الفهرس 
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Abstract
First experiment: Evaluation and phenotypic stability of some bean (Phaseolus vulgaris) genotypes:
This investigation was conducted at Sids Horticulture Research Station, Agric. Res. Center, Ministry of Agric., Egypt, during the growing seasons of 1999, 2000, 2001 and 2002. Preliminary evaluation trials for 40 genotypes of beans (Phaseolus vulgaris) were conducted and 14 genotypes out of the tested 40 were chosen and evaluated and their stability performance was measured using the statistical model of Eberhart and Russell (1966). The results obtained could be summarized as follow:
Plant height:
The differences among both the tested genotypes and environments were significant. Meanwhile, the interactions between the genotypes and environments were not significant. The genotypes Narina, Nebraska, Bronco, Giza 3, Giza 6, Xera, Paulista and Tema were stable with higher mean values higher than the grand mean, while the genotype AXS-37 was stable but its mean value was lower than the grand mean.
Number of branches/plant:
The differences in this character among the tested genotypes were highly significant, while the environmental effect and the interactions between genotypes and environments were not significant. The genotypes Monica, Diacol, Nebraska, Giza 6, Tema, Bronco, Paulista and Giza 3 were stable with high mean values than the grand mean; while Narina and Xera were stable with the mean values nearly equal the grand mean. In the meantime, the genotypes Belfin, AXS-37 and Nomad were unstable with high mean values and the genotype Baslim was unstable with a low mean value.