No and no. This warped and sick mentality of honour killings has nothing to do with Islam, its cultural and indeed a wicked act. In Islam were taught if one human being kills another, its as if he has killed the whole of humanity and one who saves a person, its as if he has saved the whole of humanity. Islam is perfect in every sense, unfortunately Muslims are not.
beats me that parents will kill a son for marrying someone agaisnt their wishes while they didnt kill this son when he inflicted pain during labor and coming out. :S