PROPAGATION AND SEEDLING PRODUCTION OF SOME EGYPTIAN FLORA

Abstract

The four experiments were carried out during the period from 2017 till 2019 in the ornamental farm, department of Horticulture, Faculty of Agriculture, Ain Shams University located at Shoubra El- kheima, kaliobia Governorate, Egypt. The first experiment was performed for seed germination of Doum palm (Hyphaene thebaica) plants for two seasons, the second was for cutting rooting of the (Salvadora persica L). plants for two seasons, the third was conducted to study the effect of nitrogen fertilizer sources, known as Toothbrush shrub or Araak, Siwak, Miswak on the (Salvadora persica L). plants, the fourth was carried out to study the effect of N:P:K combined fertilizer with a different levels of nitrogen fertilizer First Experiment: Seeds of Doum palm (Hyphaene thebaica) plants were collected from El Obour Market as a source of plant material during two seasons. using 1:1 sand: peat moss (v/v). Seeds of Doum palm were treated with different presoaking treatments as follows: control treatment without soaking (direct plantation); soaking in tap water for 48 hours; soaking gibberellic acid solution (GA3) at 200 ppm for 48 hours; Soaking potassium nitrate solution (KNO3) 3% for 48 hours; soaking sulfuric acid (H2SO4) 28-31% for 15 minutes; soaking in hot water (60°C ± 5) for 3 hours then left till gradually cooling and freezing storage in Deep freezer at -18°C for 12 hours then soaked in hot water at 60°C for 1 hour. Germination percentage, length of roots in cm (LR), diameter of roots in cm (RD), fresh weight of roots in cm (FWR), dry weight of roots in grams (RDW), plant height seedling L in cm (SL), wide of leaf in cm (LW), fresh weight of above ground parts in gram (AFW), dry weight of above ground part in grams (ADW) and leaf area in cm2 (LA) were determined of both seasons. The results showed that seed the highest germination percentage was obtained from seeds treated with Freezing