Scientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101Effect of Different Plastic Sheet Coverings and Pruning Time on Yield and Yield Components of Table Grape "cv. Superior"114647410.21608/hjsc.2015.6474ENAlyAFac. Agric., Saba Basha, Plant Production Department, Alex. Univ.ThanaaEzz.Fac. Agric., Saba Basha, Plant Production Department, Alex. Univ.RehabAwadFac. Agric., Saba Basha, Plant Production Department, Alex. Univ.A.Abou-ElmaatyFac. Agric., Saba Basha, Plant Production Department, Alex. Univ.Journal Article20180422This study was carried out during two successive seasons in 2007 and 2008 on five years old "cv. Superior"<br />grape cultivar in a private vineyard at El-Noubarya city, Behaira Governorate, Egypt. The vines were grown in sandy<br />soil with spacing of 2m within rows and 3 m between rows under drip irrigation system and trained to cane pruning<br />under baron trellis system. The main factor was the three pruning times [(1st December (P1), 15th December (P15) and<br />30th December (P30)] carried during dormant season to ten canes per vine with 12 nodes per cane. Four renewal spurs<br />(2 nodes) were tretained per vine, while the sub main factor was four mulching treatments with sheet cover sleeves air<br />white plastic (WSCT), air yellow plastic (YSCT), soil white plastic (WSCS) and soil yellow plastic (YSCS). The<br />control was the rest of the field (no mulch with pruning 20th December).The (P30YSCS) and (P30WSCS) treatments<br />gave the highest yield (kg/vine) in the first and second seasons compared with control treatment. Also the treatments<br />(P1YSCS), (P1WSCS), (P1YSCT) and (P1WSCT) gave the lowest value of yield as compared with control. All<br />treatments significantly decreased number of berries/cluster in both seasons, except the treatments (P1YSCS),<br />(P1WSCS), (P15YSCS), (P15WSCS) and the control. The increasing of cluster length and decreasing of berries number<br />in the treatments (P1YSCT), (P1WSCT), (P15YSCT), (P15WSCT), (P30YSCT) and (P30WSCT) caused a significant<br />reduction in cluster compactness as compared with control treatment. Furthermore, increasing of cluster compactness<br />significantly under the treatments (P1YSCS), (P1WSCS), (P15YSCS), (P15WSCS), (P30YSCS), (P30WSCS) and the<br />control caused by decreasing cluster length and increasing berries number compared with all treatments. Accumulation<br />of high temperatures by (P1YSCT), (P1WSCT), (P15YSCT), (P15WSCT), (P30YSCT) and (P30WSCT) increased total<br />sugars in both seasons compared with control treatment, but the treatments (P1YSCS), (P1WSCS), (P15YSCS),<br />(P15WSCS), (P30YSCS) and (P30WSCS) did not affect total sugars compared with control treatment.https://hjsc.journals.ekb.eg/article_6474_5c1790716b3bd8a35697ac2698c27051.pdfScientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101Reduction of Nitrate Content in Response to Salicylic Acid in Spinach and Parsley Fertilized with Two Different N-Sources1523647610.21608/hjsc.2015.6476ENElwanM.Suez Canal University, Faculty of Agriculture, Department of Horticulture, Ismailia, Egypt.M.ElhamahmySuez Canal University, Faculty of Agriculture, Department of Agricultural Botany, Ismailia, Egypt.Journal Article20180422Spinach and parsley are hyper-nitrate accumulator vegetables, thereby constituting a possible human health<br />risk. For that, pot and two field experiments were conducted to investigate the effect of exogenous salicylic acid (SA)<br />application on yield, nitrate content and another quality parameters in spinach and parsley using two different<br />ammonium fertilizers as ammonium sulfate (A. sulfate) and urea. The results of pot experiment (factorial, 2 x 2)<br />showed that, A. sulfate-fertilized plants produced maximum yield compared to urea-fertilized ones, which companied<br />with high level of nitrate content (up to 942.6 and 604.5 mg Kg-1 FW in spinach and parsley, respectively). Application<br />of 5 μM of SA reduced nitrate content by about 18 and 10 % in A. sulfate-fertilized plants and by 50 and 7 % in ureafertilized plants, in both spinach and parsley, respectively. Under field conditions, using only urea fertilizer, nitrate was<br />decreased to minimum levels, 679.0 and 395.6 mg kg-1 FW, in spinach and parsley, sprayed with 20 and 5 μM-SA,<br />respectively. This reduction was associated with induction of nitrate reductase (NRase) activity. The maximum<br />percentage of NRase activity over control (74%) was recorded in spinach treated with 20 μM of SA and reached to 60<br />% in parsley treated with 5 μM-SA. Also, spraying of SA increased marketable yield, vitamin C and total free amino<br />acids contents in both tested leafy vegetables. It was concluded that, SA application preserved nitrate content in safe<br />limit for human consumption.https://hjsc.journals.ekb.eg/article_6476_cae3f73b3a87b0cba0cff88bfed6f5b4.pdfScientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101In Vitro Screening of Several Potato Genotypes for Water Stress Using High Agar Levels in the Medium2534647710.21608/hjsc.2015.6477ENEl-MagawryA.Agric. Research Center, Giza, EgyptF.MohamedDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, EgyptK.Abdel-HamidDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, EgyptM.ElwanDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, EgyptM.Abdel-SalamAgric. Research Center, Giza, EgyptJournal Article20180422In vitro screening of several potato genotypes (27 cultivars and breeding lines) for agar-induced water stress<br />was conducted. Single node explants were evaluated on the basis of their plantlet growth and microtuberization under<br />different concentrations of agar (7-10 g/l). Increasing agar in the tissue culture medium resulted in reduction in plantlet<br />growth, rooting and tuberization potential in varying degrees, depending on the cultivar. Under agar-induced water<br />stress, Safran and Universa were generally among the ranked tolerant cvs; Nicola, Triomph and Agria as moderate;<br />Diamant and Bolista as sensitive to drought. Photosynthetic pigment contents under agar-induced water stress were<br />markedly decreased in most cvs tested. However, the cv. Universa showed larger decline in total chlorophyll than<br />Diamant or Bolista. Biochemical analysis of potato plantlet indicated increase in free amino acids, proline and catalase<br />(CAT) activities under water stress, while superoxide dismutase (SOD) was less than the control. Results also indicated<br />that the free amino acids and CAT activity were positively correlated with the tolerance mechanism to water stress.https://hjsc.journals.ekb.eg/article_6477_e4196d21d29e795ddafe233147f875b9.pdfScientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101In Vitro Screening of Different Potato Genotypes for Salinity Tolerance3546647910.21608/hjsc.2015.6479ENEl-MagawryA.Agric. Research Center, Giza, EgyptFMohamedDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, EgyptM.ElwanDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, EgyptK.Abdel-HamidDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, EgyptM.Abdel-SalamAgric. Research Center, Giza, EgyptJournal Article20180422In vitro screening of several potato genotypes (29 cultivars and lines) to salinity stress was conducted. Single<br />node explants were evaluated on the basis of their growth, microtuberization and biochemical analysis under different<br />concentrations of salt (NaCl) stress. In most cases, increasing NaCl in the tissue culture medium resulted in reduction in<br />plantlet growth, rooting and microtuberization potential in varying degrees, depending on the cultivar. Some genotypes<br />such as Oceania, 97f-267 and Picasso produced higher number of microtuber under 150 mM NaCl than control.<br />Generally, 97f-267, Oceania and Universa genotypes were ranked among salt tolerant, while Nicola, Safran, Diamant<br />were ranked as moderate and Elodi, Triomph, Marabel, Bolista and 99-981 were ranked as salt sensitive based on<br />morphological characters. Photosynthetic pigments decreased under salt stress, however, Universa and Safran<br />maintained higher chlorophyll content under salt conditions (100 mM NaCl) comparing with control (0.0 mM NaCl)<br />plantlets. Also, Universa and Safran accumulated more proline and free amino acids under stress treatment comparing<br />with control, than other tested genotypes. The activities of antioxidant enzymes were different among potato genotypes.<br />In this respect, Universa and Safran had higher catalase (CAT) activity under salt stress (100 mM NaCl) than control<br />treatment (0.0 mM NaCl), however, superoxide dismutase (SOD) activity was not good indicator for salinity tolerance<br />in the tested potato genotypes.https://hjsc.journals.ekb.eg/article_6479_e28556db168fdffb35084698a0353674.pdfScientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101Plant Growth, Fruit Yield and Mineral Content of Bottle Gourd (Lagenaria siceraria M) as Affected by Plant Density and Nitrogen Fertilizer4754648110.21608/hjsc.2015.6481ENSamirEl-SeifiDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt.MahmoudHassanDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt.MohammedElwanDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt.SalmaMeloukDepartment of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt.Journal Article20180422This experiment was carried out during two successive summer seasons of 2012 and 2013 on bottle gourd<br />landrace El-Arishy (Lagenaria siceraria M) at the Experimental Research Farm of the Faculty of Agriculture, Suez<br />Canal University, Ismailia, Egypt to study the effect of plant density and nitrogen fertilizer on plant growth, yield and<br />its components as well as mineral content. The obtained results showed that the low plant population (1750 plant per<br />fad.) gave the highest shoot fresh weight, shoot dry weight, average fruit weight, average fruit length and nitrogen<br />content in shoots and fruits. However, the significant highest fruit yield and fruit number per faddan were associated<br />with the high plant population (3500 plant per faddan). All previous mentioned parameters in addition to shoot and fruit<br />phosphorus contents significantly improved by application of high nitrogen rate (20g/plant). Shoot and fruit potassium<br />and phosphorus contents were not affected significantly by plant spacing. Fruit potassium content did not affect<br />significantly by nitrogen fertilizer. All the above mentioned parameters were significantly higher with the interaction<br />between low plant population (1750 plant per fad.) was combined with high nitrogen rate (20g/plant), except fruit yield<br />(ton/fad.) and fruit number which increased by the combination of high plant population with high nitrogen rate.<br />Potassium content did not affect by the interaction between plant spacing and nitrogen fertilizer.https://hjsc.journals.ekb.eg/article_6481_6b35967cad7023d728895ab78dec7f20.pdfScientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101Effect of Seed Husk, GA3, KNO3 and Seed Orientation in Seedbed on Germination Characters of White Succary Mango Seeds5560648310.21608/hjsc.2015.6483ENAbbasTHorticulture Department, Faculty of Agriculture, Suez Canal University, Egypt.M.SeifHorticulture Department, Faculty of Agriculture, Suez Canal University, Egypt.A.GomaaHorticulture Department, Faculty of Agriculture, Suez Canal University, EgyptE.NadaHorticulture Department, Faculty of Agriculture, Suez Canal University, EgyptJournal Article20180422This experiment was conducted in two successive seasons (2012/13 & 2013/14). Under the condition of<br />plastic house covered with seran. The objective was to study the effect of seed husk, GA3, KNO3 and seed orientation in<br />seedbed on germination percentage and subsequent seedling growth of White Succary rootstock. From this study, the<br />highest germination percentage and germination velocity of mango seeds and standard seedling growth could be<br />achieved through husking seeds or sowing seed in position of vertical with the convex edge upwards after soaking in tap<br />water (48h) or through soaking seeds in GA3 at 1000 ppm for 48h.Moreover, there was a remarkable effect of husking,<br />GA3 and KNO3 in increasing growth of the obtained seedlings in terms of stem length and leaf number as well as the<br />fresh and dry weights of roots.https://hjsc.journals.ekb.eg/article_6483_45bcc7245d133b49db97751c0520ddc0.pdfScientific Society of Agricultural SciencesHortscience Journal of Suez Canal University2314-79463120150101An Improved Protocol for Micropropagation of Jojoba (Simmondsia chinensis (Link) Schneider)6167648510.21608/hjsc.2015.6485ENEbrahemA.Plant Production Department, Faculty of Environmental Agricultural Sciences, El-Arish, Suez Canal University, EgyptI.IbrahimGenetic Engineering and biotechnology Research Institute, Sadat City-Menofia UniversityM.El-MekawyPlant Production Department, Faculty of Environmental Agricultural Sciences, El-Arish, Suez Canal University, EgyptS.AbdallahPlant Production Department, Faculty of Environmental Agricultural Sciences, El-Arish, Suez Canal University, EgyptJournal Article20180422In vitro consecutive micropropagation stages of Simmondsia chinensis was studied and a micropropagation<br />protocol was developed by Four media were tested Murashige and Skoog (MS), Schenk and Hildebrandt (SH), Driver<br />and Kuniyuk (DKW) and Lloyd and McCown (Woody plant medium, WPM) with shoot-tip and one node cutting for<br />the establishment stage. Murashige and Skoog (MS) was found to be the best medium and one node cutting as starting<br />material for establishment from mother plants. Multiple shoots were obtained on MS medium supplemented with1.00<br />mgl-1 6-benzyladenine (BA) in the combination with1.00 mgl-1 Indole-3-acetic acid (IAA). High frequency of rooting<br />was obtained on full MS solid medium supplemented with 7.00 mgl-1Indole-3-butyric acid (IBA) alone. Regenerated<br />plantlets were successfully transferred to pots containing mixture of peat moss, vermiculite and sand at equal volume<br />with 90% survival.https://hjsc.journals.ekb.eg/article_6485_e4fc974c7573d3e586b7efb553d577f8.pdf