
%0 Journal Article
%A Ison, RL 
%A Humphreys, LR 
%T Flowering of <I>Stylosanthes guianensis</I> in controlled temperatures under natural photoperiod
%J Australian Journal of Agricultural Research
%D 1984/04/01
%V 35
%N 2
%P 219-228
%K 
%R https://doi.org/10.1071/AR9840219
%U https://www.publish.csiro.au/paper/AR9840219 
%X Seedlings of Stylosanthes guianensis var. guianensis cv. Cook and cv. Endeavour were grown in naturally lit glasshouses at Brisbane (lat. 27¦ 30' S.) at 35/30, 30/25 and 25/20¦C (day/night), and were sown so as to emerge at 18-day intervals from 18 January to 11 June. Cook behaved as a long day-short day plant, with seedlings emerging after 5 February flowering incompletely or remaining vegetative until the experiment was terminated in mid-October. In the 25/20¦C regimen flowering was incomplete in Cook; in Endeavour flowering was delayed but a conventional short-day response was observed. At 35/30¦C Endeavour flowering was inhibited in the shortest days of mid-winter, suggesting a stenophotoperiodic response, but short days were confounded with low levels of irradiance. Minimum duration of the phase from emergence to floral initiation was c. 66-70 days in Cook and c. 40-45 days in Endeavour; the duration of the phase floral initiation to flower appearance was linearly and negatively related to temperature. 
