Abstract: In order to promote the application of new varieties of Hemerocallis citrina Baroni.The volatile components of different parts (petals,stamens,flowering,sundried flowers,boiled flowers) of lyophilized and heating samples from H. citrine Baroni (HaoYunLai and XinXinXiangYin) were determined by head space solid-phase microextraction combined with gas chromatography-mass spectrometry.The NIST.17 mass spectrometry data base and the peak area normalization method were used to retrieve and analysis the relative content of each component.59 compounds were identified in the flower parts of the HaoYunLai and 60 compounds were identified in the flower parts of the XinXinXiangYin.3-furanmethanol and nonanal are the major components in the flower parts of two varieties.The content of 3-furanmethanol is the highest in boiled flowers part and nonanal is the highest in the flowering part of two varieties.This study provide reference for the subsequent rational development of new varieties of H. citrine Baroni.

Key words: Hemerocallis citrina Baroni, volatile composition, HS-SPME, GC-MS