germinationmetrics: Seed Germination Indices and Curve Fitting logo

Aravind, J., Vimala Devi, S., Radhamani, J., Jacob, S. R., and Kalyani Srinivasan

ICAR-National Bureau of Plant Genetic Resources, New Delhi

minimal R version License: GPL v3 CRAN_Status_Badge rstudio mirror downloads develVersion Project Status: Active lifecycle Last-changedate Rdoc Zenodo DOI Analytics


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.


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:


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:


Citing germinationmetrics

To cite the methods in the package use:


To cite the R package 'germinationmetrics' in publications use:

  Aravind, J., Vimala Devi, S., Radhamani, J., Jacob, S. R., and
  Kalyani Srinivasan (2019).  germinationmetrics: Seed Germination
  Indices and Curve Fitting. R package version,

A BibTeX entry for LaTeX users is

    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}},
    year = {2019},
    note = {R package version},
    note = {},
    note = {},

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.