ger_SYN: Germination Synchronization Index

In GerminaR: Indices and Graphics for Assess Seed Germination Process

Germination Synchronization Index

Description

This function calculates the germination synchronization of the germination process.

Usage

ger_SYN(evalName, data)

Arguments

evalName	Prefix of the names of the periods of evaluation.
data	The name of the data frame containing the data.

Details

The Synchory Index Z has been proposed to assess the degree of overlap between flowering individuals in a population. By adopting the idea expressed by PRIMACK, R.B. (1980) the synchrony of one seed with other included in the same replication. Z = 1 when germination of all the seeds occurs at the same time and Z = 0 when at least two seeds can germinate one each time. Z produces a number if and only if there are two seeds finishing the seed germination process at the same time. Thus, the value of Z assessments is the grade of overlap between seed germination.

Value

It returns an vector with the values of Germination synchrony

References

RANAL, M. A.; SANTANA, D. G. DE. How and why to measure the germination process? Revista Brasileira de Botanica, v. 29, n. 1, p. 1-11, mar. 2006.

Examples

library(GerminaR)
dfr <- prosopis
syn <- ger_SYN(evalName = "D", data = dfr)
syn

GerminaR documentation built on May 20, 2022, 1:06 a.m.