National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Foliar Application of Salicylic Acid and Calcium Chloride Enhances Growth and Productivity of Lettuce (Lactuca sativa)116366610.21608/ejoh.2017.892.1000ENSabryYoussefDepartment of Horticulture, Faculty of Agriculture, Ain Shams University, Egypt.0000-0001-5326-637XSalama Abd ElhameidAbd ElhadyDepartment of Horticulture, Faculty of Agriculture, Ain Shams University, Egypt.Nashwa Attia IbrahimAbu El-AzmDepartment of Horticulture, Faculty of Agriculture, Ain Shams University, Egypt.Mohamed ZakiEl-ShinawyDepartment of Horticulture, Faculty of Agriculture, Ain Shams University, Egypt.0000-0002-3654-3125Journal Article20170410alicylic acid (SA) and Ca2+ regulate the physiological and biochemical mechanisms in plants. A factorial experiment was designed to evaluate the effect of foliar application of calcium chloride (0, 10, 20, 30 or 40 mM) and salicylic acid (0, 0.5, 1, 1.5 or 2 mM) on the vegetative growth of romaine lettuce cv. Balady during 2013/2014 and 2014/2015 seasons at the Experimental Farm of Horticulture Department, Faculty of Agriculture, Ain Shams University, Qalubia Governorate, Egypt. Results clearly indicated positive effects of foliar applications of calcium chloride and salicylic acid either alone or in combination on lettuce growth, productivity and some physiological parameters. Foliar application of calcium chloride at 20 mM significantly increased vegetative growth parameters (plant length, head diameter, fresh and dry weights of head, number of leaves/head, average leaf area and leaf area index), chlorophyll (a, b, and total), leaf relative water content, leaf membrane stability index, and macro- and micro-nutrients. Moreover, salicylic acid spraying at 1.5 mM significantly gave the highest significant values of all aforementioned parameters. Exogenous applications of calcium chloride and salicylic acid either alone or in combination reduced nitrate accumulation in the leaves. Spraying of calcium chloride at 20 mM with salicylic acid at 1.5 mM was the most effective treatment which can be used as an applicable practice in romaine lettuce cv. Balady cultivation.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Pre-harvest Potassium Silicate, Chitosan and calcium chloride Application Improves Mango Fruits (Zebda Cv.) Quality and Storability.1732366710.21608/ejoh.2017.949.1001ENMahmoud Ali AhmedMohamedHorticulture Research Institute, Ministry of Agriculture, Egypt.Ahmed FathyAbd El-khalekHort. Dept., Fac. of Agric., Tanta Univ., 31527. Egypt.HassanElmehratOrganic Agric. Central Lab., Agric. Res. Center, Giza, EgyptJournal Article20170417The effect of preharvest coating with Potassium Silicate, Chitosan and calcium chloride on mango "Zebda Cv." fruits storability was study during two successive seasons, 2014 and 2015. Mango fruits were coated with Chitosan at 1%, Potassium Silicate at 2000 and 3000 ppm, Calcium Chloride at 2 and 4 % or the combination among the first treatment and four other treatments in addition distilled water as comparison treatment two weeks before anticipated commercial harvest. At maturity stage, fruits were harvested and directly transported to the laboratory were washed and dried then packaged in carton boxes and stored at 13ºC ±1°C and 85-90 % relative humidity for 5 weeks. Fruit samples were taken at harvest and at one week intervals during cold storage to evaluate fruit quality characteristics and storability. This experiment revealed that, preharvest coating of "Zebda" mango fruits with all studded coating compounds significantly reduced all physiological postharvest process and delayed fruit aging and deterioration. Moreover, this study confirmed that, the combination treatments effectively increased fruit storability and shelf life in comparison with the control and single treatments. <br /> This study illustrated that, fruits preharvest coating with the combination of chitosan 1 %, potassium silicate at 2000 or 3000 ppm and calcium chloride at 2 or 4 % as coating treatments at two weeks before harvesting are a promising strategy for keeping mango "Zebda Cv." fruits quality and increasing its storability and shelf life up to four weeks at 13ºC ±1°C and 85-90 % RH.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Effect of GA3 and NAA on growth, yield and fruit quality of Washington navel orange3343366810.21608/ejoh.2017.950.1003ENAshraf EzzatHamdyDepartment of Horticulture, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt.Journal Article20170417Fruit drop and fruit quality are the most values in Washington navel orange since they are playing the main role in production and exporting potential. The present study was carried out during the two successive seasons of 2014 and 2015 on thirteen years Washington navel orange trees grown in sandy soil in a private orchard located at Housh Eisa, El- Behera Governorate, Egypt. The effect of GA3 and NAA applied one week after fruit set on Washington navel orange trees was studied. The results showed that foliar spraying of trees with GA3 at 20 ppm+ NAA at 25 ppm at one week after fruit set increased significantly vegetative growth parameters such as (shoot length (cm), leaves number per shoot at the three growth cycles, as well as leaf area (cm2) compared the other treatments and control. Spraying trees with GA3 at 20 ppm+ NAA at 25ppm decreased fruit drop percentage and increased significantly yield (kg/ tree), fruit physical parameters such as fruit weight (g), fruit size (cm3) fruit length, fruit diameter (cm) and fruit juice in comparison to other treatments and control. Fruit biochemical characteristics such as TSS, total acidity, TSS/acid ratio and V.C were also positively affected by using this treatment compared with other treatments and control. It could be recommended that spraying “Washington” navel orange trees with 20 ppm GA3 and 25 ppm of NAA one week after fruit set gave the highest values of yield (kg) /tree, fruit physical and chemical properties.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Effect of Chitosan, Salicylic Acid and Fulvic Acid on Vegetative Growth, Yield and Fruit Quality of Thompson Seedless Grapevines4559367010.21608/ejoh.2017.1104.1007ENMosaad AwadEl-kenawyViticulture Dept., Hort. Res. Inst., Agric. Res. Center, Giza, EgyptJournal Article20170515THIS STUDY was achieved out during two successive seasons (2015 & 2016) The experiment was conducted on 16-year-old Thompson seedless grapevines. The vines were grown in a clay soil under surface irrigation system. Three material namely Chitosan, Salicylic acid and Fulvic acid applied at rate (500 ppm) were used as a spray application either single or in combination of them on the vine for three times, at growth start, one week after berry set and at veraison as an attempt to develop growth, berry quality and enhancement storage shelf life period of Thompson seedless grapevines. The Results appeared that single applications of Chitosan ,Salicylic acid and Fulvic acid or in combination of them were effective in improving shoot length, leaf surface area, total chlorophyll in the leaf and total protein in the canes in addition percentages of N, P and K in the leaves as well as enhancing yield per vine, cluster weight, berry weight, soluble solids content and total phenols while reducing total acidity, cluster weight loss% ,berry shatter % and berry decay% and total loss in cluster weight percentages during storage shelf life period. Also, enhanced berry adherence strength as compared with control in both seasons of study. Application of Chitosan + Salicylic acid + Fulvic acid was superior to using applications of Chitosan, Salicylic acid and Fulvic acid alone. In addition, the best results with regard to net profit of Thompson seedless grapevines were obtained when vines were sprayed with salicylic acid + fulvic acid.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Frequent Foliar Sprayings of Salicylic Acid with Elevated Concentrations Enhance Growth, Yield and Fruit Quality of Strawberry (Fragaria x ananassa Duch. cv. Festival) Plants6174366910.21608/ejoh.2017.1100.1008ENSabry Mousa SolimanYoussefHorticulture Department, Agriculture Faculty, Ain Shams University0000-0001-5326-637XNashwa Attia IbrahimAbu El-AzmDepartment of Horticulture, Faculty of Agriculture, Ain Shams University, Egypt.Salama Abd ElhameidAbd ElhadyDepartment of Horticulture, Faculty of Agriculture, Ain Shams University, Egypt.Journal Article20170515Salicylic acid regulates several physiological and biochemical processes in plants. The previous studies on strawberry used salicylic acid with low concentrations varied from 0.5 mM to 2.0 mM which was sprayed once, twice or thrice. The highest concentrations of salicylic acid with the maximum times of applications gave the highest values of growth and yield parameters. To study the effect of frequent foliar sprayings of salicylic acid with elevated concentrations (0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, or 7.0 mM) applied every 10days during all the growth stages of strawberry cv. Festival plants, a field experiment was conducted during 2013/2014 and 2014/2015 seasons at the Experimental Farm of Horticulture Department, Faculty of Agriculture, Ain Shams University, Qalubia Governorate, Egypt. Compared with the water-sprayed plants, salicylic acid spraying up to 5.0 mM had positive and significant effects on the vegetative growth parameters, leaf SPAD readings, leaf relative water content, leaf membrane stability index, leaf content of macronutrients, number of fruits/plant, early and total yields/plant, and fruit soluble solids content. Salicylic acid at 4.0 mM gave the highest significant values of the aforementioned parameters. Moreover, increasing salicylic acid concentrations significantly reduced nitrate content in the fruits. In addition, a comparative microscopic examination showed that salicylic acid at 4.0 mM increased the cell thickness of both upper and lower epidermis, and the thicknesses of palisade and spongy tissues. Salicylic acid spraying at 4.0 could offer an economic, rapid, applicable, and effective way for enhancing growth, yield and fruit quality of strawberry cv. Festival.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Impact of Irrigation Water Deficit and Foliar Application with Salicylic Acid on the Productivity of Two Cowpea Cultivars7590367110.21608/ejoh.2017.1170.1010ENDalia MahmoudNassefDepartment of vegetable crops faculty of Agriculture Assiut university Assiut EgyptJournal Article20170528THREE EXPERIMENTS were conducted at the Vegetable Experimental Farm ,Faculty of Agriculture ,Assiut University during two summer seasons 2015 and 2016 to study the effect of irrigation regime and salicylic acid foliar application on two cowpea cultivars .Each experiment subjected to one of three tested irrigation levels 50 ,70) and % 30 of the available water which equal soil moisture tension of 0.60 ,0.35 and 0.85 bar ,respectively .(Each experiment was laid out using strip plot arrangement in a randomized complete block design )RCBD (with three replications .Three salicylic levels 300 ,150 ,0) ppm (were randomized in horizontal plots while the two cowpea cultivars) Azmirly and Cream (7 were allocated in vertical plots .The results showed that the irrigation water deficit significantly decreased all the studied traits .Concerning salicylic acid) SA (application ,obtained data revealed that increasing the SA concentrations from) 0 control (to 300 ppm ,increased the plant ability to withstand drought .Also ,Azmirly cultivar was better than Cream 7 for all studied traits .The highest mean values of seed yield per hectar were obtained from Azmirly cultivar which was irrigated at70 %of the available water and sprayed with 300 ppm salicylic acid as foliar application .Protein patterns were analyzed in leaves of Azmirly and Cream 7 cultivars to study the changes in gene expression after one and two weeks of treatments with 150 ,0 and 300 ppm of salicylic acid) SA .(SA induced the expression of 11 new proteins as compared to the control treatment.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Studies on Microtuberization of Five Potato Genotypes9197367210.21608/ejoh.2017.1176.1011ENMohammad MustafaKhalilPotato and Vegetatively Propagated Vegetables Department, Horticulture Research Institute, A.R.C.,
Giza, Egypt0000-0002-8556-0394Ahmed Mohamed HamedAbd El AalPotato and Vegetatively Propagated Vegetables Department, Horticulture Research Institute, A.R.C.,
Giza, EgyptMahmoud MohamedSamyPotato and Vegetatively Propagated Vegetables Department, Horticulture Research Institute, A.R.C.,
Giza, EgyptJournal Article20170529MATERIALS of in vitro culture are the first step in most seed potato programs worldwide. Microtubers areconsiderable tool for implementationof anational seed potato production system in countries lacking isolated high cool latitude and vector free areasfor seed potato production.The current study investigatesmicrotuber production abilityof 5 genotypes imported from CIP (International Potato Center, Peru) comparing with Diamant variety. Also, studied the impact microtuberization agent(80 g/l sucrose, 5 mg/l benzyladenineor 500 mg/l Chlorocholine chloride) addedto MS medium on in vitromicrotuberization.Significant differences recorded between genotypes in microtuber weight and number. Unica and Costanera yielded the highest microtubers weight, number and average microtuber weight.The best media for microtuberization was MS supplied with 80 g sucrose. As a conclusion it is recommended to use elevated sucrose for microtubers production of Unica, Costanera, Yayla Kizi and Meva genotypes.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601Effect of Streptomycin and GA3 Application on Seedlessness, Yield and Fruit Quality of 'Balady' Mandarin99104367310.21608/ejoh.2017.1178.1012ENAli RamadanEl-ShereifHort. Dept., Faculty of Agriculture, Kafrelsheikh University, EgyptAli El-SayedZaghloulHorticulture Research Institute, Handling Research Department, EgyptDoaa MahmoudAbu ElyazidHorticulture Department, Faculty of Agriculture, Kafrelsheikh University, EgyptJournal Article20170529The effectiveness of repeated applications of GA3 and streptomycin (SM) to stimulate seedless fruit development or reducing seed number per fruit of mandarin (Citrus recticulata Blanco cv Balady) were evaluated under field conditions at Motobus district, Kafr El-Sheikh governorate during 2014 and 2015 seasons. Trees were sprayed with GA3 at 25 ppm, SM at 250 ppm, SM at 500 ppm, SM at 250 ppm + GA3 at 25 ppm and SM at 500 ppm + GA3 at 25 ppm, while the control trees were sprayed with tap water. Results indicated that GA3 at 25 ppm recorded the highest fruit weight and acidity in both seasons. SM 500 + GA3 reduced seed number per fruit with about 76.66 and 77.46 % reduction in both seasons, respectively compared to the control. Meanwhile, high yield and fruit characteristics; firmness, vitamin C, brix and SSC/Acid ratio, were maintained under this treatment. The addition of GA3 to SM increased its efficacy in this respect.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601The Influence of Foliar Application of Biostimulant Atonik and Different Sources of Potassium on Full Sun and Partial Shade Salvia farinacea Plants105117367510.21608/ejoh.2017.1205.1014ENAmaalHeikalOrnamental Horticulture Department, Fac. of Agric., Cairo Univ., Giza, EgyptJournal Article20170607NUTRITION and some environmental variables play a major role in the growth and development of ornamental plants. Two pot experiments were carried out in a randomized complete block design to study the effect of foliar application of biostimulator agent (Atonik, 0.2%) and different sources of potassium viz. potassium sulphate (2g/L), potassium citrate (2g/L) and potassium humate (3g/L) on growth parameters and chemical constituents of Salvia farinacea plants grown under full sun and/or partial shade conditions (50 % shade) during 2014/15 and 2015/16 seasons. Foliar application of atonic and different sources of potassium enhanced growth, chlorophyll, total carbohydrates and mineral contents of plants grown in both environments. Under full sun, spraying plants with K humate gave the highest number of leaves and inflorescences as well as the highest biomass of fresh and dry leaves, while under partial shade, spraying plants with K citrate + atonik gave the highest values of these traits. Foliar application of K citrate + atonik gave the highest values of fresh and dry weight of inflorescences in both environments. Plants grown under partial shade conditions were superior in plant height and individual leaf area, while those grown under open field conditions were superior in stem diameter, number of leaves, branches, roots and inflorescences per plant, fresh and dry weight of leaves, stems, roots and inflorescences per plant as well as chlorophyll, total carbohydrates and mineral contents.National Information and Documentation Center (NIDOC), Academy of Scientific Research and Technology (ASRT)Egyptian Journal of Horticulture1110-020644120170601EFFECT OF DIFFERENT TREATMENTS OF CALCIUM AND BORON ON PRODUCTIVITY AND FRUIT QUALITY OF NAVEL ORANGE FRUITS119126367410.21608/ejoh.2017.1200.1013ENAli RezkFarhathorticulture research instituteJournal Article20170604Productivity, fruit setting, fruit drop, yield and fruit quality of Washington navel orange (Citrus sinensis L. Osbeck) trees in response to spraying both calcium chloride (CaCl2) at 0.5, 1.0, 1.5 and 2.0% and boric acid (H3BO3) at 0.050, 0.075, 0.1 % and 0.2% were evaluated during two successive seasons, 2014 and 2015 at El-Kanater El-Khayria research station, El-Qalyubeia Gov., Egypt. The experiment was designed as randomized complete block design with three replications. Results showed that most of boron treatments and the high concentrations of calcium applications were effective in improving the final fruit set %, yield (kg), fruit quality as well as average fruit weight, average fruit volume, TSS (%) and vitamin C as compared to the control. They also, led to significant decrease in June-drop (%) and juice acidity (%). However, the best results with regard to fruit setting, yield and fruit quality were significantly obtained due to spraying trees with 0.2% boric acid followed by 2.0% Calcium chloride treatments. So, we may recommend to apply both of these treatments to maximize the productivity and the upmost profits.