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CHLOROPHYLL FLUORESCENCE AS AN INDICATOR OF CROP GROWTH EFFICIENCY

CHLOROPHYLL FLUORESCENCE AS AN INDICATOR OF CROP GROWTH EFFICIENCY. Nicole Williams, Biochemistry Mentor: Susan Moran, Maria Pilar Cendrero Mateo Arizona Space Grant Consortium Symposium Tucson, Arizona April 20-21, 2012. Introduction. Photosynthesis efficiency (P E )

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CHLOROPHYLL FLUORESCENCE AS AN INDICATOR OF CROP GROWTH EFFICIENCY

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  1. CHLOROPHYLL FLUORESCENCE AS AN INDICATOR OF CROP GROWTH EFFICIENCY Nicole Williams, Biochemistry Mentor: Susan Moran, Maria Pilar Cendrero Mateo Arizona Space Grant Consortium Symposium Tucson, Arizona April 20-21, 2012

  2. Introduction • Photosynthesis efficiency (PE) • Can be used to measure crop health. • Knowing PE can better guide farmers in applying their resources to yield better profits. • X Difficult to directly measure

  3. Fluorescence FLEX FLuorescenceEXplorer

  4. Hypotheses 1. Fluorescence is negatively correlated with heat dissipation. 2. Fluorescence is an indicator of plant photosynthesis efficiency.

  5. Mike Ottman

  6. Measurements LICOR 6400 • Measurements: • Photosynthesis efficiency • Fluorescence • Heat dissipation

  7. Data Analysis • Time was spent analyzing the data from each leaf using graphs from the data collected by each leaf. • At this point it became clear there were instances of cloud cover or similar circumstances that influenced our measurements. Averages Bad Data

  8. Results

  9. We found a negative relationship between fluorescence and heat dissipation.

  10. Fluorescence and photosynthesis efficiency were strongly correlated.

  11. Concluding Remarks • Fluorescence can provide information to guide farmers in their crop management. • These findings support plans for use of the FLEX satellite to produce global maps of fluorescence. • Future work: • Fluorescence sensitivity to • Crop type • Plant stress • Environmental conditions FLEX FLuorescenceEXplorer

  12. Thank You!

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