Exploring the Benefits of Greek Tomato Landraces for Development of High Yield and Quality Hybrids in Organic Farming Systems

Nowadays, there is a lack of high-performing genetic materials specifically developed to thrive under low-input conditions and meet the demands of organic agriculture. This study aims to evaluate seven improved Greek tomato landraces and their (F1) hybrids designed for low-input farming systems as a potential solution to the shortage of superior varieties for organic farming in specific environments. This evaluation focuses on yield components and fruit quality parameters. According to the results, experimental genetic material matches or exceeds the performance of the commercial (F1) hybrid Formula and outperforms the control variety cv. Macedonia (pure line), indicating that selected inbred lines (S.I.L.s) originated from landraces that developed under low-input conditions and are better suited to organic farming systems. For instance, the improved line (S.I.L.) from landrace Pantaroza pink has only a 13% lower total yield compared to (F1) commercial hybrid Formula, whereas the (F1) hybrid between Pantaroza pink × Kardia vodiou surpasses it, by 23%. In conclusion, tomato landraces are an important gene pool for seed development for organic or low-input farming systems, especially under the circumstances of climate change, presenting increasing challenges. Improving these local genetic materials using mild breeding approaches under low-input conditions leads to the production of new selected pure lines (S.I.L.s) along with their (F1) hybrids, which could ensure high-quality products with satisfactory yield and low requirements, offering an innovative pathway toward sustainable agriculture.