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将杨树和野生大豆的ＤＮＡ提取出来、然后采取直接导入法转入大豆·在后代中发现外源基因在大 豆细胞内存在、并表现多种变异性状。
The poplar and wild soybean DNA was extracted and then introduced into soybeans by direct introduction. Exogenous genes were found to exist in soybean cells in the offspring and showed a variety of variation traits.