Ammistability: R package for ranking genotypes based on stability parameters derived from AMMI model Ajay B. C.*, Aravind J.1, Fiyaz R. Abdul2 Regional Research Station, ICAR-Directorate of Groundnut Research, Anantapur, 201 301 1ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012 2ICAR-Indian Institute of Rice Research, Hyderabad, 500 030 *Corresponding author's e-mail: ajaygpp@yahoo.co.in
Online published on 12 September, 2019. Abstract Selection of genotype for target environment is affected by genotype-by-environment interactions (GEI) and AMMI model is widely used tool to analyse GEI. AMMI does not quantify stability measure making it difficult to rank genotypes. To overcome this lacuna AMMI model output is used to quantify stability measures and rank genotypes. Of several stability measures available in literature, only AMMI stability value (ASV) is implemented in package ‘agricole’ and others have not been implemented in any other R packages. ‘ammistability’ uses output from ‘AMMI’ function in ‘agricolae’ package and computes various stability parameters for AMMI model. Further, genotypes are ranked on the basis of simultaneous selection of yield and stability (SSI). Package also helps to study association among several stability measures. Top Keywords AMMI, ammistability, GEI, R package. Top |