Selected tomato germ plasm representing eight Lycopersicon species and five cultivars of L. esculentum was evaluated for resistance to a Hawaiian isolate of tomato spotted wilt tospovirus (formerly designated TSWV-L). A comparison of mechanical and thrips inoculation of TSWV across these accessions demonstrated that the two inoculation methods provide different evaluations of tomato germ plasm. Mechanical inoculation was useful in identifying direct TSWV resistance, such as virus replication and translocation. In contrast, thrips inoculation was most useful in identifying insect-mediated components of TSWV resistance, such as those associated with changes in feeding behavior
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Narendra Kumar (1993) studied this question.