【摘要】 7805菌是从梅白蝶幼虫尸体分离出的一株苏云金杆菌,无鞭毛,其特性与武汉变种有明显的区别,认为是一新变种,暂命名为苏云金杆菌武汉变种甘肃品系(Bacillus thuringiensis var.Wuhanensis gansu7805)。此菌对梅白蝶、菜青虫、沙枣尺蠖,稻苞虫等防效比较显著,应用含活孢子0.125～0.5亿/毫升的菌液,防效达85～100％。更多还原

【Abstract】 Bacteriological and serological studies were conducted on a B._ thuringlenaia strain "7805" obtained from a dead larva o?Appssis crataegi L. in Gaotai County, Ganau Province. Basides lacking of flagellum, the vegetative cells and parasporal inclusions of the strain are different in morphology and biochemical characteriatica from that of B. thuringiensis var. wuhanensia Field tests showed that the parasporal inclusions of strain "7805" were highly toxic against Pieria rapae, Aporia cratesgi. Apocheima ninerarius and Parnara quttsta. Control effect of spraying a preparation containing 0.125-0.5108 living cells/ml againat these pests was 85-100%. It is proposed that the strain "7805" be named Bacillus thuringiensis var. wuhanensis gansu 7805.更多还原