Abstract
Neutron imaging is a useful method for studying the water distribution of intact plants, due to the strong interaction of neutrons with hydrogen. This interaction provides high image contrast, even in the presence of small quantities of water. Moreover, the combination of neutron imaging with low-contrast tracer D_2O enables direct visualization of water flow and calculation of water flow rates at the tissue level in plants, at high resolution. This article introduces these two visualization methods, and reports our most recent experimental results using these methods.
