Age specific reproduction parameters of cotton whitefly (Bemisia tabaci) and silverleaf whitefly (B. Argentifolii) on cotton and rapeseed
2006
Samih, M.A. (Vali e Asr University, Rafsanjan (Iran). Dept. of Plant Protection) | Izadi, H.
The age specific reproduction parameters of sweet-potato whitefly, Bemisia tabaci (Genn.) and silverleaf whitefly, Bemisia argentifolii Bellows and Perring (Hom: Aleyrodidae) were studied in the laboratory on cotton and rapeseed. Infested leaves containing nymphs and pupae of either were collected from cotton fields in Iran. Experiments were conducted in a growth chamber under 24 plus minus 2 degree C, 55 plus minus 3% RH and 16:8 h (L: D) photoperiod on caged plants of cotton, Gossypium hirsutum L. (Var. Varamin 76) and rapeseed, Brassica napus L. (Var. Global). Gross fecundity rate and gross fertility rate, for B. tabaci reared on cotton and rapeseed were 66.38; 84.54 and 45.57; 56.91, respectively and for B. argentifolii these parameters averaged 71.85; 131.4 and 48.93; 87.01 on the respective host plants. The results revealed significant differences between species/host plants for gross fecundity rate, gross fertility rate, mean age gross fecundity and ferti lity, mean age hatch, parameters but there were no significant differences in gross hatch rate, net fecundity rate, net fertility rate, mean age net fecundity and fertility, number of eggs female- 1/day-1 and daily reproductive rate in both species. The study revealed a greater reproduction capacity of both whitefly species on rapeseed than cotton.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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