plb1 - Determining Xylem Water Potential of Different Plant...

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Determining Xylem Water Potential of Different Plant Species in Different Environments March 25, 2008 Sarah Abdul Section # 32683
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Results: Plant Name Dry- Bulb Temp ( ° C) Wet- Bulb Temp ( ° C) Relative Humidit y (as decimal) Ψ air (-MPa) Ψ plant (-MPa) Soil Water Content (%) [Wet weight- Dry weight of soil- bag divided by dry weight.] Photon Fluence Rate (μmol/m 2 s) Poppy 24° 20° 0.064 -375.8 -9.0 22.352 1850 Brittle Bush 24° 20° 0.064 -375.8 -20.0 15.901 1850 Orange Tree 17° 11° 0.028 -477.3 -6.0 16.340 56 Springeri 17° 12° 0.039 -433.1 -2.5 34.868 56 African Sumac 16° 11° 0.037 -438.6 -30.0 2.497 80 Bamboo 19° 29° 0.116 -289.6 -34.0 11.758 1900 The data show that plants with less negative water potentials, such as -9.0 MPa, have higher soil water content percentages, such as 22.352 percent. On the other hand, plants with more negative water potentials, such as -34.0 MPa, have lower soil water content percentages, such as 11.758 percent. Plants with more negative air potentials
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plb1 - Determining Xylem Water Potential of Different Plant...

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