![]() ![]() Until now, potato crops derived from TPS-grown plant materials were not able to penetrate the existing potato value chains that are based on seed-tuber grown crops hybrid TPS is expected to accelerate the transition from a conventional seed tuber-based system to a TPS-based system (Lindhout et al. Transplanting is favoured over direct sowing as it shortens the duration of the field growing period compared with direct sowing in the field and advances growth at the start of the crop cycle (Wiersema 1984 Almekinders et al. ![]() Greenhouse-raised seedlings for field production in potato have been widely used since the introduction of TPS. All these systems can be used for further seed tuber multiplication or the production of ware tubers (Almekinders et al. ![]() These include direct field sowing, field transplanting of greenhouse-raised seedlings and planting of seedling tubers derived from either transplanted or directly sown plants. To derive seed and ware tubers from hybrid TPS, various cultivation systems can be used. ( 2011) has led to the introduction of hybrid true potato seeds (TPS) for potato production. The novel technology of diploid hybrid breeding reported by Lindhout et al. For some genotypes, crop cycle length was observed to be a more important yield-determining factor than transplanting date. The optimal transplanting window, taking into account weather-related risks, is approximately between early April and end May. At full crop senescence, no differences in marketable yield were observed. Transplanting in June resulted in lower marketable yield (> 28 mm) compared with earlier transplanting dates when crops were harvested in September. Seedling age did not significantly affect tuber parameters. In 20, plants could withstand shorter and less severe frost events. In 2018, the March planting experienced severe frost during the initial field period resulting in crop failure. In 2019, transplanting dates included April, May and June and seedling age was 5 weeks. In 20, 4- and 6-week-old seedlings were transplanted at four dates: March, April, May and June. Field trials with experimental hybrid genotypes were conducted in three consecutive years. This study explored the effects of transplanting date and seedling age on tuber yield, using greenhouse-raised seedlings. A promising cultivation pathway to produce seed or ware tubers is by transplanting greenhouse-raised seedlings into the field. The technology of hybrid breeding in diploid potatoes creates opportunities to design novel and improved cultivation systems based on hybrid true potato seeds. ![]()
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