The Effect of Zinc Sulphate on the NAA and IBA Hormones on Rooting of Semi - Hardwood Cuttings of Aralia elegantissima.

In order to study the effect of the Various concentrations of the Zinc Sulphate, Indole butyric acid (IBA), Naphthaleneacetic acid (NAA) and the mixtures of these two hormones (NAA‐) on the rooting of the semi-hard wood cuttings of aralia elegantissima, was conducted in a greenhouse around Chalous. The required semi-hardwood cuttings were prepared from the mother plant (stalk), which were planted in the bed of the green house and lacked the shoot. This experiment was arranged in the form of complete randomized design with 3 replications and 13 treatmens In this research, hormone treatment included 4 Levels: 0 , 1000 , 2000 and 3000 ppm of Indole butyric acid and 4 Levels, 0,1000 , 2000 and 3000 ppm of the naphthalene acetic acid and the mixture of these two hormone treatment regulators with the concentration of 1000 ppm of IBA 1000 ppm of NAA, 1000 PPM IBA 2000 ppm NAA, and 1000 ppm of IBA 3000 ppm NAA, 0 , 1500, 3000 and 5000 ppm of the Zinc Sulphate. The bottom part of the cuttings was dipped into the above solutions. The traits, including the percent of the rooted cuttings, fresh weight, dry weight, number of the root and the length of the root were evaluated. The results showed that the highest rooting percent of the cuttings was obtained with 3000 ppm of the ZnSO4. The best root length was obtained in the cuttings with 2000 ppm of the IBA. The cuttings which were treated by the 3000 ppm of ZnSO4 had the highest number of the roots. Also, the dry weight of the root in the cuttings which were treated by 3000 ppm of the ZnSO4 showed the highest value. The highest of the fresh weight was obtained with 3000 ppm of ZnSO4 and with 1000 1000 ppm of NAA IBA.