结果表明，以中间型小偃麦与小簇麦作为桥梁亲本获得三属杂种的结实率较高，平均为20．5％。
In this paper the cross fertilities of hybrids was mainly studied. The results showed that the mean seed setting of Trigeneric hybrids was 20. 5%.
骡子是公驴和母马交配而生的杂种动物。
合子后生殖分离是由杂种后代的无性繁殖而引起的。
Postzygotic reproductive isolation occurs by the inviability of the hybrid offspring.
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