{"title":"Effect of Cultivar and Gelling Agent on In Vitro Multiplication of Gerbera (Gerbera jamesonii Bolus) Shoots","authors":"Seifeldin Ali Mohamed, Mustafa Ercan Özzambak","doi":"10.53332/uofkjas.v24i1.1236","DOIUrl":"https://doi.org/10.53332/uofkjas.v24i1.1236","url":null,"abstract":"An experiment was conducted to study the effect of cultivar andconcentration of agar and gelrite on in vitro multiplication of gerbera(G.jamesonii) shoots. Sterile in vitro growing shoots of the gerbera cultivarsAmeretto, Red Bull, Ruby Red, Yellowish green and Crillo were placed inglass jars containing nutrient media with different concentrations of agar andgelrite. There was a significant interaction between the gelling agents’concentrations and the gerbera cultivars. There was a decrease in themultiplication and vitrification rates with the increase of the concentration ofthe different gelling agents in the nutrient medium.","PeriodicalId":474410,"journal":{"name":"Maǧallaẗ ǧāmi’aẗ al-H̲arṭūm li-l-’ulūm al-zirā’iyyaẗ","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abu-Bakr A. Abu -Goukh,, Al Fadil M. Baraka, Mustafa M.A. Elballa
{"title":"Effect of Pre-Cooling and Waxing on Quality and Shelf-Life of ‘Galia’ Cantaloupes (Cucumis melo var. Cantaloupensis)","authors":"Abu-Bakr A. Abu -Goukh,, Al Fadil M. Baraka, Mustafa M.A. Elballa","doi":"10.53332/uofkjas.v23i1.1832","DOIUrl":"https://doi.org/10.53332/uofkjas.v23i1.1832","url":null,"abstract":"The effect of pre-cooling and waxing of three ‘Galia’ cultivarswas evaluated with regard to fruit quality and shelf-life at 18 ± 1°C and85%- 90% relative humidity. Pre-cooling and/or waxing reduced moistureloss, delayed fruit ripening, maintained quality and extended shelf-life ofthe three cultivars. Pre-cooling and/or waxing delayed the onset of theclimacteric peak, rind color development, fruit softening and TSSaccumulation by one to four days. Weight loss was reduced by an averageof 6.5% in the pre-cooled, 15.8% in the waxed and 27.4% in the pre-cooled and waxed fruits","PeriodicalId":474410,"journal":{"name":"Maǧallaẗ ǧāmi’aẗ al-H̲arṭūm li-l-’ulūm al-zirā’iyyaẗ","volume":"62 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Phytotoxic Impact of Mesquite (Prosopis juliflora) Pericarps on Seed Germination and Seedling Growth of Lettuce (Lactuca sativa)","authors":"Mohamed Osman A, Warrag and Essam I, None Warrag","doi":"10.53332/uofkjas.v19i1.1908","DOIUrl":"https://doi.org/10.53332/uofkjas.v19i1.1908","url":null,"abstract":"Phytotoxic effects of mesquite (Prosopis juliflora) pericarps onseed germination and seedling growth of lettuce (Lactuca sativa) wereinvestigated. Aqueous extracts of 10, 20, 30, 40, 50 and 60 g of drymesquite pericarps in a litre of distilled water were used. Final seedgermination percentage and germination rate, evaluated with correctedgermination rate index, and days to 50% of the final seed germination,were significantly reduced. Likewise were the radicle and the hypocotyllengths, five days after germination. The magnitude of the reductionincreased with the increase of extract concentration. Mannitol solutionswith the same osmotic potential and pH as the aqueous extracts resulted insignificantly higher values of these traits than their correspondingextracts. This indicates that mesquite pericarp contains allelochemicalswhich could detrimentally affect seed germination and seedling growth oflettuce.","PeriodicalId":474410,"journal":{"name":"Maǧallaẗ ǧāmi’aẗ al-H̲arṭūm li-l-’ulūm al-zirā’iyyaẗ","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Omer A. Abdalla, Ahmed Elmahi M. Elmahi, Sirelkhatim K. Abbouda
{"title":"Performance of Disc and Chisel Ploughs and their Effects on Some Soil Physical Properties","authors":"Omer A. Abdalla, Ahmed Elmahi M. Elmahi, Sirelkhatim K. Abbouda","doi":"10.53332/uofkjas.v23i1.1819","DOIUrl":"https://doi.org/10.53332/uofkjas.v23i1.1819","url":null,"abstract":"A study was carried out at the University of KhartoumDemonstration Farm in (2007), to study the performance of two tillageimplements: (disc and chisel plough) and their effect on some soilphysical properties. The results showed that the higher values of boththeoretical and effective field capacities were recorded by chisel plough(1.23 ha/hr and 0.90 ha/hr) as compared to disc plough (0.63 ha/hr and0.50 ha/hr). The higher field efficiency was recorded by disc plough(79.37%) as compared to the chisel plough (73.4%). The fuel consumedwhen using the disc plough was (10.60 l/ha) less than that consumed bythe chisel (13.47 l/ha). Tractor wheel slippages ware found to be 10.92%.and 14.1%. The result also showed that both ploughs decreased the soilbulk density values from 1.54 g/cm3 to 1.51 and 1.49 g/cm3 by disc andchisel plough respectively. Particle density was not affected (P > 0.05) byboth implements . The soil porosity values were also increased for bothimplements. The soil moisture content recorded in two depths 0-15 and15-30 cm were higher for chisel plough (6.53% and 6.9%) as compared todisc plough which recorded 6.3% and 6.5% respectively. The infiltrationrate obtained by the disc plough was 22.2 cm/hr while that of chiselplough was (20.1 cm/hr).","PeriodicalId":474410,"journal":{"name":"Maǧallaẗ ǧāmi’aẗ al-H̲arṭūm li-l-’ulūm al-zirā’iyyaẗ","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}