phenability (version 2.0)

thsu: Thennarasu Function

Description

Performs a stability analysis according to Thennarasu (1995) methodology. Therefore the statistics N1, N2, N3, N4 are presented in output.

Usage

thsu(data, interaction=FALSE)

Arguments

thsu

thsu function

data

A numeric data.frame with fenotypic means values of MET, and genotypes and environments by rows and columns, respectively.

interaction

do a interaction plot or not (FALSE = no interaction plot output, TRUE = draws a interaction plot between genotypes and environments).

Value

Is returned a list with four numerical statistics values (N1, N2, N3, and N4) by genotype, the ranking for the response variable in each environment, and the Spearman correlation matrix between environments.

References

Thennarasu, K. 1995. On certain nonparametric procedures for studying genotype x environment interactions and yield stability. Ph.D. thesis. P.J. School, IARI, New Delhi, India.

Examples

require("phenability")
data(bean.data)
bean.data
x <- bean.data

thsu(x, interaction = TRUE)