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期 刊 ：植物保护学报 1998年

关键词：棉铃虫；核型；多角体病毒；弱化；宿虫昆虫；

Keywords:cotton bollworm, HaNPV, debilitation,

摘 要 ：棉铃虫核型多角体病毒（ＨａＮＰＶ）感染２龄幼虫，感染３ｄ，幼虫体长和体重明显小于对照幼虫。病毒感染４龄幼虫，残留活虫幼虫历期延长，但取食量减少３７．５２％。病毒感染５龄幼虫，感染幼虫蜕皮时间延迟１８ｈ，幼虫历期延长２ｄ。幼虫血淋巴蛋白电泳结果表明，幼虫蜕皮时间延迟主要原因是蜕皮过程延长。病毒感染５龄初幼虫，残留活虫蛹重减轻１４．１９％，成虫产卵量减少２０．５８％。结果表明，ＨａＮ－ＰＶ感染棉铃虫幼

Abstract:The body length and weight of cotton bollworm Helicoverpa armigera (Hubner) larvae three days after infected in 2nd instar by HaNPV, a specific nuclear polyhedrosis virus pathogenetic to cotton bollworm, were significantly decreased as compared with the h

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