Biochemical Responses Associated with Resistance to Nilaparvata lugens (St(a)l) in Wild Rice Accessions

摘要

Brown planthopper(BPH),Nilaparvata lugens(Stal),is a destructive insect pest of rice.It damages the plants by sucking the plant sap from the phloem tissues and results in wilting of plants due to reduced chlorophyll and protein contents.Severely attacked plants do not bear any grains and cause'hopper bum*condition(Catindig et al,2009).Both nymphae and adults suck sap primarily at the base of the tillers,and therefore their presence goes undetected.BPH is also responsible for transmitting various viral diseases like grassy stunt,ragged stunt and wilted stunt(Win et al,2011).The blanket use of insecticides to control this pest has resulted in natural enemy death,environmental pollution,insecticide resistance and population resurgence.Therefore,there is dare need to develop alternative management strategy for this pest,and host plant resistance can be the effective,economical and chemical-free approach to control BPH.