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Position: Home > Articles > Studies on diapause induction of Orthaga achatina Plant Protection 2012,38 (4) 124-126+130

樟巢螟滞育诱导特性的研究

作  者：
陶娟;万华星;谢立群
单  位：
苏州大学园艺系
关键词：
樟巢螟;滞育;光周期;敏感虫期
摘  要：
为探求诱导樟巢螟(Orthaga achatina Butler)滞育的临界光周期及敏感虫态(期),在室内25℃和28℃下观察不同光周期对樟巢螟滞育的影响,并利用不同长光照和短光照组合对樟巢螟幼虫的不同龄期进行处理,掌握樟巢螟的敏感虫态(期)。结果表明光周期为L∥D=12.0h∥12.0h,L∥D=12.5h∥11.5h,L∥D=13.0h∥11.0h时,在25℃下,樟巢螟的滞育率分别为100%,94.80%和97.60%;在28℃下,滞育率分别为98.55%,99.05%和83.50%。当光周期为L∥D=13.5h∥10.5h,在25℃和28℃下,樟巢螟的滞育率分别为42.38%和34.05%。樟巢螟属长日照发育型昆虫,在25℃时诱导滞育的临界光周期是13.565h,在28℃时是13.364h。25℃时樟巢螟对光照反应最敏感的时期是4～5龄期,1～3龄次之,卵期最不敏感。
译  名：
Studies on diapause induction of Orthaga achatina
作  者：
Tao Juan,Wan Huaxing,Xie Liqun(Department of Horticulture,Soochow University,Suzhou 215123,China)
关键词：
Orthaga achatina;diapause;photoperiod response;sensitive stage
摘  要：
The critical photoperiod of diapause induction and the sensitive stage of Orthaga achatina Butler to photoperiod were investigated.The diapause reactions to different photoperiods were observed at 25 ℃ and 28 ℃ in the constant temperature incubator,and the sensitive stage was investigated by long and short photoperiod combination at different instars of this insect.When the photoperiods were L∥D=12.0 h∥12.0 h,L∥D=12.5 h∥11.5 h and L∥D=13.0 h∥11.0 h,the diapause rates of the insect were 100%,94.80% and 97.60% at 25 ℃ and 98.55%,99.05% and 83.50% at 28 ℃,respectively.At the same time,when photoperiod was L∥D =13.5 h∥10.5 h,the diapause rates were 42.38% at 25 ℃ and 34.05% at 28 ℃.The photoperiodic response curves in O.achatina showed that this insect was a long-day development species with a critical day length of 13.565 h at 25 ℃ and 13.364 h at 28 ℃.The sensitive stage to the short light(12 h) was the 4th-5th instars at 25 ℃,while the 1st-3rd instars were less sensitive,and the egg stage was the insensitive stage to short light.

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