The Effects of Light The Effects of Light on Tagetes patula on Tagetes patula GrowthGrowth

Amber D. JonesAmber D. JonesUndergraduate Student Undergraduate Student Zoology ConcentrationZoology ConcentrationDept. of Biology, TTU Cookeville, TN Dept. of Biology, TTU Cookeville, TN 3850538505

Project SummaryProject Summary

Plants need light to grow.Plants need light to grow. Will the light type that Will the light type that Tagetes patula Tagetes patula are grown in are grown in

effect their growth?effect their growth? Objective: To determine if Tagetes patula growth is Objective: To determine if Tagetes patula growth is

effected by the type of light the plant is grown in.effected by the type of light the plant is grown in. Hypothesis: Tagetes patula will grow better in Hypothesis: Tagetes patula will grow better in

natural (sun) light than in artificial (incandescent) natural (sun) light than in artificial (incandescent) light.light.

Grow Grow Tagetes patulaTagetes patula: some in sun only and others : some in sun only and others in incandescent onlyin incandescent only

Expected results are that Expected results are that Tagetes patula Tagetes patula will grow will grow better in sunlight.better in sunlight.

BackgroundBackground

http://arjournals.annualreviews.org/doi/abs/10.1146/annurev.pp.07.060156.002105

““Light…supplies the energy upon which plant Light…supplies the energy upon which plant life is based…” “The effects of light quality life is based…” “The effects of light quality on plant life are manifold (Stolwijk)”on plant life are manifold (Stolwijk)”

Plants need light to survive. My experiment Plants need light to survive. My experiment examines which light type yields better examines which light type yields better growth in growth in Tagetes patulaTagetes patula..

Objective and Objective and HypothesisHypothesis Objective: To determine if plant* Objective: To determine if plant*

growth is effected by the type of growth is effected by the type of light the plant* is grown in.light the plant* is grown in.

Hypothesis: Plants* will grow Hypothesis: Plants* will grow better in natural (sun) light than better in natural (sun) light than in artificial (incandescent) light.in artificial (incandescent) light.

Null: Different light type will not Null: Different light type will not effect plant growtheffect plant growth

Methods and MaterialsMethods and Materials

StatsStats

Data FormsData Forms

Experimental DesignExperimental Design

Expected Results and Expected Results and BenefitsBenefits

Plants* will grow better in Plants* will grow better in sunlight.sunlight.

Benefits of research: Determining Benefits of research: Determining the light type that grows plants* the light type that grows plants* best.best.

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