The present investigation aimed to study the effects of some bean varieties(Giza3,Bronco,Atlantic,Narina,Nabraska,Morgan,Magnum,Demeter,Tilla and Promo) on the population density of aphids , leafhoppers and whitefly insects .The obtained results show pronounced differences in the population density of the aforementioned insects for the tested varieties. The least susceptible varieties of bean were Giza3 followed by Bronco and Morgan varieties, while the highest susceptible varieties were Promo followed by Tilla, Magnum ,Narina , Nabraska ,Demeter and Atlantic varieties were moderate for insect infestation during 2006 and 2007 seasons. Chemical analysis results showed a positive relationship between protein and carbohydrate contents and aphids, leafhoppers and whitefly infestation in all bean varieties, and reverse relationship recorded between pH values and insects infestation, while, negative relationship between insects infestation and obtained yield was also recorded. Therefore, it could be recommended that susceptibility of plant variety must be considered in the integrated pest management programs. Transmission experiments of bean leaf roll virus (BLRV) by aphid insects Aphis craccivora Koch and Myzus persicae Sulz. confirmed the ability of these aphid species to transmit the BLRV. The results of virus transmission could be summarized as follows: i) The acquisition access feeding periods ranged between 1 and 9days for A. craccivora and 2-11 days for M. persicae. ii) Latent periods in aphid insect vectors ranged between 5 and 8 days iii) Inoculation access feeding periods ranged between 2 hrs and 6hrs for A. craccivora and 2-8 hrs for M. persicae. iv) Latent period of virus in host plants ranged from 4 to 6 days in celery plants and 10 to16 days in bean plants. v) Retention periods of the virus in the infective aphid vector ranged between 24 - 28 days