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Journal of Entomology
  Year: 2006 | Volume: 3 | Issue: 4 | Page No.: 305-311
DOI: 10.3923/je.2006.305.311
Comparison of Resistance of Five Oilseed Rape Varieties to the Cabbage Aphid Brevicoryne brassica (Homoptera:aphididae) in the Greenhouse
M. Jamshidi , M.H. Kazemi , P. Talebi-Chaichi and H. Alyari

Abstract:
The cabbage aphid, Brevicoryne brassica was reported from Iran by Afshar in 1317. This pest caused economic damage to cabbage family. The antibiosis mechanism of the resistance was investigated at 4-6 phenological leaf stage, in Uorica, Hayola 401, Hayola 308, Parkland and PF (7045, 91) under glasshouse conditions of 24°C±1, with 65-75% R.H. and photoperiod of 16: 8 (L:D) periods. Antibiosis was determined by studying the percentage survival of the nymphs, duration to their development time, fecundity (total number of progeny per female produced within the first 10 and 15 days reproductive cycle) and finally calculating the relevant intrinsic rate of natural increase (rm values ). The analysis of variance indicated that, there were significant differences (p<0.05) between the varieties. At 4-6 leaf stage, the highest mean rm value (0.3229±7.516E - 0.3 and 0.3210±7.783E - 0.3) was estimated for rearing on Hayola 401 with the smallest (0.1958±1.645E - 0.2 and 0.1957±1.461E - 0.2) on the Pf (7045,91) within the first 10 and 15 day periods respectively. Thus in this study, Hayola 401 is regarded as the most susceptible and the Pf (7045, 91) as the most resistant variety in relation to the aphid.
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How to cite this article:

M. Jamshidi , M.H. Kazemi , P. Talebi-Chaichi and H. Alyari , 2006. Comparison of Resistance of Five Oilseed Rape Varieties to the Cabbage Aphid Brevicoryne brassica (Homoptera:aphididae) in the Greenhouse. Journal of Entomology, 3: 305-311.

DOI: 10.3923/je.2006.305.311

URL: https://scialert.net/abstract/?doi=je.2006.305.311

 
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