The Control of Flowering, Growth, and Dormancy in Kleinia articulata by Photoperiod

Kleinia articulata subjected to different photoperiods becomesdormant in long days (continuous light) and grows uninterruptedlyin short days (8 h). Dormancy results from the rapid cessationof leaf differentiation and expansion. By contrast stem growthis faster in long days and continues until all leaves have died.In long days growth is not halted permanently but flushes ofleaf production and stem elongation occur. Resumption of growthis stimulated rapidly by total darkness or short-day treatmentof the extreme stem tips for some days. This species is a strictshort-day plant in its flowering behaviour, depending on thisdaylength for normal inflorescence development also.