germinationmetrics
Seed Germination Indices and Curve Fitting
Provides functions to compute various germination indices such as germinability, median germination time, mean germination time, mean germination rate, speed of germination, Timson's index, germination value, coefficient of uniformity of germination, uncertainty of germination process, synchrony of germination etc. from germination count data. Includes functions for fitting cumulative seed germination curves using four-parameter hill function and computation of associated parameters. See the vignette for more, including full list of citations for the methods implemented.
germinationmetrics: Seed Germination Indices and Curve Fitting 
Version : 0.1.10; Copyright (C) 2017-2026: ICAR-NBPGR; License: GPL2|GPL-3
Aravind, J., Vimala Devi, S., Radhamani, J., Jacob, S. R., and Kalyani Srinivasan
ICAR-National Bureau of Plant Genetic Resources, New Delhi
Description
Provides functions to compute various germination indices such as germinability, median germination time, mean germination time, mean germination rate, speed of germination, Timson’s index, germination value, coefficient of uniformity of germination, uncertainty of germination process, synchrony of germination etc. from germination count data. Includes functions for fitting cumulative seed germination curves using four-parameter hill function and computation of associated parameters. See the vignette for more, including full list of citations for the methods implemented.
Installation
The package can be installed from CRAN as follows:
if (!require('devtools')) install.packages('devtools')
install.packages('germinationmetrics', dependencies=TRUE)
The development version can be installed from github as follows:
devtools::install_github("aravind-j/germinationmetrics")
Detailed tutorial
For a detailed tutorial (vignette) on how to used this package type:
browseVignettes(package = 'germinationmetrics')
The vignette for the latest version is also available online.
What’s new
To know whats new in this version type:
news(package='germinationmetrics')
Links
CRAN checks
Using libcurl 8.14.1 with Schannel
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Citing germinationmetrics
To cite the methods in the package use:
citation("germinationmetrics")
To cite the R package 'germinationmetrics' in publications use:
Aravind, J., Vimala Devi, S., Radhamani, J., Jacob, S. R., and Kalyani Srinivasan (2026).
germinationmetrics: Seed Germination Indices and Curve Fitting. R package version 0.1.10,
https://github.com/aravind-j/germinationmetrics https://cran.r-project.org/package=germinationmetrics.
A BibTeX entry for LaTeX users is
@Manual{,
title = {germinationmetrics: Seed Germination Indices and Curve Fitting},
author = {J. Aravind and S. {Vimala Devi} and J. Radhamani and Sherry Rachel Jacob and {Kalyani Srinivasan}},
note = {R package version 0.1.10 https://aravind-j.github.io/germinationmetrics/ https://CRAN.R-project.org/package=germinationmetrics},
year = {2026},
}
This free and open-source software implements academic research by the authors and co-workers. If you use
it, please support the project by citing the package.