CONTROL OF FLOWERING IN CALATHEA CROCATA IN MULTI-LAYER CELLS

B. PIETERS, R. LEMEUR, G. BOESMAN, P. DEBERGH
Flowering of Calathea crocata is induced naturally during short day period. Several experiments have shown that obscuring doesn't always have the same effect : if temperature is too high, flower inductions fails. In consequence, the production of flowering plants through the year requires an excellent control of the microclimate; this can be carried out in multiple layer cells.

In this experiment, the effect of several climate parameters on the flowering induction of Calathea crocata was investigated : the daylength was 8 or 10 h; the irradiance obtained by fluorescence 46 or 61 μmol.s-1 .m-2; the irradiance by incandescent lamps was 0 or 10 μmol. s-1 .m-2; the plants were from two different origins. The effect of the duration of the short day treatment was also investigated.

PIETERS, B., LEMEUR, R., BOESMAN, G. and DEBERGH, P. (1989). CONTROL OF FLOWERING IN CALATHEA CROCATA IN MULTI-LAYER CELLS. Acta Hortic. 246, 113-120
DOI: 10.17660/ActaHortic.1989.246.11
https://doi.org/10.17660/ActaHortic.1989.246.11

Acta Horticulturae