Ecology of Indian desert : VI. Photoperiods in relation to growth behavior of Solanum surattense burn.

In the present study, the effect of different photoperiods: 3, 6, 9, 12 and 18 hr followed by a dark period in a 24 hr cycle, as well as total darkness, continuous light and diffuse light in relation to growth behaviour was observed in Solanum surattense. The influence on the pattern of root and shoot development, stomata, chlorophyll content, green weight, dry weight, fresh weight, monosaccharides, total nitrogen have been analysed. It appeared that a photoperiod of 12 hr brought about optimum growth in this species.