Journal of Plant Production Sciences

Journal Information
EISSN : 2314-7989
Current Publisher: Zagazig University Medical Journal (10.21608)
Total articles ≅ 22
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A. M. A. A. M. Khozimy El-Ghandor
Journal of Plant Production Sciences, Volume 9, pp 1-16; doi:10.21608/jpps.2020.119468

Abstract:
Two field experiments were conducted through 2018 and 2019 summer growing seasons at Sakha Agricultural Research Station, Kafrelsheikh, Egypt to study effect of irrigation intervals and weed control for maximizing yield and productivity of irrigation water on Sakha 107 and Giza 179 rice cultivars. A strip split-plot experimental design, with three replications was used in both seasons. Three irrigation intervals i.e; irrigation every three days, every six days and every nine days were assigned in horizontal plots. Two rice cultivars viz; Sakha 107 and Giza 179 were randomly distributed in vertical plots. Six weed control treatments i.e., Saturn 50% EC (thiobencarb), Ronstar 25% EC (oxadiazon), Saturn followed by (fb) Granite 24% SC (penoxsulam), Ronstar fb Granite, hand weeding and weedy check were allocated in the sub-plots. The resultsof both seasons showed that, irrigation every 3-days recorded the lowest dry weights of E crus-galli and total weeds while, irrigation every 9-days recorded the lowest dry weights of A. baccifera and C. difformis. The highest rice dry weight, number of panicle m-2, number of filled grain panicle-1, panicle weight and rice grain yield were recorded by irrigation every 3-days as compared to 6 and 9 days. Rice cultivar Giza 179 exceeded Sakha 107, it recorded the lowest dry weights of A. baccifera, E crus-galli and total weeds in addition, increased number of panicle m-2, number of filled grain panicle-1 and rice grain yield while, the highest panicle weight was recorded by Sakha 107. Application of Ronstar fb Granite at recommended dosesachieved the best weed management, the highest weed control efficiency (%), rice grain yield and its attributes as well as productivity of irrigation water (PIW) compared to other treatments. The amount of irrigation water applied was decreased by 15% and 31% for six and nine days compared to three days, while productivity of irrigation water was taken the descending order six > three > nine days. To achieve the best weed control efficiency (%), yield and its attributes as well as save irrigation water and promote PIW, it could be apply irrigation every 6-days with Giza 179 cv treated by Ronstar fb Granite at recommended doses. But in case of water shortage, it could be apply irrigation every 9-days with Sakha 107 cv treated by Ronstar fb Granite at recommended doses.
Walid Elkazzaz Maii ElSharayidi
Journal of Plant Production Sciences, Volume 9, pp 17-22; doi:10.21608/jpps.2020.119471

Abstract:
Extreme environments like thermal springs are of considerable value as a source of thermophilic microbes, enzymes and biotechnological substances. The hot spring of Ras-Sedr is one of the Egyptian hot springs which not discovered yet. This research was carried out to isolate and screen thermophilic microbes that have the capability to produce thermostable enzymes. The sources for microbial isolation were sediment and water samples, collected from Ras-Sedr's hot spring, Ras-Sedr, Egypt. Three different medium types were used for microbial isolation. The isolates obtained were subjected for enzymatical activity. Three different enzymes, cellulase, lipase and ά-amylase, were selected to be screened by isolated strains. For cellulase activity testing, carboxy methylcellulose (CMC) agar was used as growth medium whereas tributyrin agar medium was used for lipase enzyme, while, starch agar plates were used for amylase enzyme screening. Our results showed that sediment sample harbored higher count of microbes than the water sample. Similarly, ATCC medium recorded higher thermophilic microbial count compared to the other two media used. The isolates obtained also reported a positive activity for all enzymes tested. Therefore, these promising isolates could be a source for pharmaceuticals and industrial applications.
O. M. S. M. Gerish Elsadany
Journal of Plant Production Sciences, Volume 8, pp 19-29; doi:10.21608/jpps.2019.67840

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Kh. A. D W. Ma. K. Teileb Mourad
Journal of Plant Production Sciences, Volume 8, pp 11-18; doi:10.21608/jpps.2019.59605

M. M. Kamara Kh. A. M. Ibrahim
Journal of Plant Production Sciences, Volume 8, pp 1-10; doi:10.21608/jpps.2019.59602

Salah Gowayed
Journal of Plant Production Sciences, Volume 6, pp 1-11; doi:10.21608/jpps.2017.7389

Abstract:
T􀀠is work aimed to investi􀀟ate t􀀠e impact of Zinc oxide nanoparticles (ZnO-NPs) on t􀀠e stress induced byCadmium (Cd) on 􀀟rain 􀀟ermination and antioxidant system of Maize (Zea mays L.) seedlin􀀟. Germination parameters(final 􀀟ermination percenta􀀟e (FGP), mean daily 􀀟ermination (MDG), coefficient of velocity of 􀀟ermination (CVG),mean 􀀟ermination time MGT, 􀀟ermination index (GI), 􀀟ermination stress tolerance index (GSI), seedlin􀀟 vi􀀟or index(SVI) as well as dry matter stress tolerance index (DMSI)), 􀀟rowt􀀠 parameters (s􀀠oot and root fres􀀠 and dry wei􀀟􀀠t),free radicals malondialde􀀠yde (MDA) and reduced 􀀟lutat􀀠ione (GSH) concentrations, superoxide dismutase (SOD, EC􀀛.􀀛5.􀀛.􀀛), 􀀟lutat􀀠ione reductases (GR, EC 􀀛.6.4.2), 􀀟lutat􀀠ione peroxidase (GPX, EC 􀀛.􀀛􀀛.􀀛.9) and catalase (CAT, EC􀀛.􀀛􀀛.􀀛.6) activities were investi􀀟ated. T􀀠e results indicated t􀀠at, addition of ZnO-NPs (5􀀚􀀚 m􀀟 L-􀀛) contribute a 􀀠i􀀟􀀠lyprotection from Cd toxicity via decrease Cd concentration, MGT, MDA and promotin􀀟 induction of MDG, CVG, GSI,SVI and DMSI, as well increasin􀀟 GSH, SOD, GR, CAT and GPX activities.
El-Tahan M, M. El-Hamahmy, A. Elewa, A. Baz
Journal of Plant Production Sciences, Volume 5, pp 12-22; doi:10.21608/jpps.2016.7391

Abstract:
The biochemical and anatomical analysis of furrow and drip-irrigated pods at harvest and after postharvestwere investigated. Results showed that, furrow-irrigated pods were significantly higher in the concentration of vitaminC, free phenolics, protein and proline as well as superoxide dismutase activity than drip-irrigated ones. On the otherhand, concentration of free amino acids and activity of catalase were higher in drip-irrigated pods by about 4 and 1.7times than furrow-irrigated ones, respectively. Both types of pods were similar in chlorophylls, carotenoids, TA (%),TSS and reducing sugars concentrations. The two pod types were similar in the anatomical parameters studied exceptthat furrow-irrigated pods which showed an increase in the thickness of parenchymatous cells in the pericarp. Duringstorage, furrow-irrigated pods stored at 7±1°C and 85% RH for 25d showed lower % of decay, rot, soggy andshriveling, but showed more water loss than drip-irrigated ones at all storage periods. Drip-irrigated pods maintainedhigh concentration of chlorophylls and carotenoid than furrow-irrigated pods until 20 d of storage. Furrow-irrigatedpods preserve the vitamin C at high concentration at all storage periods. TA (%) and TSS were increased with storage inboth fruit types without any significant differences between them. Both pod types had the same trend in theconcentration of organic compounds and the activity of antioxidative enzymes. Furrow-irrigated pods maintained theirpericarp and symmetric of cells compared to drip-irrigated ones. It could conclude that furrow irrigation was better toproduce visual appearance, high nutritional snap beans with high quality. It can be stored without deleterious effect for25 d at 7±1°C and 85% RH than drip irrigation.
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