Phenotypic and genotypic stability of some faba bean (Vicia faba L.) varieties [electronic resource].

Includes references.

Eleven faba bean varieties were evaluated for seed yield/fad, number of pods/plant, 100-seed weight and leaf chlorophyll content under twelve diverse environments which are the combinations of 3 seasons x 2 plant population densities x 2 locations. Phenotypic and genotypic stability were computed according to Eberhart and Russell (l966) and Tai (l971), respectively. The stability analysis of variance revealed highly significant differences among genotypes, environments as well as GXE interaction for all studied characters. Partitioning the GXE interaction into two components, i.e heterogeneity and remainder mean squares indicated that the heterogeneity mean squares proved to be highly significant and was greater in magnitude in comparison with the remainder one for seed yield/fad, number of pods/plant and 100-seed weight. Thus, the major portion of differences in stability was due to the linear function. The remainder mean square was also highly significant for number of pods/plant, 100-seed weight and leaf chlorophyll content with specific great contribution for leaf chlorophyll content, indicating that non-linear component of GXE interaction was operating.

Summary in Arabic.

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