For Disease resistance purpose which of the following breeding method is conducted?

For disease resistance purposes, Backcross breeding and Transgenic breeding both breeding methods is conducted.
Backcross breeding enables breeders to transfer a desired trait such as a transgene from one variety (donor parent, DP) into the favored genetic background of another (recurrent parent, RP).
Genetic improvement of crop plants, domestic animals and useful micro-organisms, through genetic engineering, about their economic use for mankind is referred to as transgenic breeding.