The feeding behavior and oviposition preference of brown planthoppers (BPH), Nilaparvata lugens Stl, on rice varieties TN1 (susceptible), IR36 (with resistant gene bph2), Hanyou 3 (droughttolerant) were determined under drought stress simulated with polyethylene glycol (PEG6000) in laboratory. In the choice test, the percentage of BPH female adult on rice plants under different concentrations of PEG6000 decreased significantly with the rising PEG6000 concentration (P<0.001).However, no marked difference in the percentage of BPH nymph was found (P=0.093). The number of BPH eggs per plant within 72 h was negatively correlated with the concentration of PEG6000 on TN1 and IR36 (P=0.001 and P=0.008, respectively). On the rice plants of IR36 and Hanyou 3, BPH nymph tended to move from uppermiddle to basal part of leaf sheath when the PEG6000 concentration increased. However, it didn’t happen on TN1. The amount of honeydew per female adult within 48h reduced on TN1 and Hanyou 3 with the increasing concentration of PEG6000, while on IR36 it was very low and no significant difference was found under different concentrations of PEG6000.
LUO Ding1,2, XU Hongxing1, YANG Yajun1, ZHENG Xusong1, LU Zhongxian1,*
. Feeding Behavior and Oviposition Preference of Brown Planthoppers,Nilaparvata Lugens, on Different Rice Varieties under Drought Stress Stimulated by Polyethylene Glycol (PEG6000)[J]. Chinese Journal OF Rice Science, 2012
, 26(6)
: 731
-736
.
DOI: 10.3969/j.issn.10017216.2012.06.013
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