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以人工饲料、转Bt水稻“克螟稻”(cry1Ab纯和基因型)及其对照亲本“秀水11”稻苗为供试寄主植物开展二化螟Chilo suppressalis(Walker)1～5龄幼虫的室内饲养试验,以明确不同龄期二化螟种群的生活史参数。试验结果表明:二化螟在低龄时死亡率最高。克螟稻对二化螟各个龄期表现出高抗性,其各个龄期在克螟稻上均不能化蛹,随着龄期的增加二化螟的耐受性增强。以秀水11和人工饲料饲养二化螟对其蛹期、成虫期、单雌产卵量、羽化率的影响无显著性差异,以人工饲料饲养的二化螟蛹重显著高于以秀水11饲养的二化螟的蛹重,蛹重与人工饲料饲养时间呈正相关。与秀水11幼苗相比,人工饲料饲养下有利于二化螟雌虫的分化。
Chilo suppressalis (Walker) 1 to 5 were used as experimental host plants with artificial diet, transgenic Bt rice “Ke Xiaodao” (cry1Ab pure and genotype) and their parental “Xiushui 11” Indoor larvae feeding trials to clarify the different age groups Chilo suppressalis population life history parameters. The results showed that: the mortality of Chilo suppressalis at the age of the highest. Kerengostan showed high resistance to the stem borer (Chilo suppressalis) at various instars, and no pupae were found on the Kemilgao at all stages. The resistance of the Chilo suppressalis to Chilo suppressalis increased with age. There was no significant difference in the pupal stage, adult stage, single female fecundity and emergence rate when feeding the Sesamia inferens with Xiushui 11 and artificial diet. The pupal weight of the Stem Barks fed with artificial diet was significantly higher than that with Xiushui 11 Of the pupal weight of Chilo suppressalis, pupal weight and artificial feeding time was positively correlated. Compared with the Xiushui 11 seedling, the feeding of artificial feed was conducive to the differentiation of female Chilo suppressalis.