It undrew the prelude of transgenic breeding that the company of Monsanto Company obtained the first transgenic tobacco plant which had resistance to tobacco virus by transgenic technique in 1986 . Since then over 10 R genes have been cloned and transferred into various plants .

1986年美国孟山都公司利用转基因技术获得了第一株抗病毒 病的转基因烟草植株， 拉开了转基因育种的 序幕。自那以来，已有10多个抗病基因被克隆并转入到不同植物中。

The forestry engineering construction undrew prologue since the central government has arranged special funds to support the four protection forests system construction from 1978 .

从1978年中央财政安排专项资金支持四大防护林体系建设起，林业工程建设 拉开了序幕。

Effects of Auricularia auricula UNDREW of selenium polysaccharide on the contents of Se and Pb and Hg in tissues of rats

黑 木耳硒多糖对大鼠组织中硒、铅、汞含量的影响