monosomic

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

(2)在建立小麦-冰草异源二附加系研究中，异源单和双单附加系好基础材料；

(2)在建立小麦-冰草异源二附加系研究中，异源单和双单附加系好基础材料；

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