... Dickerson (1974)[50], lai gia hai ging lai ch cú u th lai cỏ th Khi lai ging, nu dựng c ca ging thun giao phi vi nỏi lai, lai cú c u th lai cỏ th v u th lai ca m, m l lai F1 Nu dựng c lai giao phi vi ... dựng c lai giao phi vi nỏi ca ging th 3, lai cú u th lai cỏ th v u th lai ca b, b l lai F1 Trong lai ging, lai cú c u th lai cỏ th, c u th lai ca m v u th lai ca b S dng cỏc phng phỏp ca Dickerson ... di truyn cng gp ca m (Am) - u th lai: bao gm u th lai trc tip (Dd), u th lai ca b lai (Db) v u th lai ca m lai (Dm) 2.1.4 Lai ging v u th lai 2.1.4.1 Lai ging Lai ging l cho giao phi gia nhng...