[1]徐健,李传明,韩光杰,等.颗粒体病毒（CnmeGV）对稻纵卷叶螟的感染及害虫种群增长的影响[J].江苏农业学报,2018,(01):29-33.[doi:doi:10.3969/j.issn.1000-4440.2018.01.004]
　XU Jian,LI Chuan-ming,HAN Guang-jie,et al.The effect of Cnaphalocrocis medinalis granulovirus (CnmeGV) on larva infection and population regulation of rice leaffolder[J].,2018,(01):29-33.[doi:doi:10.3969/j.issn.1000-4440.2018.01.004]
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颗粒体病毒（CnmeGV）对稻纵卷叶螟的感染及害虫种群增长的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年01期
页码:
29-33
栏目:
植物保护
出版日期:
2018-02-25

文章信息/Info

Title:
The effect of Cnaphalocrocis medinalis granulovirus (CnmeGV) on larva infection and population regulation of rice leaffolder
作者:
徐健1; 李传明1; 韩光杰1; 徐彬1; 祁建杭2; 孙俊2; 刘琴1
（1.江苏里下河地区农业科学研究所，江苏扬州225007；2.扬州绿源生物化工有限公司，江苏扬州225008）
Author(s):
XU Jian1; LI Chuan-ming1; HAN Guang-jie1; XU Bin1; QI Jian-hang2; SUN Jun2; LIU Qin1
(1.Institute of Agricultural Science of the LiXiahe District in Jiangsu Province, Yangzhou 225007, China; 2. Yangzhou Luyuan Bio-chemical Co. Ltd., Yangzhou 225008, China)
关键词:
稻纵卷叶螟; 颗粒体病毒; 病毒侵染; 种群调控
Keywords:
Cnaphalocrocis medinalis; granulovirus; virus infection; population regulation
分类号:
S476+.13
DOI:
doi:10.3969/j.issn.1000-4440.2018.01.004
文献标志码:
A
摘要:
CnmeGV是侵染稻纵卷叶螟的专性杆状病毒。本研究旨在明确田间条件下CnmeGV对稻纵卷叶螟的侵染及种群增长的影响。结果表明，在田间条件下，CnmeGV对稻纵卷叶螟具有较强的致病性，7.500×105OB/m2和1.125×106OB/m2田间喷洒24 d后，害虫感病显症幼虫比例达 69.16%～70.77%。感染病毒幼虫威布尔频数分布拟合存活率曲线表现为死亡率是年龄的增函数，死亡主要发生在幼虫中后期的感病个体中，不同浓度致死中时间为 20.16～21.98 d。种群生命表参数表明CnmeGV对稻纵卷叶螟种群具有明显的干扰控制作用，不同浓度病毒处理区的种群控制指数（IPC）为 0.31～0.32。CnmeGV对稻纵卷叶螟具有致病力强，感病幼虫死亡周期长的特点，田间应用CnmeGV可以显著降低害虫种群增长趋势指数，有效抑制稻纵卷叶螟种群增长。
Abstract:
CnmeGV is a specialized baculovirus and can infect the larvae of rice leaffolder [Cnaphalocrocis medinalis (Guenée)]. The purpose of this paper was to explore the effect of CnmeGV on larvae infection and population regulation of rice leaffolder in rice paddy. CnmeGV had great pathogenicity to the larvae of rice leaffolder in the field. After spraying CnmeGV for 24 days at the concentrations of 7.500×105OB/m2 and 1.125×106OB/m2, larva infective rates ranged from 69.16% to 70.77%. Survival rate curve of infected larva fitted with the model of Weibull frequency was an increasing function of mortality-age, larvae mortality mainly happened in middle and late period. Median lethal time ranged from 20.16 d to 21.98 d at different concentrations.Parameters from life table of natural population indicated that CnmeGV had significant interference effect on the population of rice leaffolder. Index of population control under different concentrations ranged from 0.31 to 0.32. CnmeGV had strong pathogenicity to the rice leaffolder, and the larvae had long death cycle. Field application of CnmeGV reduced the population trend index remarkably and restrained the population growth of rice leaffolder.

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备注/Memo

备注/Memo:
收稿日期：2017-07-28 基金项目：江苏省“六大人才高峰”项目（2015-NY-048）；江苏省农业三新工程项目[SXGC(2016)224]；江苏省农科院颠覆性计划项目[ZX(17)2002]；江苏省农业自主创新基金项目[CX(15)1057]；扬州市科技支撑计划项目（YZ2015027） 作者简介：徐健（1968-），男，江苏兴化人，博士，研究员，主要从事农业病虫害生物防治研究。（Tel）13901458077；（E-mail）bio-xj@163.com 通讯作者：刘琴，（Tel）0514-87637599；（E-mail）bio-lq@126.com
更新日期/Last Update: 2018-03-06