Ratio of Cut Surface Area to Leaf Sample Volume for Water Potential Measurements by Thermocouple Psychrometers

In situ field measurement of leaf water potential using thermocouple psychrometers.

Thermocouple psychrometers are the only instruments which can measure the in situ water potential of intact leaves, and which can possibly be used to monitor leaf water potential. Unfortunately, their usefulness is limited by a number of difficulties, among them fluctuating temperatures and temperature gradients within the psychrometer, sealing of the psychrometer chamber to the leaf, shading o...

Errors in measuring water potentials of small samples resulting from water adsorption by thermocouple psychrometer chambers.

The adsorption of water by thermocouple psychrometer assemblies is known to cause errors in the determination of water potential. Experiments were conducted to evaluate the effect of sample size and psychrometer chamber volume on measured water potentials of leaf discs, leaf segments, and sodium chloride solutions. Reasonable agreement was found between soybean (Glycine max L. Merr.) leaf water...

Leaf shrinkage: a predictive indicator of the potential variation of the surface area-to-volume ratio according to the leaf moisture content

Leaf shrinkage provides insights into the potential variation of foliar SVR, within the same species, when leaf moisture content is changing in response to water deficit. Since SVR is among the most significant plant flammability features, leaf shrinkage would be a relevant component of fuel hazard assessment through its influence on SVR, enhancing-if it is taken into account-thereby the wildfi...

Rapid estimation of sunflower leaf area from linear measurements

effect of hyperglycemic condition on observed surface area to volume ratio of human cancerous cells

the human blood basal glucose level is a completely controlled range. information on the relationship between culture glucose concentration and changes in the cell's surface area, volume and surface area to volume (s/v) ratio are lacking. cancerous epithelial-like cell lines sw480, sw742 and t-47d were cultured in mediums nourished with 4.7 mm per liter of glucose as the control group and three...