Effect of different storage temperatures in flowering of Polianthes tuberosa L.

I. Niebla-López, J. Rodríguez-Campos, J. Cervantes-Martínez, R. Barba-Gonzalez, M.C. Castañeda-Saucedo, E. Tapia-Campos
Currently, the production of Polianthes tuberosa as a cut flower has a great importance worldwide and is carried out both in greenhouse and at open field. An important issue, in different areas where tuberose is cultivated, is the control of flowering; for which the use has been evaluated mainly of growth regulators and to a lesser extent the forcing with temperatures. In this work, the effects of different temperatures (4, 12 and 27°C) and weeks of storage (4, 5, 6 and 7) on the variables: days to flowering (DTF), length of flower stem (LFS), thickness of the flower stem (TS), length of the spike (LS) and number of flowers (NF) were evaluated in bulbs of P. tuberosa ‘Double’. The bulbs were established in a greenhouse, the experimental unit consisted on a plastic box with 20 bulbs, with five repetitions. An analysis of variance and comparison of means was performed (Duncan, p<0.05). Statistical differences between the treatments for the DTF variable were observed, where the early flowering was reported in the treatment of 7 weeks of storage at 27°C, meanwhile, the latest flowering happened with the bulbs stored at 12°C for 6 weeks. On the other hand, 4°C treatments were not statistically different to the control (room temperature). In general, storage treatments at 27°C showed an earlier flowering in relation to the rest of the treatments. The treatments at 12°C were the ones that delayed more the flowering and in intermediate values are the treatments of 4°C and the control. The rest of the variables were not affected by the storage treatments, which is important from the point of view of moving the production without affecting the quality of the flowers.
Niebla-López, I., Rodríguez-Campos, J., Cervantes-Martínez, J., Barba-Gonzalez, R., Castañeda-Saucedo, M.C. and Tapia-Campos, E. (2020). Effect of different storage temperatures in flowering of Polianthes tuberosa L.. Acta Hortic. 1288, 189-192
DOI: 10.17660/ActaHortic.2020.1288.28
cut flower, temperature, forcing, ornamental geophytes

Acta Horticulturae