McCree's action spectra for whole-leaf photosynthesis.

The 'classical' action spectra for Amaranthus edulis Speg. var. UCD 1966, Avena sativa L. var. Coronado (McCree 1972) and Lettuce var. Great Lakes or Boston (McCree 1972a) are included in this data set. Response is net \(CO_2\) uptake measured on leaf sections umder monochromatic light. The light source used was a xenon-arc lamp fitted with a monochromator. Irradiance was in the range 10 to 15 \(W m^{-2}\).

Format

A response_mspct object with two member response_spct objects each with 300 rows and 2 numeric variables, w.length and s.e.response.

Note

Digitised from bitmap of from the original publication.

If you use these data in a publication, please cite also the original source as given under references.

References

McCree, K. J. (1972) Significance of Enhancement for Calculations Based on the Action Spectrum for Photosynthesis. Plant Physiology, 49, 704-706. Fig. 1, AMARANTH. McCree, K. J. (1972a) The action spectrum, absorptance and quantum yield of photosynthesis in crop plants. Agricultural Meteorology 9, 191–216. Table III, species 12.

See also

Other photosynthesis-related functions and data: chlorophylls.mspct, chlorophylls_fluorescence.mspct, photon irradiances

Examples

summary(McCree_photosynthesis.mspct)
#> Summary of response_mspct [3 x 1] object: McCree_photosynthesis.mspct
#> # A tibble: 3 × 7
#>   spct.idx class         dim      w.length.min w.length.max colnames multiple.wl
#>   <chr>    <chr>         <chr>           <dbl>        <dbl> <list>         <dbl>
#> 1 amaranth response_spct [77 x 2]          350          725 <chr>              1
#> 2 oats     response_spct [77 x 2]          350          725 <chr>              1
#> 3 lettuce  response_spct [76 x 2]          350          725 <chr>              1