›› 2018, Vol. 30 ›› Issue (9): 1534-1540.DOI: 10.3969/j.issn.1004-1524.2018.09.13

• Plant Protection • Previous Articles     Next Articles

Effect of photoperiods on growth and development and population parameter of corn leaf aphids

DU Junli, ZANG Qiluo, WU Degong*, YU Haibing, ZHAN Qiuwen, HUANG Baohong   

  1. College of Agriculture, Anhui Science and Technology University, Fengyang 233100, China
  • Received:2017-05-02 Online:2018-09-25 Published:2018-10-15
  • Contact: 武德功, E-mail: wudegong118@163.com
  • Supported by:
    2018年安徽省高校优秀青年骨干人才国内访问研修项目(gxgnfx2018021); 国家自然科学基金(31660522); 安徽科技学院校级引进人才(ZRC2014399); 安徽省教育厅重点项目(KJ2016A825,KJ2017A513); 安徽皖垦种业股份有限公司课题; 安徽科技学院校级大学生创新课题(201810879X034)

Abstract: In order to clarify the effects of photoperiod on the growth and development of the corn leaf aphid Rhopalosiphum maidis, and to construct its life table under different photoperiods, aphids were reared with leaves in petri dishes under different photoperiods (2L∶22D, 4L∶20D, 8L∶16D, 12L∶12D, 16L∶8D, 20L∶4D, 22L∶2D), and their developmental time, fertility, survival rate and life parameters were measured. The results showed that the developmental time of immature under photoperiods of 20L∶4D and 22L∶2D were significantly longer than those under other five photoperiods (P<0.05).The survival rate of corn leaf aphid under 8L∶16D, 12L∶12D, 16L∶8D were significantly higher than those under photoperiods of 4L∶20D, 20L∶4D, 22L∶2D (P<0.05). The fertility under photoperiods of 8L∶16D, 12L∶12D, 16L∶8D were significantly higher than other photoperiods (P<0.05). The intrinsic rate of increase (rm), net reproductive rate (R0) and finite rate of increase (λ) under photoperiod of 12L∶12D were the highest (0.357, 42.06 and 1.43 respectively). The rm, R0 and λ under normal photoperiods of 8L∶16D, 12L∶12D and 16L∶8D were significantly higher than extreme photoperiods of 2L∶22D, 22L∶2D (P<0.05). The rm, R0 and λ under photoperiod of 2L∶22D were the lowest. The optimal photoperiods calculated with the fitting equation of life parameter and photoperiods was 11-13 h·d-1. Above results indicated that the normal growth and development of corn leaf aphid under extreme photoperiods were interfered, extremely long or short photophase period would affect the development and dynamic changes of this population.

Key words: photoperiod, Rhopalosiphum maidis (Fitch), life table parameters, fertility, developmental time

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