1968年以来,我们开展了莜麦与燕麦之间的杂交育种工作,并培育出一批高产、优质、抗逆性强的新品系,统称重穗型莜麦。但是此项工作是否属于远缘杂交,还有争论,有的同志认为莜麦与燕麦是同属同种作物,不属远缘杂交。本文根据我们对燕麦、莜麦及其杂交后代的主要形态特征和细胞学观察结果进行一些讨论。一、材料与方法以莜麦(Avena nuda)品系69328为父本,燕麦(Avena sativa)永380为母本, Since 1968, we have carried out hybrid breeding between oats and oats and have cultivated a number of new lines of high yield, good quality and strong resistance, collectively referred to as heavy oyster oats. However, whether this work belongs to distant hybridization is still debated. Some comrades think that oyster oats and oats are both the same crops and do not belong to distant hybridization. This article based on our oats, oats and their hybrids of the main morphological characteristics and cytological observations for some discussion. I. Materials and Methods Avena nuda strain 69328 was used as the male parent and Avena sativa Yong 380 was used as the female parent.