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采用普通小麦与天蓝偃麦草属间远缘杂种后代八倍体小偃麦（ＡＡＢＢＤＤＥＥ）为母本，与羊草（滨麦草属）杂交，获得三属杂种后，再用普通小麦回交２～３次，并对三属杂种以及回交世代中几个主要性状的遗传表现进行了研究，结果表明：①三属杂种Ｆ１的不育性，采用普通小麦通过回交可得到克服，并且随着回交次数的增加，结实率逐步提高；②回交后代有明显的超矮亲遗传现象；③天蓝偃麦草与羊草的抗病、大穗、多花多实等性状可直接传递给后代；④杂种后代变异类型十分丰富，为小麦杂交育种提供宝贵的原始材料
The offspring of AABBDDEE, an offspring of distant hybrid between common wheat and Azolla, was used as the female parent to cross with Leymus chinensis, The results showed that: ① The sterility of three-hybrid F1 was overcome by backcrossing with common wheat, and with the increase of The backcross increased, the seed setting rate gradually increased; ② backcross progenies have obvious dwarf heredity phenomenon; ③A. Thinopyrum, more flowers and more traits can be passed directly to offspring; ④ hybrid offspring is very rich in variation types, provide valuable raw materials for wheat cross breeding