中国农业科学 ›› 2021, Vol. 54 ›› Issue (3): 536-546.doi: 10.3864/j.issn.0578-1752.2021.03.008

• 专题:马铃薯块茎蛾绿色防控 • 上一篇    下一篇

马铃薯块茎蛾对不同品种马铃薯块茎的适应性分析

张梦迪1(),闫俊杰1,高玉林1,2()   

  1. 1中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室,北京 100193
    2中国农业科学院国家薯类作物研究中心,北京 100081
  • 收稿日期:2020-07-27 接受日期:2020-08-25 出版日期:2021-02-01 发布日期:2021-02-16
  • 通讯作者: 高玉林
  • 作者简介:张梦迪,E-mail: sdaumengdizhang@163.com
  • 基金资助:
    国家重点研发计划(2018YFD0200802)

The Adaptive Analysis of Phthorimaea operculella to Different Potato Tuber Varieties

ZHANG MengDi1(),YAN JunJie1,GAO YuLin1,2()   

  1. 1State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193
    2National Center of Excellence for Tuber and Root Crop Research, Chinese Academy of Agricultural Sciences, Beijing 100081
  • Received:2020-07-27 Accepted:2020-08-25 Online:2021-02-01 Published:2021-02-16
  • Contact: YuLin GAO

摘要:

【目的】马铃薯块茎蛾(Phthorimaea operculella)是马铃薯上的重要害虫,严重影响马铃薯的产量和品质。明确马铃薯块茎蛾对不同品种块茎的适应性,为马铃薯抗性品种筛选以及制定有效的害虫综合治理策略提供依据。【方法】以目前生产上商业化推广的4个马铃薯品种(夏波蒂、龙薯4号、龙薯12号、克新17号)块茎为试验材料,采用年龄-阶段特定两性生命表,测定不同品种块茎上马铃薯块茎蛾的发育历期和种群参数,以评价马铃薯块茎蛾在不同品种上的适应性。【结果】取食不同品种块茎的马铃薯块茎蛾幼虫期、蛹期和雌成虫寿命存在显著差异。其中取食克新17号的马铃薯块茎蛾幼虫期(15.18 d)和蛹期(8.10 d)相较于取食其他3个品种(夏波蒂、龙薯4号、龙薯12号)长,而雌成虫寿命(8.46 d)较短。另外,取食同种品种块茎的马铃薯块茎蛾雄成虫寿命普遍高于雌成虫。取食不同品种块茎的马铃薯块茎蛾单雌产卵量存在显著差异,取食夏波蒂(235.06粒)和龙薯4号(254.48粒)的马铃薯块茎蛾单雌产卵量显著多于取食克新17号(165.71粒)。取食不同品种块茎的马铃薯块茎蛾内禀增长率(r)、周限增长率(λ)、净增殖率(R0)和平均世代时间(T)等种群参数存在极显著差异。其中取食克新17号的马铃薯块茎蛾的rλR0值(r=0.108,λ=1.125,R0=26.513)均显著低于其余3个品种,T值(30.28)显著高于其余3个品种。在幼虫选择性取食试验中,1龄马铃薯块茎蛾幼虫尤为偏好龙薯4号和夏波蒂,对克新17号选择性最低, 并随着龄期的增长,选择性逐渐降低。【结论】马铃薯块茎蛾对不同品种薯块的适应性不同,在夏波蒂和龙薯4号上适应性较好,龙薯12号次之,克新17号种群建立水平最低。在马铃薯块茎蛾危害严重区域,可以考虑选择种植马铃薯块茎蛾适应性较低的品种,作为田间抑制马铃薯块茎蛾种群的一个重要策略。

关键词: 马铃薯块茎蛾, 年龄-阶段特定两性生命表, 马铃薯品种, 品种适应性

Abstract:

【Objective】Potato tuberworm (Phthorimaea operculella) is an important pest on potatoes, which seriously affects the quality and value of potatoes. The objective of this study is to clarify the adaptability of P. operculella on different potato tuber varieties, and to provide a basis for screening resistant potato varieties and developing effective integrated pest management strategy.【Method】To evaluate the adaptability of P. operculella on different tuber varieties and screen the high natural-resistance tubers, in this study, four varieties (Xiabodi, Longshu No. 4, Longshu No. 12 and Kexin No. 17) which were planted in a large scale at present were selected as tested materials to determine the development and population parameters of P. operculella on different tuber varieties using an age-stage specific two-sex life table.【Result】There were significant differences in larval stage, pupal stage and female longevity of P. operculella feeding on different tuber varieties. Compared with those fed on Xiabodi, Longshu No. 4 and Longshu No. 12, those fed on Kexin No. 17 exhibited significantly longer larval stage (15.18 d) and pupal stage (8.10 d), and the female longevity (8.46 d) was shorter than the other three varieties. Moreover, the longevity of male was significantly higher than female in a same variety. The fecundity of P. operculella feeding on Xiabodi (235.06 eggs) and Longshu No. 4 (254.48 eggs) was significantly larger than that fed on Kexin No. 17 (165.71 eggs). In addition, there were significant differences among intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R0) and mean generation time (T) of P. operculella feeding on different tuber varieties. The r, λ, R0 values of P. operculella fed on Kexin No. 17 (r=0.108, λ=1.125, R0=26.513) were significantly lower than those on the other three tuber varieties, and T value of P. operculella fed on Kexin No.17 (30.28) was significantly higher than those on the other three tuber varieties. Larvae feeding preference experiments showed that the larvae fed on Xiabodi and Longshu No. 4 in preference to Kexin No. 17. With the increase of age, the selectivity gradually decreased. 【Conclusion】There was a different adaptability of P. operculella among different potato tuber varieties. Xiabodi and Longshu No. 4 are the most suitable hosts, followed by Longshu No. 12, and Kexin No. 17 is the least suitable host. In areas where P. operculella is seriously damaged on potato field system, planting potato varieties with low adaptability can be selected as an important strategy for reducing population of P. operculella in the field.

Key words: potato tuberworm (Phthorimaea operculella), age-stage specific two-sex life table, potato variety, variety adaptability