907879

Comprative life table parameters of the Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) on corn hybrids under laboratory conditions

Mardani-Talaee، M. نويسنده University of Mohaghegh Ardabili,Iran Mardani-Talaee, M. , Nouri-Ganbalani، G. نويسنده University of Mohaghegh Ardabili,Iran Nouri-Ganbalani, G. , Naseri، B. نويسنده University of Mohaghegh Ardabili,Iran Naseri, B. , Hassanpour، M. نويسنده University of Mohaghegh Ardabili,Iran Hassanpour, M. , Mottaghinia، L. نويسنده University of Mohaghegh Ardabili,Iran Mottaghinia, L. , Mansouri، S. M. نويسنده Graduate University of Advanced Technology,Kerman,Iran Mansouri, S. M.

فصلنامه سال 1394 شماره 63

علمي پژوهشي

11

17

27

SPODOPTERA EXIGUA , Corn hybrids , RM , Survival Rate

The effects of four corn hybrids, Keynes540, Keynes410, KSC260 and KSC400, were investigated on life table parameters of the beet armyworm in a growth chamber that was set at 25 ± 1 ºC, 65 ± 5% RH and 16:8 (L: D) photoperiod. The highest survivorship (lx) of adults were 0.77, 0.70, 0.62 and 0.58 on KSC260, Keynes410, Keynes540 and KSC400, respectively. The highest agespecific fecundity (mx) of females which were emerged from the larvae being fed on abovementioned hybrids were recorded 28.75, 21.70, 20.37 and 16.33 female/ female/ day, that occurred at the days 39, 40, 41 and 45, respectively. The females reared on KSC400 showed the lowest net reproductive rate (R0), while the highest R0 was recorded on KSC260 hybrids. The intrinsic rate of natural increase (rm) ranged from 0.1028 to 0.1370 day1 of which the lowest was on KSC400. The lowest and highest values of finite rate of increase (λ)were obtained on KSC400 and Keynes540, respectively. The longest mean generation time (T)(35.37 ± 0.83 days) was observed on KSC400 and the shortest one (30.67 ± 0.93 days) was on Keynes410. The results showed that KSC400 was the least suitable host for S. exigua.

1394

نامه انجمن حشره شناسي ايران

نامه انجمن حشره شناسي ايران

فصلنامه با شماره پیاپی 63 سال 1394

#تست#آزمون###امتحان