stind: Stress indices for genotype selection

In EstimateBreed: Estimation of Environmental Variables and Genetic Parameters

Stress indices for genotype selection

Description

Selection indices for genotypes conducted under stress conditions cited by Ghazvini et al. (2024).

Usage

stind(
  GEN,
  YS,
  YC,
  index = "ALL",
  bygen = TRUE,
  verbose = FALSE,
  plot = FALSE,
  xlab = "Genotype",
  ylab = "Values",
  ...
)

Arguments

GEN	The column with the genotypes to be selected.
YS	Productivity of the genotype without stress conditions.
YC	Genotype productivity under stressful conditions.
index	Index to be calculated (Standard 'ALL'). The indices to be used are: 'STI' - Stress Tolerance Index, 'YI' - Yield Index, 'GMP' - Geometric Mean Productivity, 'MP' - Mean Productivity, 'MH' - Harmonic Mean, 'SSI' - Stress Stability Index, 'YSI' - Yield Stability Index, 'RSI' - Relative Stress Index.
bygen	Returns the average of each genotype if 'TRUE'. Only in this way it will be possible to plot graphs.
verbose	Logical argument. Runs the code silently if FALSE.
plot	Plot graph if equal to 'TRUE' (Standard 'FALSE').
xlab	Adjust the title of the x-axis in the graph.
ylab	Adjust the title of the y-axis in the graph.
...	General ggplot2 parameters for graph customization.

Value

Returns a table with the genotypes and the selected indices. The higher the index value, the more resilient the genotype.

Author(s)

Willyan Junior Adorian Bandeira

Ivan Ricardo Carvalho

Murilo Vieira Loro

Leonardo Cesar Pradebon

Jose Antonio Gonzalez da Silva

References

Ghazvini, H., Pour-Aboughadareh, A., Jasemi, S.S. et al. A Framework for Selection of High-Yielding and Drought-tolerant Genotypes of Barley: Applying Yield-Based Indices and Multi-index Selecion Models. Journal of Crop Health 76, 601-616 (2024). \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1007/s10343-024-00981-1")}

Examples

library(EstimateBreed)

data("aveia")

#General
index <- with(aveia,stind(GEN,MC,MG,index = "ALL",bygen=TRUE))

#Only the desired index
STI <- with(aveia,stind(GEN,MC,MG,index = "STI",bygen=TRUE))

EstimateBreed documentation built on April 4, 2025, 5:37 a.m.