Improvement of the Rooting Efficiency and Vegetative Growth in Date Palm Offshoots by Licorice Root Extract and Auxins Mixture Applications. | ||||
| Journal of Plant Production | ||||
| Article 10, Volume 8, Issue 7, July 2017, Page 789-796 PDF (335.62 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2017.40575 | ||||
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| Authors | ||||
| E. F. A. El-Dengawy1; A. L. E. Wanas2; Mervat H. M. Farrag1 | ||||
| 1Department of pomology, Faculty of Agriculture, Damietta University, Egypt. | ||||
| 2Department of plant Science, Faculty of Agriculture, Damietta University, Egypt. | ||||
| Abstract | ||||
| Date palm offshoots culture is still the most common way for date palm propagation. So it's very necessary to getting methods for increasing offshoot survival rate. There are several factors that affecting offshoot rooting such as, duration of separating to planting time, offshoot weight, age, pests and diseases. This study was carried out on the date palm offshoots cultivar "Hayany" during the two successive seasons 2014/2015 and 2015/2016 in a private nursery of Om El-Reda area in Damietta governorate, Egypt. The aim of the current research was to increase the efficiency of the rooting process and to improve the percentage of success in the separated offshoots after planting. The effects of spraying root ball and leaves of offshoots with 500ml of auxins mixture (500ppm IBA + 500ppm NAA) and 2.5g/l licorice root extract alone or in combination and distilled water (control) on improving offshoots rooting were studied. The results showed that all treatments significantly improved rooting percentage, growth characteristics of roots and vegetative growth characteristics of the tested offshoots compared to the control. Anatomical studies indicated that there were obviously differences in the measured characters of cross section of root. Where the roots of the treated offshoots significantly increased the number and area of sclerenchyma bundles, diameter and length of phloem and diameter of the vascular region and significantly decreased the thickness of the cortex, the diameter of the pith and the length of xylem compared to the roots of the control. The combination treatment of 2.5g/l licorice root extract and auxin mixture (NAA & IBA) gave the highest responses. | ||||
| Keywords | ||||
| Phoenix dactylifera; offshoots rooting; licorice root extract; auxins; anatomical studies | ||||
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