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对普通小麦（Ｔｒｉｔｉｃｕｍａｅｓｔｉｖｕｍ）与中间偃麦草Ｔｈｉｎｏｐｙｒｕｍｉｎｔｅｒｍｅｄｉｕｍ）杂交衍生的八倍体小偃麦，硬粒小麦（Ｔｒｉｔｉｃｕｍｄｕｒｕｍ）与中间偃麦草杂交衍生的六倍体小偃麦的形成过程进行系统的细胞遗传学研究，并用荧光原位杂交（Ｆｌｕｏｒｅｓｃｅｎｃｅｉｎｓｉｔｕｈｙｂｒｉｄｉｚａｔｉｏｎ）技术研究了小偃麦的染色体构成。结果表明：小偃麦的形成是由杂种Ｆ１产生非减数的雌配子，经亲本小麦回交产生回交一代（ＢＣ１Ｆ１）。ＢＣ１Ｆ１在ＡＡＢＢＤＤ或ＡＡＢＢ中枢染色体组的缓冲下，连续自交经人工选择、鉴定而形成稳定的小偃麦。
Triticum aestivum and Thinopyrumintermedium hybridization derived octoploid triticale, Triticum durum and Thinopyrum intermedium hexaploid triticale derived from the formation of hexaploid Triticum to systematically cells Genetic studies, and fluorescence in situ hybridization (Fluo rescenceinsituhybridization) technology to study the chromosome structure of Triticum aestivum. The results showed that the formation of Triticum aestivum was caused by non-subtractive female gametes F1 hybrids, backcrossed generation of the parent wheat back to the generation (BC1F1). BC1F1 was self-selected by successive inbred lines under the AABBDD or AABB central chromosome set and identified to form stable petunum.