GerminaR (version 1.4.2)

ger_SYN: 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.

Value

It returns an vector with the values of Germination Synchrony

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.

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

# NOT RUN {
library(GerminaR)
dfr <- prosopis
syn <- ger_SYN(evalName = "D", data = dfr)
syn
# }