Determination of Leaf Water Content by Beta Ray Transmission

Functional statistical techniques applied to vine leaf water content determination

A statistical analysis of functional data, obtained as reflectance values measured using a hyperspectral sensor, was used to determine water content in vine leaves. Our study was conducted using a sample of 80 vine leaves whose water content was determined by calculating the weight difference between leaves before and after drying in an oven. Two regression models, one linear and the other non-...

Water stress of sugarbeet as related to leaf and canopy temperatures and to leaf Water content

Determination of Leaf Water Content by Visible and Near-Infrared Spectrometry and Multivariate Calibration in Miscanthus

Leaf water content is one of the most common physiological parameters limiting efficiency of photosynthesis and biomass productivity in plants including Miscanthus. Therefore, it is of great significance to determine or predict the water content quickly and non-destructively. In this study, we explored the relationship between leaf water content and diffuse reflectance spectra in Miscanthus. Th...

Beta gauging leaf water status: influence of changing leaf characteristics.

Since the intvroduction (3) o,f the technique of beta gauging as a method for continuous and nondestructive mon!itoriing the water status of leaves, severcal reipo,rts (1-4) have appeared verifying the technique and its appl,ication in physio;logical research. Impliciit in this applicatiioni o?f beta gauging is the assutmption that, except for diurinal variations in water content, the physical ...

DNA Content of Beta vulgaris Chloroplasts during Leaf Cell Expansion.

During the growth of beet leaves from 2 to 3 to 25 to 30 centimeters, the leaf cells increase in size, the average number of chloroplasts per cell increases from 11 to 65 and the amount of chloroplast DNA per cell increases from 1100 to 1900 plastome copies. The average number of copies of the plastome per chloroplast decreases from 104 in 2 to 3-centimeter leaves to 29 in 25 to 30-centimeter l...