Pigeonpea lectin was extracted by ammonium sulfate fractionation.After purified by affinity chromatography on a ConA-Sepharose 4B column,it was added into an artificial holidic diet to feed aphids.The result showed that lectin from all the varieties of pigeonpea had anti-aphid effect to various extensions,which may be sorted descending as ICP 8863>ICPL 85010>ICPL 99066>ICPL 7035>ICPH 8>ICPL 9008>ICP 6997 >HaiNan>ICPL 87091>ICPL 87119.
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