photobiologyPlants (version 0.6.0)

leaf_fluorescence.mspct: Fluorescence emission spectra of leaves.

Description

Fluroescence spectra of whole leaves of wheat excited with low irradiance of UVA1 radiation at 355 nm. Fluorescence state of chlorophylls equivalent to \(F_0\).

Format

A source_mspct with one member source_spct object. each with variable number of rows and 2 numeric variables, w.length and s.e.irrad

Details

The variables of the member spectra are as follows:

• w.length (nm)

• s.e.irrad (QSEU)

Data for spectrum wheat_Fo_ex355nm from Meyer et al. (2003, Fig. 2A). The fluorescence emission is expressed in quinine sulphate equivalent units (QSEU). Data were obtained by digitizing the figure in the publication and extracting the data with DigitizeIt under Windows 11.

References

Meyer et al. (2003) UV-induced blue-green and far-red fluorescence along wheat leaves: a potential signature of leaf ageing. Journal of Experimental Botany, 54: 757-769. tools:::Rd_expr_doi("10.1093/jxb/erg063").

Examples

names(leaf_fluorescence.mspct)
what_measured(leaf_fluorescence.mspct)