The results are that the characters and cytogenetic behavior of subsequent generation is stable.The heterozygous plants have great hybrid vigor, and have good grain and grass yield.

• 结果表明，四倍体高粱与约翰逊草种及后代性状的遗传学及细胞学行为较稳定，营养体具有强大的杂种优势，粮、草量显著高于双亲，茎秆具有优良的饲草品质。