An alternative to carrying out phenotypic adaptability and stability analysis, taking into account nonparametric statistics. Can be used as a robust approach, and less sensitive to departures from common genotypic, environmental, and GxE effects data assumptions (e.g., normal distribution of errors).
nahu, kang, fox, or thsu
A numeric data.frame with fenotypic means values of MET, and genotypes and environments by rows and columns, respectively.
do a interaction plot or not (FALSE = no interaction plot output, TRUE = draws a interaction plot between genotypes and environments).
The package can be applied to MET (multienvironment trials) data containing the phenotypic mean of genotype x environment (dataframe with genotypes by rows and environments into columns) and performs nonparametric analysis according to for criteria: H<c3><bc>hn (1979), and Nassar and H<c3><bc>hn (1987); Kang's (1988); Fox et al. (1990) and; Thennarasu's (1995).
Leonardo Castelo Branco
Maintainer: Leonardo C. Branco <[email protected]>
Fox, P.N., B. Skovmand, B.K. Thompson, H.J. Braun, and R. Cormier.
1990. Yield and adaptation of hexaploid spring triticale. Euphytica
H<c3><bc>hn, V.M. 1979. Beitrage zur erfassung der phanotypischen
stabilitat. EDV Med. Biol. 10:112.
Kang, M.S. 1988. A ranksum method for selecting high yielding,
stable corn genotypes. Cereal Res. Comm. 16:113.
Lin, C.S., and M.R. Binns. 1994. Concepts and methods for analyzing
regional trial data for cultivar and location selection. Plant Breed.
Lin, C.S., M.R. Binns, and L.P. Lefkovitch. 1986. Stability analysis:
Where do we stand? Crop Sci. 26:894.
Nassar, R., and M. H<c3><bc>hn. 1987. Studies on estimation of phenotypic
stability: Tests of significance for nonparametric measures of
phenotypic stability. Biometrics 43:45.
Shukla, G.K. 1972. Some aspects of partitioning genotype environmental
components of variability. Heredity 28:237.
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.
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