Screening of tomato hybrids for bacterial wilt (Ralstonia solanacearum) resistance under field condition

Bacterial wilt is caused by Ralstonia solanacearum is a most destructive and prevalent disease in worldwide causing enormous yield losses in tomato. In the present study, eight parental lines along with their twenty-eight F₁ hybrids were evaluated against bacterial wilt. Among the parents, two parents CHFT-71 and CHFT-50, showed moderately resistant against wilt. However, none of the parents recorded a highly resistant and immune to the bacterial wilt. Only single cross, CHFT-71×CHFT-50 showed a wilt resistant and four hybrids namely, CHFT-77×CHFT-71, CHFT-79×CHFT-50, CHFT-60×CHFT-50 and H-86×CHFT-50 were found to be moderately resistant against wilt. These five hybrids can be recommended for further evaluation. The promising parental lines can be utilised for the improvement of varieties and development of wilt resistant F₁’s through hybrid breeding programmes.