Abstract:

In order to inducing wheat-Th.elongatum 3E chromosome translocations, hybrid, backcross and selfcross were done between Chinese spring-Th.Elongatum 3E disomic addition line and Chinese spring-Ae.cylindrica gametocidal chromosome 2C disomic addition line. The seedset rate of hybrid was 28.19% when using Chinese spring- 2C disomic addition line as female parent, which was lower than 37.3% in hybrid of CS-3E disomic addition line × CS-2C disomic addition line (p<0.05). The seedset rate of BC1 was 38.82%, which was significant difference compared with 31.45% of F2 selfcrossed (p<0.05), indicated that the gametocidal chromosome 2C has effect on wheat-Th.elongatum 3E chromosome addition lines. The aberrations of chromosome behaviors on mitosis and meiosis were observed in F2 and BC1 plants, indicated that the gametocidal chromosome 2C was effective during the formation of gametes. These results provided a good basis for further developing wheat- Th.elongatum 3E chromosome translocation lines.