| Type: | Package |
| Title: | Plant Stress Response Index Calculator |
| Version: | 1.0.0 |
| Description: | Calculate Plant Stress Response Index (PSRI) from time-series germination data with optional radicle vigor integration. Built on the methodological foundation of the Osmotic Stress Response Index (OSRI) framework developed by Walne et al. (2020) <doi:10.1002/agg2.20087>. Provides clean, direct PSRI calculations suitable for agricultural research and statistical analysis. Note: This package implements methodology currently under peer review. Please contact the author before publication using this approach. |
| License: | MIT + file LICENSE |
| Encoding: | UTF-8 |
| RoxygenNote: | 7.3.3 |
| Depends: | R (≥ 4.0.0) |
| NeedsCompilation: | no |
| Packaged: | 2025-11-10 17:43:17 UTC; feiss026 |
| Author: | Richard Feiss [aut, cre], University of Minnesota [cph] |
| Maintainer: | Richard Feiss <feiss026@umn.edu> |
| Repository: | CRAN |
| Date/Publication: | 2025-11-13 19:00:18 UTC |
PSRICalc: Plant Stress Response Index Calculator
Description
Calculate Plant Stress Response Index (PSRI) from germination data
Details
The package provides clean, direct PSRI calculation methodology
Author(s)
Maintainer: Richard Feiss feiss026@umn.edu
Other contributors:
University of Minnesota [copyright holder]
Calculate Plant Stress Response Index (PSRI)
Description
This function calculates the Plant Stress Response Index from time-series germination data with optional radicle vigor integration.
Usage
calculate_psri(
germination_counts,
time_points = c(3, 5, 7),
total_seeds,
species,
radicle_summary = NULL,
diseased_counts = NULL
)
Arguments
germination_counts |
Numeric vector of cumulative germination counts at each time point (length 3 for days 3, 5, 7) |
time_points |
Numeric vector of time points in days (default: c(3, 5, 7)) |
total_seeds |
Integer, total number of seeds in the replicate |
species |
Character string, species name for identification |
radicle_summary |
Optional list containing radicle data |
diseased_counts |
Optional numeric vector of diseased seed counts |
Value
A list containing PSRI components and metrics
References
Walne, C.H., Gaudin, A., Henry, W.B., and Reddy, K.R. (2020). In vitro seed germination response of corn hybrids to osmotic stress conditions. Agrosystems, Geosciences & Environment, 3(1), e20087. doi:10.1002/agg2.20087
Examples
result <- calculate_psri(
germination_counts = c(5, 8, 10),
time_points = c(3, 5, 7),
total_seeds = 15,
species = 'corn'
)
print(result$PSRI)