5. Conclusions
The lateral root tips (0.5 g fresh mass, FM) from five random plantlets of each treatment were placed in 5 ml of 0.1%2,3,5-triphenyltetrazolium chloride and 5 ml of 0.067 M potassium phosphate buffer. After mixing thoroughly, the roots were placed for 2 h (T) in a 37◦C water bath.