Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

SETTLING AND FEEDING RESPONSES OF BROWN PLANTHOPPER TO FIVE RICE CULTIVARS (Pages : 10 - 13)

Settling and feeding responses of brown planthopper, Nilaparvata lugens (Stål.) to five rice cultivars were studied in terms of nymphal and adult preference, feeding rate, body weight change, ingested and assimilated food during March to September, 2006 in Entomology Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, Bangladesh. Both nymphs and adults showed distinct non-preference reactions to resistant cultivars Swarnalata and T27A for settling. Swarnalata had the lowest percentage (10.4) of nymphs at 72 hours after release which was at par with T27A while the highest percentage (34.0) of nymphs settled on TN1. On the contrary, the lowest percentage (7.2) of adults settled on T27A which was identical with Swarnalata whereas TN1 was highly preferred by N. lugens female. Adult female feeding on susceptible TN1 excreted the highest amount of 19.8 mg honeydew and gained body weight by 42.0 per cent while they gained the lowest body weight by 8.3 per cent and excreted only 2.1mg of honeydew during 24 hours feeding on resistant T27A. The quantity of food ingested and assimilated by female brown planthopper was also significantly much lower on resistant T27A as compared to that on susceptible TN1. Download