[1]侯佳丽,李保平,孟玲.取食干旱胁迫小麦对黏虫及其寄生性斑痣悬茧蜂生长发育的影响[J].南京农业大学学报,2018,41(2):302-307.[doi:10.7685/jnau.201707015]
 HOU Jiali,LI Baoping,MENG Ling.Effects of drought stress on developmental performances of Mythimna separata and its parasitoid Meteorus pulchricornis[J].Journal of Nanjing Agricultural University,2018,41(2):302-307.[doi:10.7685/jnau.201707015]
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取食干旱胁迫小麦对黏虫及其寄生性斑痣悬茧蜂生长发育的影响()
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《南京农业大学学报》[ISSN:1000-2030/CN:32-1148/S]

卷:
41卷
期数:
2018年2期
页码:
302-307
栏目:
出版日期:
2018-03-27

文章信息/Info

Title:
Effects of drought stress on developmental performances of Mythimna separata and its parasitoid Meteorus pulchricornis
作者:
侯佳丽 李保平 孟玲
南京农业大学植物保护学院/农作物生物灾害综合治理教育部重点实验室, 江苏 南京 210095
Author(s):
HOU Jiali LI Baoping MENG Ling
College of Plant Protection/Key Laboratory of Integrated Management of Crop Diseases and Pests, Minisity of Education, Nanjing Agricultural University, Nanjing 210095, China
关键词:
小麦干旱胁迫黏虫斑痣悬茧蜂植物与天敌互作气候变化生物学
Keywords:
wheatdrought stressMythimna separataMeteorus pulchricornisplant-natural enemy interactionclimate change biology
分类号:
Q968.1;S433.3
DOI:
10.7685/jnau.201707015
摘要:
[目的]本研究旨在探究取食干旱胁迫下小麦的黏虫及其幼虫寄生性斑痣悬茧蜂的生长发育表现。[方法]采用聚乙二醇(PEG6000)模拟干旱条件,设置不同干旱胁迫水平(0、0.05、0.10和0.20 g·mL-1 PEG6000)处理盆栽小麦造成生理性干旱,然后接黏虫初孵幼虫于叶上取食直至成虫羽化,观察其生活史和形态特征;并以3龄幼虫为寄主供斑痣悬茧蜂寄生,观察寄生蜂生活史和形态特征。[结果]干旱胁迫小麦对黏虫的发育历期、存活率、蛹体鲜质量、成虫体干质量等有显著影响。与对照相比,高水平干旱胁迫(0.20 g·mL-1 PEG6000)下黏虫幼虫的发育历期延长4.60%,存活率降低21.00%,蛹体鲜质量下降11.76%,成虫体干质量减小33.33%。干旱胁迫处理对斑痣悬茧蜂子代蜂的卵+幼虫发育历期、茧鲜质量和雌成虫后足胫节长度具有显著影响。低水平干旱胁迫(0.05 g·mL-1 PEG6000)下显著延长斑痣悬茧蜂子代蜂幼虫的发育历期,从对照的9.55 d延长至10.15 d,但高水平干旱处理的发育历期与对照无显著差异;与对照相比,高水平干旱胁迫处理的蜂茧鲜质量下降0.31 mg,雌成虫后足胫节长度缩短近0.04 mm,而低水平干旱处理与对照无显著差异。[结论]干旱胁迫小麦对取食叶片的黏虫生长发育具有不利影响,并通过黏虫幼虫寄主对斑痣悬茧蜂子代蜂的生长发育产生间接负面影响。
Abstract:
[Objectives]The study aimed at examining how drought stress on wheat plants influenced developmental performances of the caterpillar Mythimna separata feeding on the plants and its larval parasitoid Meteorus pulchricornis. [Methods]Drought treatments at varying levels of PEG6000 in water were applied to potted wheat seedlings,on which M. separata neonate larvae fed to complete the development. The 3rd instar caterpillar was provided as the host to M. pulchricornis for parasitism. The host and its parasitoid developmental parameters were estimated. [Results]The drought treatment decreased M. separata larval duration,survival,pupa body fresh weight,and adult body dry weight,compared to the controls. Compared to the control,the high level drought treatment(0.20 g·mL-1 PEG6000) extended larval development time by 4.60%,reduced larval survival by 21.00%,reduced pupa weight by 11.76%,and decreased adult body weight by 33.33%. The low level drought(0.05 g·mL-1 PEG6000) extended M. pulchricornis egg-larval duration to 10.15 d on average,as compared to the control(9.55 d),while the high level was not different from the control. The high level of drought decreased parasitoid pupa body fresh weight by 0.31 mg and shortened female adult hind tibia length by ca. 0.04 mm,as compared to the control,while the low level treatment was not different from the control. [Conclusions]The results of this study suggest that drought stress on wheat crop plants can impair the development of M. separata feeding on the plant and have an indirect,adverse effect on the development of the parasitoid M. pulchricornis attacking the larvae.

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备注/Memo

备注/Memo:
收稿日期:2017-07-07。
基金项目:国家重点研发计划项目(2017YFD0201000)
作者简介:侯佳丽,硕士研究生。
通信作者:孟玲,教授,研究方向为昆虫生态学和害虫生物防治,E-mail:ml@njau.edu.cn。
更新日期/Last Update: 1900-01-01