Introgression ( introgressive hybridization ) the introduction of genetic material from one gene pool to another by hybridization and subsequent back - crossing to one or other of the parents 漸滲現(xiàn)象(漸滲雜交) :是通過(guò)雜交或其后代與某個(gè)親本回交,遺傳物質(zhì)從一個(gè)基因庫(kù)被引入另一個(gè)基因庫(kù)的現(xiàn)象。