Phy_reaction_rates {photobiologyPlants}

Phytochrome reaction rates

Description

Rate constants k_1 Pr -> Pfr; k_2 Pfr -> Pr; photoconversion rate \nu = k_1 + k_2 for Type I Phytochrome.

Usage

Phy_reaction_rates(
  w.length,
  s.irrad,
  unit.in = "energy",
  check.spectrum = TRUE,
  use.cached.mult = FALSE
)

Arguments

w.length

numeric array of wavelength (nm)

s.irrad

numeric array of spectral (energy) irradiances (W m-2 nm-1) or (mol s-1 m-2)

unit.in

character string with allowed values "energy", and "photon", or its alias "quantum"

check.spectrum

logical indicating whether to sanity check input data, default is TRUE

use.cached.mult

logical indicating whether multiplier values should be cached between calls

Value

a list of three numeric values giving the photoconversion rate (\nu) and reaction rates (k_1, k_2).

References

Hayward, P. M. (1984) Determination of phytochrome parameters from radiation measurements. In Techniques in Photomorphogenesis, H. Smith and M. G. Holmes (eds). Academic Press, London, pp. 159-173. ISBN 0-12-652990-6.

Mancinelli, A.L. (1994) The physiology of phytochrome action. In Photomorphogenesis in plants, 2nd edition. R.E. Kendrick and G.H.M. Kronenberg, eds. Kluwer Academic Publishers, Dordrecht, pp. 211-269. ISBN 978-0-7923-2551-2 (print), 978-94-011-1884-2 (on-line). doi:10.1007/978-94-011-1884-2_10

See Also

photon_ratio and energy_ratio

Examples

library(photobiology)
trimmed.sun.spct <- trim_wl(sun.spct, range = c(300, 770))
with(trimmed.sun.spct, Phy_reaction_rates(w.length, s.e.irrad))