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白僵菌对沙棘木蠹蛾幼虫的致病力及其生物学特性研究

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Study on pathogenicity of Beauveria bassiana against Holcocerus hippophaecolus larvae and its biological characteristics

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为了有效的防治沙棘木蠹蛾(Holcocerus hippophaecolus), 减少化学防治对环境的污染, 本试验在温度 (25 ±1)℃, 相对湿度(80±10)%的试验条件下, 用浓度1×10 8 个/ mL 的8 株白僵菌孢子悬浮液, 测定了其对10 ~ 12 龄沙棘木蠹蛾幼虫的致病力, 并对筛选出的高致病力菌株生物学特性进行了初步研究｡试验表明:8 株菌株均能感染沙棘木蠹蛾幼虫, 其中Z-006 菌株为高致病力菌株, 致死率达到67 %, LT50为19.6 d ;在不同培养基上测定了Z-006 的生长量､产孢量, 表明Z-006 菌株在PDA 培养基上的生长情况最佳｡

Abstract

In order to control the damage of Beauveria bassiana effectively and reduce the environment pollution from chemical control , the pathogenicity of eight strains Beauveria bassiana with consistency 1 ×108 sporeper mL against Holcocerus hippophaecolus larvae of 10 ~ 12 instar was examined under the (25 ±1)℃, RH (80 ±10)%, and the biological characteristics of the higher pathogenicity strain were studied .The result showed that all of these strains could affect the Holcocerus hippophaecolus larvae , Beauveria bassiana Z -006 had higher pathogenicity than others , mortality was 67 %, its LT50 was 19.6 days .At the same time , the Z -006 strain grew best and had best sporulation on PDA medium .

关键词

白僵菌 /沙棘木蠹蛾 /致病力 /产孢量{{custom_keyword}} /

Key words

Beauveria bassiana /Holcocerus hippophaecolus /pathogenicity /sporulation{{custom_keyword}} /

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刘丹1,吴淑贤1,韩福生3,何运转1,彭进友2,刘顺1.白僵菌对沙棘木蠹蛾幼虫的致病力及其生物学特性研究 [J]. 河北农业大学学报, 2009, 32(2): 93-96

LIU Dan1,WU Shu-xian1,HAN Fu-sheng3,HE Yun-zhuan1,PENG Jin-you2,LIU Shun1.Study on pathogenicity of Beauveria bassiana against Holcocerus hippophaecolus larvae and its biological characteristics [J]. Journal of Hebei Agricultural University, 2009, 32(2): 93-96

中图分类号：S 793 .6

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