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本文采用ＲＡＰＤ技术对节节麦、光稃野燕麦及其杂交后代进行分析，目的是为了对它们进行分子标记，确定杂种的真实性。本次实验共选用７２个随机引物对节节麦、光稃野燕麦及其杂种进行一次性“扫描”，发现有３７个引物能够扩增出节节麦和光稃野燕麦特异的多态性ＤＮＡ片段，其中包括只在节节麦和杂种中出现的特异ＤＮＡ片断，只在光稃野燕麦和杂种中出现的特异ＤＮＡ片断，以及同时出现在节节麦和光稃野燕麦的特异性ＤＮＡ片段。第一种情况约占２９％，第二种情况约占１７％，第三种情况约占５％。
In this paper, RAPD analysis of Artemisia scoparia, Oryza rufipogon and their hybrid progeny were analyzed in order to molecular markers of them, to determine the authenticity of hybrids. In this experiment, a total of 72 random primers were used to conduct a one-time “scan” of O. niloticum, O. japonica and their hybrids, and 37 primers were found to amplify specific polymorphic DNA Fragments, including specific DNA segments that occur only in Aegilops tauschii and hybrids, specific DNA segments that occur only in the oyster oats and hybrids, and specific DNA segments that occur simultaneously in the oat and wild oats. The first case accounted for about 29%, the second case about 17%, the third case about 5%.