中国生物防治学报
中國生物防治學報
중국생물방치학보
CHINESE JOURNAL OF BIOLOGICAL CONTROL
2013年
2期
219-226
,共8页
李银平%雷仲仁*%王海鸿
李銀平%雷仲仁*%王海鴻
리은평%뢰중인*%왕해홍
西花蓟马%球孢白僵菌%致病力%耐热性%产孢特性
西花薊馬%毬孢白僵菌%緻病力%耐熱性%產孢特性
서화계마%구포백강균%치병력%내열성%산포특성
Frankliniella occidentalis%Beauveria bassiana%virulence%temperature tolerance%conidia production characteristics
西花蓟马 Frankliniella occidentalis 是我国新近发现的一种危害极大的外来入侵害虫,为寻求一条可持续、无污染的新型防治方法,本文从33株球孢白僵菌 Beauveria bassiana 中筛选出4株对西花蓟马成虫高毒力的菌株--球孢白僵菌 N-5、SZ-26、SZ-22和 SZ-15.并分别从耐热性和产孢特性两个方面进行筛选.结果表明:在30℃下,白僵菌菌株 SZ-26对西花蓟马成虫的致死中时 LT50最短,为3.094 d,10 d的校正死亡率最高,为98.3%;在34℃下,菌株 SZ-26使西花蓟马致死速度最快(LT50为3.429 d),导致试虫在第10 d 的校正死亡率最高,为94.32%;菌株 SZ-26的产粉量(16.93 mg·g?1)和有效产孢数(2.703×1015孢子·g?1)均显著高于其他3个菌株.本研究显示出球孢白僵菌菌株 SZ-26在西花蓟马的防治上具有极大的开发潜力.
西花薊馬 Frankliniella occidentalis 是我國新近髮現的一種危害極大的外來入侵害蟲,為尋求一條可持續、無汙染的新型防治方法,本文從33株毬孢白僵菌 Beauveria bassiana 中篩選齣4株對西花薊馬成蟲高毒力的菌株--毬孢白僵菌 N-5、SZ-26、SZ-22和 SZ-15.併分彆從耐熱性和產孢特性兩箇方麵進行篩選.結果錶明:在30℃下,白僵菌菌株 SZ-26對西花薊馬成蟲的緻死中時 LT50最短,為3.094 d,10 d的校正死亡率最高,為98.3%;在34℃下,菌株 SZ-26使西花薊馬緻死速度最快(LT50為3.429 d),導緻試蟲在第10 d 的校正死亡率最高,為94.32%;菌株 SZ-26的產粉量(16.93 mg·g?1)和有效產孢數(2.703×1015孢子·g?1)均顯著高于其他3箇菌株.本研究顯示齣毬孢白僵菌菌株 SZ-26在西花薊馬的防治上具有極大的開髮潛力.
서화계마 Frankliniella occidentalis 시아국신근발현적일충위해겁대적외래입침해충,위심구일조가지속、무오염적신형방치방법,본문종33주구포백강균 Beauveria bassiana 중사선출4주대서화계마성충고독력적균주--구포백강균 N-5、SZ-26、SZ-22화 SZ-15.병분별종내열성화산포특성량개방면진행사선.결과표명:재30℃하,백강균균주 SZ-26대서화계마성충적치사중시 LT50최단,위3.094 d,10 d적교정사망솔최고,위98.3%;재34℃하,균주 SZ-26사서화계마치사속도최쾌(LT50위3.429 d),도치시충재제10 d 적교정사망솔최고,위94.32%;균주 SZ-26적산분량(16.93 mg·g?1)화유효산포수(2.703×1015포자·g?1)균현저고우기타3개균주.본연구현시출구포백강균균주 SZ-26재서화계마적방치상구유겁대적개발잠력.
@@@@Western flower thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is a devastating invasive insect pest discovered in China recently. To explore alternative strategy for sustainable control of the pest population, the pathogenicity of 33 isolates of the entomopathogenic fungus Beauveria bassiana to adult WFT was tested under laboratory condition. Based on the isolates tested, four strains (N-5, SZ-26, SZ-22, SZ-15) were selected for their high virulence and mortality rates within 10 days. The isolates were screened for their virulence against WFT adults at higher temperatures and for their conidial production characteristics. The results showed that the strain SZ-26 outperforms in temperature tolerance with the shortest LT50 of 3.094 d and highest mortality rates of 98.3% within 10 days at 30 ℃. Similarly, the strain SZ-26 showed the shortest LT50 of 3.429 d to control WFT adults and highest mortality rates of 94.32% within 10 days at 34 ℃. The yields of conidia powder and efficient conidia number of strain SZ-26 is significantly more than other selected isolates. The results indicate that the strain SZ-26 has great potential to control F. occidentalis in field in an integrated management program as a biological control agent.
