Association between Griffing's diallel and the adaptability and stability of Eberhart and Russel

Abstract

The objective of the present work was to provide a methodology to study the inheritance of adaptability and stability through the breakdown of Eberhart and Russell regression coefficients and regression deviations in effects due to the mean and additive genetic effects (g i’s and g j’s ) as well as dominance effects (s ij’s ) of Griffing ́s methodology, when the diallel is conducted in several environments. It was concluded that the adaptability and stability parameters are determined in the same manner as are genetic effects. So an F1 cross inherits half the general combining ability (GCA) mean effect from each parent, while the effects due to specific combining ability (SCA) are subjected to the same considerations relative to s ij’s , i.e., they are dependent on specific com- binations.