پارامتر‌های زیستی بید سیب‌زمینی، (Phthorimaea operculella (Zeller) (Lep.: Gelechiidae روی برگ سه رقم سیب‌زمینی در شرایط آزمایشگاهی

Potato tuber moth, Phthorimaea operculella one of the important pests of potato in field and storage. Different insecticides are used in order to control the damage of the potato tubers' larvae in the storage and in the farm, but as the result of the continuous use of these insecticides their vestiges remain on the stored tubers and the potato tuber moth pests resist the insecticides. The usage of resistant varieties of plants can help as a supplement for biological and chemical control in integrative pest management programs. So that the resistance of three potato cultivars (Banba, Bellini and Draga), which are common cultivars in Kurdistan province to potato tuber moth was assessed by studying the biological and the demographic effect of the mentioned pest. This experiment was carried out in a growth chamber, 25 ±2°C, 65 ±5% RH and 14L:10D h photoperiod. According to the results, the potato leaf cultivars had a significant effect on the period of egg, larva, pupa, preadult, male life span and male adult longevity of this pest (P<0.05), but there were not significantly difference on the period of female life span and female adult longevity (P>0.05). In addition, in this study, reproduction parameters of potato moth including APOP, TPOP, oviposition period and total fecundity were not significant among the potato leaf cultivars (P>0.05). Also studying the life table parameters showed there were not significant difference between the three cultivars, however the least intrinsic rate of increase (r) on Draga (0.092 day-1), the least net reproductive rate (R0) on Draga (9.8 offspring), the lest finite rate of population increase (λ) on Draga (1.096 day-1) and the highest period of generation time (T) on Draga (24.88 days).