利用小簇麦与小厘麦进行三属间杂交,首次获得了小麦—偃麦草—簇毛麦三属杂种.杂种兼有三属亲本类型的特征,为中间型,植株粗壮,穗大多花、分蘖力强、成穗率高,呈现较强的杂种优势.细胞学鉴定表明,三属杂种体细胞2n=49,与 AABBDEV 染色体组的期望值相一致.减数分裂行为十分复杂。PMCs 中期Ⅰ出现大量单价体.末期Ⅱ由于落后染色体的大量存在,产生了各种类型的异常四分体。三属杂种自交可孕,结实率为0.2%. The three wheat hybrids were obtained from the cross between the three wheat cultivars with small cluster wheat and small cluster centipede, and the hybrid was the type of the three genera of the three genera, which were middle type, thick plant, spike flower and tiller The results showed that there were 2n = 49 somatic cells in three genera, which were consistent with the expected value of AABBDEV genome.The meiosis behavior was very complicated. A large number of monovalent bodies appear in metaphase I of PMCs, and all kinds of abnormal tetrad occur in late stage II due to the large number of backward chromosomes. Three hybrid self-fertility, seed setting rate of 0.2%.