Study on Sensitivity to Carbendazol and Back Mutation(BM) Verification to Pathogenicity Defect Mutants of Fusarium Graminearum; Screening and Breeding of High-yield Transglutaminase ( TGase ) - producing Streptomyces hygroscopicus Strain Resistant to 2-deoxy-D-Glucose Repression 小麦赤霉病菌对多菌灵的抗药性及致病性缺陷菌株的回复突变检测用筛选抗分解代谢阻遏突变株法选育谷氨酰胺转胺酶的高产菌株
The result showed that the resistant clones were not originated from back mutation of sensitive cell of Ustilago maydis. 此结果表明,抗性克隆不是源于玉米黑粉菌敏感细胞的回复突变。
Results : The mutagenesis rates of murine typhoid salmonella in the experimental groups of all dosage levers were less then 2, and nHAC would not cause the increase of the back mutation in murine typhoid salmonella. 结果:nHAC的浸提液各剂量组对鼠伤寒沙门菌的致突变比值均小于2,nHAC不会引起鼠伤寒沙门菌的回复突变数增加。
Results of Ames test showed that number of colony with back mutation ( revertants ) in varied strains of Salmonella typhimurium at different doses did not exceed the double of the number of those with spontaneous mutation. Ames实验显示各菌株的各剂量组的回变菌落数均未超过自发回变菌落数的2倍。
The experiments of cross and back cross showed that these mutations were belonged to recessive mutation of nucleus gene and controlled by a recessive monogene. 通过正反交试验表明,大豆叶绿素缺失突变属于核基因隐性突变,而且是由一隐性单基因所控制的。