The results of PCR molecular detection, marker genes and foreign target-gene with insect-resistance were quite regular.
PCR分子检测与转化的标记基因和外源目的基因抗性三者极有规律性。
The result showed that: 1. These transgenic insect-resistant cotton after introducing different exogenous gene have different resistance to boll-worm because of distinct killing mechanism;
研究结果表明：1 导入不同外源基因的转基因抗虫棉因其杀虫机理不同而对棉铃虫抗性存在差异；
To date, insect resistance has been provided by a gene from the soil bacterium Bacillus thuringiensis (Bt).
目前，抗虫害的特性是取自土壤中杆菌苏力菌（Bacillus s thuringiensis，下文简称Bt）的一个基因。
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