One duplication occurred 200 million years ago, just before monocots and eudicots arose.
一次加倍发生在2亿年前，即单子叶和双子叶植物出现之前。
This paper has reviewed the recent progress of researches on plant recombinant DNA technology in monocots in 1980s.
本文就国际上八十年代植物重组DNA在单子叶作物上的研究作了综述。
Rice is not only the most important food crop in the world, but also a model plant for study of the molecular developmental biology in monocots.
水稻是世界上最重要的粮食作物之一，也是单子叶植物发育分子生物学研究的理想模式植物。
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