Does anyone have advice on measuring leaf water potential on species with a lot of leaf sap (i.e. Acer saccharum, A. rubrum, Liquidambar styraciflua)?

Dear all,

During recovery, if the leaf water potential of a tree species recovered to control value, does that mean the degree of xylem embolism (PLC) is also reduced to control level? In other words, if leaf water potential recovered, but there remains substantial xylem embolism, is this reasonable?

Hello plant-water relations experts!

I've been trying to estimate minimum xylem water potentials (Pmin) in deciduous trees in Indian Savannas using a Scholander pressure chamber. I understand Pmin to be the mid-day water potential in the driest season i.e. the lowest water potential that a plant experiences. The problem is that most deciduous trees are leafless during the driest season. In our field site in the eastern ghats in India, leaf flush happens after a few showers and mature only by monsoon. Do you have any suggestions on how I could go about estimating Pmin for these deciduous species?

I've been working on recalibrating a WESCOR PsyPRO so that it can be used to measure leaf water potential. So far I've run a number of calibration sessions with little to no success: the chambers, although all under the same conditions (empty, with deionized water, with 3 different calibration solutions), give random values and seldom consistent when doing several readings in a row. As a last resource, I've tried cleaning the chambers and thermocouples with swabs of deionized water first thing in the morning, but I don't think a simple clean is the key to success. Thanks for all the help.

Is there any paper which correlates leaf water potential and canopy leaf photosynthesis?

I want to compare leaf water potential of cassava leaves grown under normal condition and mid-season water deficit stress. I am looking for suggestions or precautions to be taken at the time of recording leaf water potential in field, which may be the selection of leaf (lower/higher canopy), sampling size etc.

My friend has produced a blue flowered Streptocarpus of an originally pink flowered plant by a leaf cutting. Surely this is against the idea that a leaf cutting should be an exact clone of the original?

I need an hyperspectral image of leaf disease for my undergraduate thesis project

Vessel elements play a crucial role in the transport of water from roots to leaves.

Fibers are one of the components of sclerenchyma tissue, along with shorter, thick-walled sclereids and associated with the xylem and phloem tissue for support plant.

In the transverse section both are seems same. So what is accurate parameter to differentiation.