rates of photosynthesis in early spring when other indigenous species are still dormant. Seasonal Variations can affect rate of photosynthesis in some species, for example Garlic Mustard achieves a high rate of photosynthesis during the early spring when other indigenous species are still dormant. Myers and Angerson, 2003. The American Midland Naturalist. 150(2):231–245. Factors Affecting Photosynthesis Chemicals • Herbicides – Paraquat, Diquat • Electron acceptor http://www.restek.com/ – Overloads photosynthetic system forming free-radicals. – Causes rapid cell membrane destruction. » Rapid contact action. » Light is required for action. T0 24 hr 36 hr Factors Affecting Photosynthesis So Chemicals can affect the r...
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This document was uploaded on 01/17/2014.

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