disomic

(2) it was difficult to obtain alien disomic addition lines from alien monosomic and double monosomic additions;

(2)在建立小麦-源二附加系研究中，源单单附加系并非良好基础材料；

(2)在建立小麦-源二附加系研究中，源单单附加系并非良好基础材料；

(2) it was difficult to obtain alien disomic addition lines from alien monosomic and double monosomic additions;

The chromosome conferring resistance to BYDV showed the intendance to substitute 2D rather than 2A, 2B wheat chromosomes in disomic substutution lines.

在二代换系中,该染色优先取代2D小麦染色、而非2A、2B小麦染色;