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该项成果：一、从我国的土样中筛选到对棉铃虫毒力高于美国IID－I的YBT－B20菌株，属于H3a－3bkurostaki亚种，其cryIA（c）基因定位于7okbr的Hiad段上，基因序列上有4个碱基与HD－I株不同。已申请了专利。二、经3t、Zlt发酵罐中试，10批产品经小菜蛾测定的发酵毒力效价为280O?
The results are as follows: 1. The strain YBT-B20 which belonged to H3A-3bkurostaki was selected from soil samples of our country and its virulence was higher than IID-I in the United States. The cryIA (c) On the gene sequence has 4 bases and HD-I strain is different. Has applied for a patent. Second, after 3t, Zlt fermenter pilot test, 10 batches of products measured by the diamondback moth virulent potency 280O?