温度和光周期对绿盲蝽滞育诱导的影响

为了阐明环境因子对绿盲蝽Apolygus lucorum Meyer-Dür卵滞育诱导作用,测定了3个温度和6个光周期组合处理对绿肓蝽的滞育诱导和绿盲蝽光周期感应的敏感虫态,系统调查了绿肓蝽在不同温度和不同光照组合下所产卵的孵化率.结果表明:绿盲蝽的敏感虫态为1龄若虫；在17℃,20℃和23℃3个不同温度下,光照时间小...

Effects of photoperiod and temperature on diapause induction of Apolygus lucorum Meyer-Diir ( Hemiptera: Miridae)

To understand the effects of temperature and photoperiod on egg diapause induction of Apolygus lucorum Meyer-Dür, the hatch rate of A. lucorum eggs laid by those rearing at 3 temperatures and 6 photoperiods were systematically investigated. The results indicated that the 1st instar larvae of A. lucorum was the sensitive stage. The daylength less than 14 h was beneficial to diapause, while the daylength more than 14 h was beneficial to growth and diapause inhabitation at three different temperatures (17℃， 20℃，and 23℃). Short daylength had a cumulative effect on diapause induction. The diapause rate decreased with the increase of temperature in the daylength from 10 h to 14 h, and temperature had no effect on diapause induction in the daylength more than 14 h. The critical photoperiods of A. lucorum were 13 h 10 min∶10 h 50 min （L∶D）， 12 h 58 min∶11 h 2 min （L∶D）and 12 h 51 min∶11 h 9 min （L∶D） at 17℃， 20℃ and 23℃， respectively. The critical daylength shortened with the increase of temperature. The results suggest that A. lucorum is a typical long-day insect, photoperiod is the main factor of diapause induction, temperature is the cofactor of diapause induction, and low temperature in autumn is beneficial to the diapause induction.