Effects of Different Concentrations of NAA on Cutting Rooting of Five Lagerstroemia indica Varieties
Five Lagerstroemia indica varieties, Honghuojian, Sihaishengping, Meihongqingtian, Hong-fenjincu and Kaixinguo , were used as materials to study the effects of different concentrations of NAA on cut-ting rooting, length and number of grade one roots .The results showed that the optimum concentration of NAA was 1 g/L;the rooting speed showed Meihongqingtian >Sihaishengping >Honghuojian>Hongfenjincu>Kaix-inguo .The softwood cutting accelerated the rooting , and their root quality was higher .