Scoffoni C M Rawls A Mckown H Cochard and L Sack Decline of Leaf Hydraulic

Scoffoni c m rawls a mckown h cochard and l sack

This preview shows page 3 - 7 out of 7 pages.

Scoffoni, C., M. Rawls, A. Mckown, H. Cochard, and L. Sack. "Decline of Leaf Hydraulic Conductance with Dehydration: Relationship to Leaf Size and Venation Architecture." Plant Physiology 156.2 (2011): 832-43.Sharkway, M. A., and J. D. Hesketh. "Effect of Stomatal Differences Among Species on Leaf Photosynthesis." Crop Science4.6 (1964): 619. Web. Xu, Z., and G. Zhou. "Responses of Leaf Stomatal Density to Water Status and Its Relationship with Photosynthesis in a Grass." Journal of Experimental Botany59.12 (2008): 3317-325. Web. Tables and FiguresTable 1. Percent Changes in Transpiration RatePercent differences in transpiration rate from controls for each condition tested. The percentages reported for each condition are an average of four replicates.Treatment% Change in Transpiration RateControl59.35%Cool air-0.5218%Hot air0.0515%High humidity-0.725%Figure 1. Graphical representation of percent change in transpiration rate under various conditions.
Background image
Table 2. Stomatal Count and SizeMean abaxial and adaxial stomatal count for three replicates are reported, along with stomatal size mean, for four different species. Counts were done in 40x view while size was measured in 10x view and averaged among multiple stomates.SpeciesAbaxial stomataAdaxial stomataStomatal size meansPalm species 203680.06Macadamia integrifolia293140.04Polypodium16200.1Podocarpus21300.08Table 3. Stomatal DensityStomatal density for each species was taken by dividing the number of stomata counted in 40x magnification by the area of field of view, 0.16 mm2.SpeciesAbaxial Stomatal DensityAdaxial Stomatal DensityPalm species 202300
Background image
Macadamia integrifolia1831.2587.5Polypodium1012.50Podocarpus1331.250Table 4.Leaf Area and Second Order Vein Density in Small LeavesThree groups measurements of small leaf area and second order vein density. Included is the average of all three measurements.GroupSpeciesLeaf area (cm2)2nd order vein density (vein length/cm2)1Phillyrea angustifolia4.331.82Heteromeles arbrutifolia5.52.83Heteromeles arbrutifolia3.962.1AverageAll4.592.23Table 5.Leaf Area and Second Order Vein Density in Large LeavesThree groups measurements of large leaf area and second order vein density. Included is the average of all three measurements.GroupSpeciesLeaf area (cm2)2nd order vein density (vein length/cm2)1Platanus racemosa92.571.12Prubus Serrulata39.691.1753Prubus Serrulata78.20.77AverageAll70.1531.015Figure 2. Dry Leaf with Second Order Vein Measurements
Background image
Background image
Figure 3. Moist Leaf with Second Order Vein Measurements
Background image

You've reached the end of your free preview.

Want to read all 7 pages?

  • Fall '09
  • SACK
  • stomatal density, order vein density

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture