iv: Param: Index for germination speed

In seedreg: Regression Analysis for Seed Germination as a Function of Temperature

Param: Index for germination speed

Description

Calculates the emergence or germination speed index according to Maguire (1962)

Usage

iv(data, trat, nrep, time)

Arguments

data	Data.frame containing the responses of the evaluations in separate columns side by side and without the columns with the identification of the factors
trat	Vector of treatments with n repetitions
nrep	Number of repetitions
time	Vector containing time

Value

Returns the vector with the index

References

Maguire JD (1962). Seed of germination - aid in selection and evaluation for seedling emergence and vigour. J Crop Sci 2:176-177.

Examples

data("substrate")
iv(substrate[,c(3:18)],
      trat = substrate$Trat,
      nrep = 4,
      time = 1:16)

seedreg documentation built on July 8, 2022, 1:08 a.m.