Abstract: 【Objective and Method】In order to investigate the host plant preference of Liriomyza huidobrensis on different bean varieties and its relationship with the compound contents in bean leaves, no-choice method was used to test the host plant preference, and acetone spectrophotometry, anthrone colorimetric method, coomassie brilliant blue (CBB) G250 staining, phosphor-molybdenum acid－phosphor-tungstenic acid colorimetry and Soxhlet extraction were applied to measure the contents of lamina’s chlorophyll, soluble sugar, protein, tannin acid and flavone, respectively.【Result】The preference of L. huidobrensis on different bean varieties was significantly different (F=4.678, P<0.0001). The clustering analysis divided all tested bean varieties into three groups according to the levels of the preference of L. huidobrensis. The most favourite varieties included Phaseolus vulgaris cv. Shuangfengerhao, Futianyihaojiadou, Jingpinjiadou, Zihuayoudou, Dachengdidou, Ribenwujinglv, Shuangfengjiadou, Shijijiangdou, Tai-guojiadouwang, Taikongqingmei and Wuchangdayoudou. The secondly favourite varieties were P. vulgaris cv. Jiucunlian, Tianma95-33, Jingxuan73-8, Tianmadidou, Taifengjiadouwang, Futian’erhaojiadou, Manjialian, Taiguojiadou 95-33, Lvlongjiadou, Qiuzidou and Qingdaojiadou. The lest were P. vulgaris cv. Junmadidou, Huajiangbahao, Tianmajialongwang, Chengpaijinglongwang and Xinxuanjiulibai. Chemical component analysis showed that the contents of chlorophyll, protein, soluble sugar, tannic acid and flavone among the tested varieties were significantly different. Correlative analysis showed that the host preference of L. huidobrersis was significantly negatively correlative with the contents of tannic acid and flavone but not with those of chlorophyll, soluble protein and soluble sugar in bean varieties.【Conclusion】 The tannic acid and flavone in the leaves of kidney bean significantly suppress oviposition and/or feeding of L. huidobrersis adults.

Key words: Liriomyza huidobrensis, Host preference, Chemical substance, Kidney bean