Potential Adoption of the F2 Generation of Some TYLCV-Resistant Tomato Hybrids in Commercial Production under Natural Field Infection

The economic feasibility of using the tomato yellow leaf curl virus (TYLCV) resistant F1 hybrids (Solanum lycopersicum L.) may be improved with possibility their F2 generation in commercial production. Hence, this study was performed to evaluate and generations 15 TYLCV resistant/tolerant during 2018 2019 fall season identify best populations for Both were evaluated separately resistance, yield, fruit quality traits. Broad sense heritability (H2b) values TYLCV-resistance high, being > 60% 186, Goldstone, Rabha, SV0922 SV8320 both seasons. ‘186’, ‘Dania’, ‘PS550’, ‘Rozalina’, ‘SV0922’, ‘SV8320’, ‘Tyrmes’ had highest total yield (TY)/plant, low disease (TYLCVD) mean scores, acceptable traits, average weight 80 g. Desirable inbreeding depression (ID) observed TYLCVD-mean score most hybrids; TY/plant ‘SV3773’ seasons, ‘448’, ‘Goldstone’, ‘Rabha’, ‘SV8320’ ‘SV0922’ second season. Most desirable significant ID Accordingly, it is concluded that used production under TYLCV-infection season, as these recorded high h2b trait TYLCV-resistance,