Comparative Reproductive Performance of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) Reared on Thirteen Soybean Varieties

Reproduction parameters for Helicoverpa armigera (Hübner) were determined and compared on ۱۳ soybean varieties (DPX, L۱۷, BP, Clark, JK, ۳۵۶, M۴, M۷, M۹, Gorgan۳, Sahar, Zane and Williams) at ۲۵±۱ºC, ۶۵±۵% RH over a photoperiod of ۱۶:۸ (L:D) hours. Reproduction parameters were estimated for individual newly emerged moths, which had spent their immature stages on different soybean varieties. The highest rate of gross fecundity was on M۴ (۲,۲۳۸ eggs female-۱), whereas the lowest value of this parameter was on Gorgan۳ (۴۶۷ eggs female-۱). The gross fertility rate was the highest on M۷ (۷۸۲ eggs female-۱) and lowest on Gorgan۳ (۱۴۹ eggs female-۱). The net fecundity rate varied from ۱۹۲ (BP) to ۱,۲۷۵ eggs (M۷). The net fertility rate was the highest on M۷ (۵۸۶ eggs female-۱) and lowest on Sahar (۵۶ eggs female-۱). The daily number of eggs laid per female ranged from ۵۰ to ۲۸۲ eggs, the minimum on Gorgan۳ and the maximum on M۴. Our results demonstrated that M۹, Williams, Clark, L۱۷, M۷, M۴ and Zane varieties were more suitable host plants for reproduction of the studied population of H. armigera. The other varieties examined showed less suitability as host plants for H. armigera reproduction.

کلیدواژه ها:

Helicoverpa armigera ، Resistance ، reproduction parameters ، Soybean varieties