关键词: 黄瓜, 果皮光泽, 遗传分析, SSR, 基因定位

Abstract: Glossy fruit skin is one of the highly valuable appearance quality traits related to market
values of cucumber（Cucumis sativus L.）. Inbred line‘1101’（glossy fruit skin）and inbred line‘1116’
（dull fruit skin），‘9930’（dull fruit skin），‘1107’（dull fruit skin）were used as experiment materials
for genetic analysis and gene mapping in this study. Genetic analysis showed that a single dominant
nuclear gene，G（glossy fruit skin），determines the glossy fruit skin trait in cucumber. Bulked segregate
analysis（BSA）and simple sequence repeat （SSR）technologies were employed to map G gene of cucumber
in‘1101’ב1116’F2 population. G gene was mapped to a linkage group with 30 SSR markers，
corresponding to chromosome 5 of cucumber. The flanking markers CS28 and SSR15818 were linked to
the G gene with genetic distances of 2.0 and 6.4 cM，respectively. The physical distance between the two
markers was 454 kb based on the whole genome sequence of cucumber，and there are 177 candidate genes
in this region.

Key words: cucumber, glossy fruit skin, genetic analysis, SSR marker, gene mapping