采用点滴法测定了球孢白僵菌MZ041016菌株在2.0×105、2.0×106、2.0×107和2.0×108个/mL4个浓度的分生孢子液对扶桑绵粉蚧(Phenacoccus solenopsis Tinsley)若虫和成虫的致病力.结果表明:球孢白僵菌MZ041016菌株对扶桑绵粉蚧具有很强的致病性,在分生孢子液2.0×108个/mL浓度时对若虫和成虫的致病力最强.扶桑绵粉蚧1龄、2龄、3龄若虫和雌成虫的致死中浓度分别为(2.10±0.06)×106、(2.43±0.06)×106、(3.20±0.06)×106、(3.54±0.06)×106个/mL,致死中时间分别为(4.52±0.17)、(5.34±0.51)、(6.12±0.35)、(6.48±0.32) d.
Virulence measurement of Beauveria bassiana strain to Phenacoccus solenopsis Tinsley
The toxicity bioassay of Beauveria bassiana Vuillemin MZ041016 to Phenacoccus solenopsis Tinsley during four different concentrations on 2.0 × 105,2.0 × 106,2.0 × 107,2.0 × 108 spores per mL was measured by topical application in laboratory,and 1 st,2nd,3rd of larvae and female adults of P.solenopsis were vaccinated respectively.The results indicated that the virulence of B.bassiana MZ041016 to P.solenopsis was high.The accumulative mortality was highest in concentration of 2.0 × 108 spores per mL.The median lethal concentration of 1st,2nd,3rd of larvae and adults of the P.solenopsis was (2.10±-0.06) × 106,(2.43±0.06) × 106,(3.20±0.06) × 106,(3.54±0.06) × 106 spores per mL respectively;the median lethal time was (4.52±0.17),(5.34±0.51),(6.12±0.35),(6.48±0.32) d respectively.
NETL
NSTL
万方数据
维普
