Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2008.100.104PourdadSayyed Saeid MohammadiReza 1200871In this study, some phenotypic stability
parameters; ecovalence (W^{2}_{i}), regression coefficient
(b_{i}), coefficient of determination (R^{2}_{i}),
coefficient of variation (CV_{i}), stability variance (S^{2}_{i})
AMMI stability value (ASV_{i}) and TOP (proportion of environments
in which a genotype ranked in the top third), were used to select among
17 spring safflower genotypes for yield performance and stability simultaneously
across 26 environments under rain-fed conditions of Iran during growing
seasons 2004-06. The results of AMMI analysis showed that 83.78% of the
total sum squares (SS) was attributable to environment effects, only 1.37
and 14.85% to genotype and GE interaction effects, respectively. The results
showed none of the parametric statistics per se was useful for
selecting high yielding and stable genotypes. By simultaneous selection
for yield and stability the genotypes G9, G10 and G11 were the best whereas
the G1 and G17 with the highest yield performance were the most instable.
In conclusion, both of yield and stability should be considered simultaneously
to exploit the useful effect of GE interaction and to make selection of
the genotypes more precise and refined.]]>Adugna, W. and M.T. Labuschagne,2003Linum usitatissimum L.).]]>Becker, H.C.,1981Becker, H.C. and J. Leon,1988Ceccarelli, S.,1994Eberhart, S.A. and W.A. Russell, 1966Finlay, K.W. and G.N. Wilkinson,1963Fox, P.N., B. Skovmand, B.K. Thompson, H.J. Braun and R. Cormier,1990Francis, T.R. and L.W. Kannenberg,1978Isik, K. and J. Kleinschmit,2003Isik, K. and J. Kleinschmit,2005Karlsson, B., H. Wellendorf, H. Roulund and M. Werner,2001Lin, C.S., M.R. Binns and L.P. Lefkovitch,1986Mohammadi, R. and A. Amri,2008Mohammadi, R., A. Abdulahi, R. Haghparast and M. Armion,2007Pinthus, J.M.,1973Purchase, J.L.,1997Roemer, J.,1917Simmonds, N.W.,1991Wricke, G.,1962Zobel, B. and T. Talbert,1984