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在法国农研所吕尼西昂饲用植物育种站，通过远缘杂交以及多倍体人工诱导，获得了多花黑麦草（2X）与苇状羊茅（4X）间的三倍体、四倍体和六倍体属间杂种。这些杂种的细胞学资料表明，苇状羊茅的两个染色体组及其与黑麦草染色体组相互之间均存在着一定程度的亲缘关系；保持并利用四倍化的双二倍体是可行的，但六倍化双二倍体的前景则难以予测。总之，苇状羊茅与黑麦草染色体之间可以交换的事实得以将多花黑麦草的基因导入到苇状羊茅中，进而使后者得以改良。
At the Nicosia breeding station of Lyon Sion in France, the triploidy between ryegrass (2X) and tall fescue (4X) was obtained through distant hybridization and polyploid induction. Ploidy and hexaploid intergeneric hybrids. Cytological data of these hybrids indicate that there is a certain degree of genetic relationship between the two genomes of P. fescue and its relationship with the genomes of ryegrass. It is feasible to maintain and utilize the diploid diploid of tetraploid , But the diploid diploid of six times the prospect is difficult to predict. In summary, the fact that the exchange between chromosomes of tall fescue and ryegrass allowed introduction of the ryegrass gene into the reed fescue improved the latter.