Abstract: The wild species of tomato，Solanum habrochaites LA2329 has high levels of resistance to
whitefly（Bemisia tabaci） and is thus an important resource for breeding of insect resistance. A linkage
map that covered 1 166.6 cM of the tomato genome and included 180 markers was generated based on the
BC1 population of generated from tomato cultivar 9706 crossed with Solanum habrochaites LA2329.
Parents，F1 and BC1 population were bioassayed with whiteflies using an in vitro method. Four
phenotypic traits including number of adult whiteflies per leaflet，number of eggs per leaflet and densities
of type Ⅵ trichomes on adaxial and abaxial surfaces were evaluated. A total of 33 QTLs associated with
the four phenotypic traits were found in the BC1 population. The adult whitefly numbers had a significant
positive relationship with oviposition numbers in the BC1 population. Eight QTLs associated with adult
whitefly numbers and ovipitision numbers were located in the same locus. Of the 8 QTLs，2 major QTLs
were located in the interval defined by the markers InDel_FT45–SSR57 and SSR57–InDel_FT49 on
chromosome 2 and explained 33.2% and 39.8% of phenotypic variation，respectively. A QTL cluster that
associated with density of type Ⅵ trichomes on abaxial surfaces was mapped on chromosome 6. Four
major QTLs affecting density of Ⅵ trichomes in abaxial surfaces were located in the interval defined by
C2_At3g11210–C2_At1g24360 and explained 56% of phenotypic variation. Four QTLs associated with
density of type Ⅵ trichomes on adaxial surfaces were mapped to the same locus as 4 of QTLs associated
with adult whitefly numbers and oviposition numbers，but their additive effects were opposite. The results
showed that adult whitefly numbers and ovipitision numbers were measures of similar phenotypic traits for
resistance to whiteflies. In addition，density of type Ⅵ trichomes on tomato was not the major trait of
tomato to whitefly resistance.

Key words: Solanum habrochaites, Bemisia tabaci, adult whitefly, oviposition number, density of Ⅵ trichome, QTL