Abstract:

Two morphologically and molecularly distinguished advanced breeding lines，Lü Qie
（Solanum melongena L.）‘131’and Shanghai Qie（Solanum melongena L.）‘141’，were selected for
mapping parents. An F2 population including 237 individuals was obtained. A total of 450 pairs of SSR
markers were used to construct linkage map and therefore to locate QTL related to fruit weight，fruit
length，fruit diameter，fruit shape index and fruit calyx size. The results showed that only 63（14%）markers
showed polymorphism between two parents. A total of 53 SSR markers were mapped into 13 linkage
groups，including 12 chromsomes. The map spanned 532.2 cM. The distance between loci varied from 0.2
to 45.9 cM，with the average distance of 10.04 cM. Nine QTLs for fruit-related traits were detected，
including 1 QTL for fruit weight，1 QTL for fruit length，2 QTLs for fruit diameter，3 QTLs for fruit shape
index and 2 QTLs for fruit calyx size.

Key words: eggplant, linkage map, SSR, fruit trait