《环境昆虫学报》

作者	单位
徐川峰，萨日那，何佳玥，郭笑，芦芳，成玮，胡高，陈法军，万贵钧，赵婧妤	1. 南京农业大学植物保护学院昆虫系，南京 210095 2. 上海市农业技术推广服务中心，上海 201103

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中文摘要:

为了解不同玉米品种对草地贪夜蛾生长发育的影响，本文通过比较草地贪夜蛾 Spodoptera frugiperda 取食 2 种糯质型玉米 ( 明玉 1203 和苏玉糯 5 号) 与 3 种普通玉米 ( 苏玉 29、苏玉 30 和郑单 958) 后的发育历期、死亡率、蛹重、成虫畸形率、繁殖力与幼虫取食选择率等生物学参数，分析了草地贪夜蛾对不同品种玉米的适应性差异。结果表明: 以糯质型玉米饲养的草地贪夜蛾幼虫发育历期与成虫寿命均长于取食普通玉米的个体，而蛹重与单雌产卵量低于取食普通玉米的个体。草地贪夜蛾最高总体死亡率 ( 50.82% ) 与成虫畸形率 ( 41.38% ) 均来自于取食糯质型玉米明玉 1203 处理，而最低总体死亡率 ( 37.29% ) 与成虫畸形率 ( 12.50% ) 则分别来自于取食糯质型玉米苏玉糯 5 号和普通玉米苏玉 30 处理组。此外，仅 6 龄幼虫对不同玉米品种的取食偏好性存在显著差异，更倾向于取食普通玉米。综合可见，草地贪夜蛾对普通玉米的适应性好于糯质型玉米，且对糯质型玉米明玉 1203 的适应性最差。研究结果为所选品种玉米的安全生产与草地贪夜蛾的发生为害评估奠定了研究基础。

英文摘要:

To understand the effects of different corn varieties on the development of Spodoptera frugiperda， we analyzed the adaptability of S. frugiperda on different maize by comparing their development duration，mortality rate，pupal weight，adult deformity rate，fecundity，and larval feeding selection rate of S. frugiperda on two varieties of waxy corn ( i.e.，Mingyu 1203，and Suyunuo No. 5) and three varieties of sweet corn ( i.e.，normal corns: Suyu 29，Suyu 30，and Zhengdan 958) ．Results showed that the developmental duration of larva and adult of S. frugiperda fed on waxy corns were longer than those fed on sweet corns，but the pupal weight and fecundity were lower. The overall mortality rate and adult deformity rate of S. frugiperda fed on waxy corn Mingyu 1203 were the highest，and the Suyunuo No.5 and normal corns were the lowest，respectively. Moreover，there were significant differences in host selection among different corn varieties for S. frugiperda only in 6th instar larvae，which showed preference for the normal corns. Overall，the adaptability of S. frugiperda on sweet corn was higher than that on waxy corn，and showed the lowest adaptability to the waxy corn Mingyu 1203. Our results establish the foundation for the safe production of selected corn varieties and the hazard assessment of S. frugiperda.

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