摘要
【目的】明确高CO_(2)浓度下西花蓟马在烟草上的发育和繁殖特征,为在大气CO_(2)浓度不断升高背景下有效控制烟田西花蓟马种群数量,降低烟草番茄斑萎病的发生危害提供科学依据。【方法】分别在400和800μL/L CO_(2)浓度人工气候箱中用离体四季豆豆荚和烟叶饲养西花蓟马,研究2种CO_(2)浓度下取食四季豆和烟草的西花蓟马各龄期发育历期、存活率、繁殖力(性比、雌成虫寿命、平均产卵期、单雌平均产卵量、单雌日均产卵量)和种群参数[净生殖率(R_(0))、平均世代周期(T)、内禀增长率(r_(m))、周限增长率(λ)、种群加倍时间(DT)],诠释高CO_(2)浓度下西花蓟马在烟草上的生长发育与繁殖特征。【结果】在400和800μL/L CO_(2)浓度下西花蓟马均能在烟草上正常生长发育和繁殖,但其1龄若虫至成虫的累计存活率仅为46.67%和55.00%,为相同CO_(2)浓度下取食四季豆的西花蓟马的52.84%和60.00%,且成虫寿命显著缩短(P<0.05,下同),卵期、1~2龄若虫及未成熟期发育历期显著延长。相同CO_(2)浓度下,取食烟草的西花蓟马R_(0)、T、r_(m)和λ均显著低于取食四季豆的西花蓟马,且DT显著长于取食四季豆的西花蓟马;取食烟草的西花蓟马雌成虫寿命、平均产卵期、单雌平均产卵量和单雌日均产卵量在400μL/L CO_(2)浓度下为取食四季豆的53.03%、45.40%、26.32%和55.73%,而800μL/L CO_(2)浓度下仅为取食四季豆的49.60%、44.03%、23.55%和54.75%。高CO_(2)浓度下取食烟草的西花蓟马1~2龄若虫及未成熟期的发育历期显著长于正常CO_(2)浓度下西花蓟马的发育历期,而取食四季豆的则相反;高CO_(2)浓度下取食四季豆和烟草的西花蓟马未成熟期的存活率均高于或等于正常CO_(2)浓度下西花蓟马的存活率,且性比增加,平均产卵期延长,单雌平均产卵量和单雌日均产卵量亦有所提高;种群参数R_(0)、r_(m)和λ均显著升高,DT显著缩短。【�
【Objective】This study was designed to clarify the development and reproduction characteristics of Frankliniella occidentalis on tobacco under high CO_(2) concentration,and lay a foundation for pest control under the background of increasing atmospheric CO_(2) concentration,and reducing the occurrence of tomato spotted wilt virus(TSWV)on tobacco.【Method】The developmental time,survival rate,fecundity(offspring sex ratio,female life span,average oviposition period,oviposition rate per female and daily oviposition rate per female)and population parameters[net reproductive rate(R_(0)),generation span(T),intrinsic rate of increase(r_(m)),increment rate per unit(λ)and the time of double population size(DT)]of F.occidentalis were measured for F.occidentalis fed on isolated kidney bean and tobacco leaves under 400μL/L and 800μL/L CO_(2) concentrations in artificial climate chambers,which was to interpret the growth and reproduction characteristics of F.occidentalis on tobacco under high CO_(2) concentration.【Result】Under the two CO_(2) concentrations(400μL/L and 800μL/L),F.occidentalis could grow,develop and reproduce normally on tobacco,but the cumulative survival rate from the 1^(st) instar to adults were only 46.67%and 55.00%,respectively,which were 52.84%and 60.00%of those on kidney bean under the same CO_(2) concentration,adult longevity was significantly shortened(P<0.05,the same below),and the developmental durations of egg,1^(st)-2^(nd) instar and the immature stage of F.occidentalis fed on tobacco were significantly prolonged.Under the same CO_(2) concentration,R_(0),T,r_(m) and λ of F.occidentalis fed on tobacco were significantly lower than those on kidney bean,and DT was significantly increased;female life span,average oviposition period,oviposition rate per female and daily oviposition rate per female of F.occidentalis fed on tobacco were 53.05%,45.40%,26.32%and 55.73%of those on kidney bean under normal CO_(2) concentration(400μL/L),respectively,while they were only 49.60%,44.03%,23.55%and
作者
段艳茹
和淑琪
陈亚平
马若
杨军章
桂富荣
DUAN Yan-ru;HE Shu-qi;CHEN Ya-ping;MA Ruo;YANG Jun-zhang;GUI Fu-rong(College of Plant Protection,Yunnan Agricultural University,Kunming 650201,China;Zhaotong Branch,Yunnan Tobacco Company,Zhaotong,Yunnan 657000,China;Yunnan Plateau Characteristic Agriculture Industry Research Institute,Kunming 650201,China)
出处
《南方农业学报》
CAS
CSCD
北大核心
2021年第2期404-411,共8页
Journal of Southern Agriculture
基金
国家自然科学基金项目(31960565)
中国烟草总公司云南省公司科技计划项目(2019530000241009)。
关键词
CO_(2)浓度
烟草
西花蓟马
生长发育
繁殖力
CO_(2)concentration
tobacco
Frankliniella occidentalis
development and growth
fecundity
