Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12870-016-0834-0/MediaObjects/12870_2016_834_Fig1_HTML.gif)
Effect of different concentrations of HRW on the induction of adventitious root development in cucumber explants. The primary root system was removed from hypocotyls of 5-day-old germinated cucumber. Explants were incubated with distilled water or different concentrations of HRWas indicated for 5 days. Adventitious root numbers (a) and length (b) were expressed as mean ± SE (n = 3) 10 explants was used in an independent experiment. Bars not sharing the same letters were significantly different by Duncan’s test (P < 0.05)