摘要
以敏感品系棉铃虫在苏棉12和玉米上的生长发育及活动频率为对照,研究了新棉33B对高抗Bt棉棉铃虫生长发育及活动频率的影响。结果表明,高抗品系棉铃虫在转基因棉中后期主茎顶部嫩叶、侧枝嫩芽及嫩叶、蕾、铃上完成幼虫和蛹期的发育时间,分别比敏感品系棉铃虫在常规棉上的发育时间长13.4,10.7及7.0d,比敏感品系在玉米上完成发育时间长13.2～20.6d;且取食转Bt基因棉的高抗棉铃虫幼虫死亡率和活动频率高,蛹重减轻,化蛹率和羽化率降低。
In Contrast with the development of susceptible strain of Helicoverpa armigera (Hübner) fed on SM12 and corn,the development and movable frequency of resistant strain fed on 33~B were studied.The results showed the larval and pupal stages of resistant strain fed on the terminal leaf,terminal bud of lateral branch and tender leaf/bud/boll of Bt cotton (33~B) were longer than those of susceptible strain fed on SM12,the development of resistant strain fed on 33~B was delayed for 13.4 d,10.7 d and 7.0 d than the susceptible strain fed on non-transgenic cotton,respectively;and 13.2-20.6 d than the susceptible strain fed on corn organ,respectively.Transgenic cotton was also found to cause a higher mortality and activity frequency of the bollworm larvae,lighter weight of pupae and lower pupation rate and emergence rate.The efficiency of high-dose/refugy strategy was also discussed in this paper.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2004年第12期47-51,共5页
Journal of Northwest A&F University(Natural Science Edition)
基金
国家自然科学基金项目(30270889)
教育部博士点基金项目(2000030703)
关键词
高抗Bt棉棉铃虫
转基因棉
生长发育
活动频率
high level resistant strain of H.armigera (Hübner)
transgenic cotton
development
activity frequency
