NOVELTY - Method of growing seed from Lycopersicon esculentum plant, involves providing seed (S1) of L.esculentum plant (P1), where the plant comprises within its genome at least one tomato yellow leaf curl virus (TYLCV) resistance (Ty-1) allele and Mi-1 root knot nematode resistance allele, at least one Ty-1 allele and Mi-1 allele are present in coupling phase at different loci on one chromosome and the plant is resistant against TYLCV and root knot nematode species, and growing the seed to provide a second L.esculentum plant (P2) having a fruit.    USE - The method is useful for growing seed from L.esculentum plant having resistance against TYLCV and root knot nematode species chosen from Meloidogyne arenaria, M.incognita and M.javanica.    ADVANTAGE - The method is economical, eco-friendly and harmless. The hybrid plants show reduced genetic drags e.g. autonecrosis and longer internodes, with respect to wild-type plants.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) plant (P3) of L.esculentum obtained from the seed produced by the plant (P2), comprising at least one TY-1 allele and at least one Mi-1 allele in its genome, where the resistance alleles are present in the coupling phase at different loci on one chromosome and the plant is resistant against TYLCV and root knot nematodes; (2) seed (S2) of L.esculentum obtained from the plant (P2), comprising at least one TY-1 allele and at least one Mi-1 allele in its genome; (3) method of selecting a L.esculentum plant having within its genome at least one Ty-1 or Mi-1 allele, involves identifying DNA sequence comprising a 915 or 406 base pair sequences (SEQ ID NO: 8 or 10) fully defined in the specification within the genome of the L.esculentum plant, where the detection of the presence of SEQ ID NO: 8 or 10 confirms the presence of Mi-1 allele or Ty-1 allele respectively, and (4) method of producing L.esculentum plant that contains at least one Ty-1 or Mi-1 allele in its genome, where the plant containing the Ty-1 and Mi-1 alleles is resistant to both tomato yellow leaf curl virus and root-knot nematodes, involves introgressing into the genome of the L.esculentum plant at least one Ty-1 allele that encodes for resistance to tomato yellow leaf curl virus and at least one Mi-1 allele that encodes for resistance to root-knot nematodes and using marker-assisted selection for identifying SEQ ID NO: 8 and 10 within the genome of the L.esculentum plant.