【摘要】 华东师范大学牧草选育研究课题组培育的普通小麦(Triticum aestivum)与天蓝偃麦草(Agropyron glaucum)远缘杂交的高度不育的后代再与通小麦回交,经七年选育现已获得育性恢复的一年生粮草兼用型饲革新品系,进行细胞学分裂时期的行为观察表明:在花粉母细胞减数分裂各个时期中,可见到染色体呈正常的分裂活动的分裂相。对根尖细胞有丝分裂活动观察,证明该品系为稳定的整倍体。更多还原

【Abstract】 After seven years of selection,the highly sterile remote hybrid offspring of Triticum aestivum×Agropyron glaucum bred by the group at E.China Normal University was baekcrossed with Triticum aestivum to obtain a new strain of one- year fodder grass which has recovered fertility and can be used both as grain and grass.Cytological studies of its cell division behavior reveal that seperation of chromosomes during all phases of pollen mother cells meiosis is normal.Observa- tion of mitosis in root tip cells prooves that the karyotype of the strain is a stable euploid.更多还原