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UV Radiation and Plant Pigmentation

CSEF · 2009 Plant Biology

Lorene J. Chung · Villa Park High School, Villa Park, Orange County

Overview

Objectives/Goals To find out the effects that UV light has on plant growth, development, and pigementation. Methods/Materials Materials Used -Spectrophotometer -Spinach -Cuvettes -DPIP -Phosphate buffer -UV Bulb/Lamp -Distilled water -Blender -Cheese Cloth -Stop watch -Tissues -Ice -Hot plate -Large Beakers -Foil Results The spinach that was exposed to UV light displayed a lower transmittance than the spinach that was exposed to regular sunlight. Conclusions/Discussion My hypothesis was correct because the spinach that was exposed to the UV lamp had a lower transmittance percent compared to the spinach that had been exposed to regular sunlight. This means that the chloroplast became inactive which halts photosynthesis. Therefore, UV light is more degenerative than regular light.

Summary statement

My project tests the effects of UV raditions on plant pigmentation and development.

Help received

My school let me borrow materials and a spectrophotometer.

Competition history

  • CSEF 2009 Plant Biology · Entry S2005

Resources

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