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用羊草（Ｌｅｙｍｕｓｃｈｉｎｅｎｓｉｓ，２ｎ＝２８）与灰色赖草（Ｌｅｙｍｕｓｋａｒｅｌｉｎｉ，２ｎ＝２８）进行种间杂交，获得了杂交种子及Ｆ１植株；Ｆ１花粉母细胞减数分裂中期Ⅰ（ＰＭＣＳＭＩ）染色体构型为２．５４Ⅰ＋１２．７３Ⅱ。研究结果表明，羊草与灰色赖草的两个染色体组之间具有较高的同源性；远缘杂交可以动摇羊草固有的遗传特性，可做为今后改良羊草结实性研究的新的突破点。
Interspecific hybridization was carried out between Leymus chinensis (2n = 28) and Leymus kariensis (2n = 28) to obtain hybrid seeds and F1 plants. The chromosome configuration of PMCSMI in F1 pollen mother cells was 2.54 I + 12.73 II. The results showed that there was a high homology between the two genomes of Leymus chinensis and Leymus secalinus, and the distant hybridization could shake the inherent genetic characteristics of Leymus chinensis and could be used as a new breaking point.