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采用６００１１２５Ｒ剂量的６０Ｃｏγ射线对小麦（ＴｒｉｔｉｃｕｍａｅｓｔｉｖｕｍＬ．）大赖草（Ｌｅｙｍｕｓｒａｃｅｍｏｓｕｓ（Ｌａｍ．）Ｔｚｖｅｌ．）Ｌｒ．７单体异附加系在减数分裂期进行成株辐射处理，经过Ｍ１代根尖细胞有丝分裂中期（ＲＴＣ，Ｍ期）染色体ＧｉｅｍｓａＣ分带粗筛，Ｍ２代ＲＴＣＭ期染色体Ｃ分带和荧光原位杂交鉴定，选育出２个小麦大赖草Ｌｒ．７异易位系。其中Ｔ０２易位系是由Ｌｒ．７染色体绝大部分与一小片段小麦染色体接在一起组成的易位类型（ＴＬｒ．７·Ｌｒ．７Ｗ）；Ｔ０８的易位染色体由小麦４ＡＬ和大赖草Ｌｒ．７某臂组成。
Wheat (Triticum ramosum L.) - Leymus racemosus (Lam.) Tzvel. Lr. 7 Monosomic addition lines were treated with adult plants at the meiosis stage. After the Giemsa C-banding coarse-grained mid-mitosis stage (RTC, M stage) M1 generation, the M2 generation RTCM stage C-banding and fluorescence In situ hybridization identification, breeding two wheat 大 Lai grass Lr. 7 different translocation line. Which T02 translocation line is by Lr. 7 chromosome mostly with a small fragment of wheat chromosome together form a translocation type (TLr.7 Lr.7 W); T08 translocation chromosome wheat 4AL and Larvae Lr. 7 arm composition.