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羊茅与黑麦草属牧草间杂交为改善羊茅品质提供了广泛的遗传变异性。大量的试验结果证明，单个基因，染色体片断，甚至整条染色体或整个染色体组能否从一个种成功地渐渗到另一个种中去，主要决定于杂种的染色体配对水平及其减数分裂的稳定性；为了提高杂种的孕性，杂种或亲本的染色体数有时也需加倍。本文评价了一些杂种的潜力，并对该领域的进展作了简要回顾。
Crossbreeding between fescue and ryegrass provides a wide range of genetic variability for improved fescue quality. Numerous experimental results demonstrate that the success of a single gene, chromosome segment or even the entire chromosome or the entire genome from one species to another is largely determined by the level of chromosome pairing and its meiosis Stability; In order to improve the hybrid’s pregnancy, the number of chromosomes in the hybrid or parent is sometimes doubled. This article assesses the potential of some hybrids and briefly reviews the progress in this area.