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中国农学通报 ›› 2019, Vol. 35 ›› Issue (4): 97-101.doi: 10.11924/j.issn.1000-6850.casb18020055

所属专题: 园艺

• 植物保护 农药 • 上一篇    下一篇

桃蚜与萝卜蚜交互为害对寄主氮营养及蚜虫种间竞争的调节

纪祥龙1, 刘长庆2, 胡玲玲1, 刘勇1   

  1. 1.山东农业大学植物保护学院;2.泰安市农业局
  • 收稿日期:2018-02-11 修回日期:2018-04-13 接受日期:2018-04-19 出版日期:2019-01-31 发布日期:2019-01-31
  • 通讯作者: 刘勇
  • 基金资助:
    国家重点研发计划“作物免疫调控与物理防控技术及产品研发”(2017YFD0200900)。

Mutual Damages Mediate Host Nitrogen Nutrition and Interspecific Competition Between Myzus persicae and Lipaphi erysimi

  • Received:2018-02-11 Revised:2018-04-13 Accepted:2018-04-19 Online:2019-01-31 Published:2019-01-31

摘要: 桃蚜和萝卜蚜是十字花科蔬菜的主要害虫,常在同种蔬菜作物上混合发生。为深入了解2者的种间互作关系和潜在的竞争机制,研究了2种蚜虫分别为害后,对其寄主甘蓝的氮素营养,以及后取食的异种蚜虫的生命特性和种群数量变动的调节作用。结果表明:桃蚜为害的甘蓝植株,可显著降低在被害叶上后取食的萝卜蚜的种群数量、种群净生殖率和生物量增长率,也可显著降低在系统叶上的净生殖率;而萝卜蚜取食为害,仅可使被害叶上桃蚜种群净生殖率降低。桃蚜为害后,甘蓝叶片的谷氨酸含量显著上升,异亮氨酸含量显著降低;而萝卜蚜为害后的蛋氨酸含量显著升高。由此可见,桃蚜危害介导的甘蓝体内游离氨基酸含量的变化可能抑制了萝卜蚜的生长发育,多食性的桃蚜比寡食性的萝卜蚜也许具有更高的进化发育适应性。

关键词: 三角叶薯蓣, 三角叶薯蓣, 密度, 肥料, 产量

Abstract: Myzus persicae and Lipaphi serysimi are the main insect pests of cruciferous vegetables, they are often combined in the same vegetable crops. In order to understand the interspecific interaction and potential competition mechanism of the two species, the mutual damages mediate host nitrogen nutrition andthe life characteristics and population quantity of the two aphid species were studied. The results showed that the cabbage plant damaged by M. persicae can significantly reduce the population quantity, population net reproductive rate, biomass growth rate on the damaged leaves of L. erysimi, as well as the net reproductive rate on the systemic leaves. The net reproductive rate of M. persicae infested on cabbage leaves damaged by L. erysimi was lowered. The content of glutamic acid increased and isoleucine content decreased significantly in cabbage leaves after M. persicae damage, while methionine content increased significantly after L. erysimidamage. The results suggested that changes of amino acids content mediated by M. persicae damage to cabbage plant could inhibit the growth and development of L. erysimi. PolyphagousM. persicae might have higher evolutionary developmental fitness than oligophagousL. erysimi.

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