A specific amplified mtDNA fragment R 2 630 WA was obtained from wild abortive type (WA) male sterile cytoplasm by AP PCR technique.

• 应用任意单引物聚合酶链反应技术，从水稻WA 型雄性不育系的线粒体DNA 中得到一个特异的扩增片段R2－630 WA。