AJP_Vol 03 N 01

Permanent URI for this collectionhttps://dspace.univ-eloued.dz/handle/123456789/21487

Browse

Now showing 1 - 8 of 8

Effect of water salinity stress on dates biometric and biochemical characteristics
(جامعة الوادي - University of Eloued, 2022-06-30) Krid, Keltoum
The problem of water irrigationin palm groves led us to conduct this study based on the comparison of the quality of dates Deglet Nour and Ghars from two farming systems in the region of El Oued according to thesaline water irrigation degree. Salt stress in El Ghout causes in both varieties a regression of biometric characteristics, pH, EC, water content and dry matter, while total sugars are high. The dates of the farm are more voluminous, less acidic, with high ash content, dry matter and high electrical conductivity. According to standards Algerian of date classification reveals that the characteristics of Deglet Nour dates of El Ghout are more damaged by increasing the water salinity. The two varieties of the farm have better characteristics than those of El'Ghout. It's also appears that saline water irrigation improves the sugar content of dates
Relationship between biochemical properties of some date varieties and nutritional requirements of Ectomyelois ceratoniae Zeller (1839)
(جامعة الوادي - University of Eloued, 2022-06-30) Keltoum, Krid; Nesrine, Djellabi
Ectomyelois ceratoniae Z is one of the most dangerous insects in the world and Algerian phoeniciculture. The survival of this insect is based on the search for the appropriate dates varieties to its nutritional needs. In this paper, an experimental study was performed to determine these nutritional needs. In this study, three susceptible varieties to the moth attack were chosen, the healthy and infested dates were separated to calculate on the one hand the attack rate and to carry out the qualitative analyzes. The results showed that the moth selects the appropriate dates to lay its eggs and feed the larvae based on the consistency of the dates and their high sucrose content. The content of the sucrose is reduced in attacked dates, resulting from their consumption after the enzymatic degradation by Invertase for the synthesis of simpler sugars (fructose and glucose) to be easily used by the larvae. The more the medium is very acidic (infested dates), the more the degradation of sucrose is important. The total sugar is also necessary to produce sufficient energy for the biological activities of the moth (growth).The use of these organic elements by the larvae leads to a reduction in the weight of the date and increases its fragility
Citrullus colocynthis: source of biodiesel
(جامعة الوادي - University of Eloued, 2022-06-30) Asmaa, Benaissa
Citrullus colocynthis (L.). Schrad, is a member of the botanical family of Cucurbitaceae and is commonly called coloquinte or "desert gourd", Handhal (Arabic) or Alkad (Tamahaq). This plant is known for its high oil content; it is a source of biodiesel and a real substitute for conventional diesel. Biodiesel is defined as a chemical alteration of vegetable oil to match the characteristics of the engine. The transesterification reaction is the most common method for converting coloquinte oil into esters and glycerol. The purpose of this communication is to draw attention to the biodiesel produced by coloquinte, which has been widely described in the literature.
HighPerformanceLiquid Chromatography of antioxidant activity of seeds some varieties of prickly pear (Opuntia ficus-indica L.) from the Sidi-Fredj Souk Ahras Algeria
(جامعة الوادي - University of Eloued, 2022-06-30) Abderrahmane, BOUAOUICH; Faiza, Bouguerche
The study was conducted on seeds of three varieties of Opuntia ficus-indica (O. ficus-indica), harvested from different regions of Souk Ahras in north-East of Algeria (Sidi-Fredj, Taoura and Drea). The analysis consisted of antioxidants extraction, following the solid-liquid extraction with ethanol 40% (v/v), their quantification and determination of their antioxidant activity by two methods (reducing power and DPPH (2-2 diphenyl 1-picryl hydrazyl) Test). Results show that total phenolic content (TPC) ranged from 71,01to 90,79mg GAE (Gallic Acid Equivalent)/100g Extract. The Sidi-Fredj variety has the best rate followed by the Taoura and Drea ones. Concerning, flavonoids and tannins, the Taoura variety contains higher concentrations corresponding to 2.67 mg QE (Quercetin equivalent)/100g and 6.60mg CE (Cyanidin equivalent)/100g. Activities of extracts of three varieties show similar performance; the EC50 for the reduction of ferric iron 0.05g/mL for all extracts, whereas the EA is more important in Sidi-Fredj and Drea seeds extracts. Regarding the scavenging of DPPH, Drea and Sidi-Fredj varieties show the highest capacity equals to 0.20g/mL. Linear correlations between the different studied activities and some antioxidants (flavonoids, tannins) rates were noticed, indicating their participation in the obtained effect. Analysis of the oil by HPLC revealed the presence of phenolic compounds including gallic acid and a form of vitamin E (α-tocophérol), capable of expressing biological activities; Antioxidants and vitamins. GC (Gas Chromatography) analysis showed that prickly pear oil was a major source of essential fatty acids (C18:2 and C18:3). The anti-free radical activity of the seed was evaluated through a DPPH chemical test. The results obtained show a hight reducing activity of our extract.
Plant-Based Agrobiodiversity In Home Gardens Of Tubah SubDivision, North-West Region, Cameroon
(جامعة الوادي - University of Eloued, 2022-06-30) Wujung, Lizby-Joy Mbi; Azibo Roland, Balgah; Ndam Walter, Tacham; Fungwa, Sandra Fru; Forchu, Melo Seidou; Njouonkou, André-Ledoux
Home gardens are subsistent agricultural production systems consisting of diverse crop plants which are easily accessible and adjacent to homesteads. They sustainably contribute to livelihoods in developing countries. Regarding the modernization in tropical Africa, there are changes in plant composition of urbanizing areas like Tubah Sub-Division, North West Region, Cameroon while the useful plant diversity in home gardens are poorly or not documented. This study aims to assess the diversity of useful plant species and identify key factors that influence diversity. 120 selected home gardens from Tubah Sub-Division were surveyed using two complementary field sampling approaches: interaction with selected households head through the use of structured questionnaires on garden plants and direct field observation. To assess plant abundance, the entire home garden was considered as a sample plot for tree, shrub, climber and epiphytic plant species while for herbaceous species, five quadrats of 1 m2 were used to count each species. A total of 133 useful plant species belonging to 108 genera and 47 families were recorded, with the number of species varying among the villages. The dominating families were Solanaceae, Fabaceae and Asteraceae. Age of household head and age of home garden were the key factors which significantly influenced the plant diversity. As home gardens in Tubah Sub-Division consist of diverse garden plants which are of great importance, we suggest that home gardening should be promoted, through education and extension services. This study should also be extended to other parts of the North West Region.
Maghreb Magpie Pica mauritanica Malherbe, 1845 winters in two oases at Aurès Mountains, Algeria (Aves: Corvidae)
(جامعة الوادي - University of Eloued, 2022-06-30) Habib, Bouletif; Abdelwahab, CHEDAD; Amor, Bendjedidi
New data on wintering and range expansion of Maghreb magpie Pica mauritanica Malherbe, 1845 in two oases. The first record is in the extreme south of the Aurès at Ghoufi (March 2019) and the second observation was at the North Biskra These data represent the first report of Maghreb magpie in this region, in two oases at Aurès Mountains (Biskra and Batna, Algeria).
Evaluation of yield contributing characters and cluster analysis of soybean genotypes
(جامعة الوادي - University of Eloued, 2022-06-30) Nazmul, Alam Khan; Mohammad, Saiful Islam; Saikat, Hossain Bhuiyan; Mehedi, Hasan; Mustafa Kamrul, Hasane
Soybean is a major oilseed crop in Bangladesh. Bangladesh is unable to fulfill the demand for soybeans. This experiment was carried out at Sher-E-Bangla Agricultural University to determine the genetic divergence among genotypes established by a Bangladeshi research center and to determine distinct genotypes with their performance for future use. Morphological divergence study among the twenty genotypes of soybean based on nine yield and yield contributing characters through the D2 statistic indicated the presence of substantial diversity by forming clusters with a wide range of inter-cluster distances. The soybean genotypes under investigation were divided into five clusters. Cluster I had the most genotypes, with 10, followed by clusters III and V, each with five and three genotypes. The relative divergence indicates how much each cluster varies from the others. Cluster I and Cluster III have the most significant order of divergence, followed by Cluster III and Cluster IV. The results revealed that the parents in these clusters are genetically heterogeneous. It's possible that a hybridization program obtained a significant heterotic response. Clusters I and II found the minimum inter-cluster distances, indicating limited genetic diversity. Cluster III had the maximum seed yield per plant cluster value. Individual performance was highest for the genotypes BINAsoybean-3, BINAsoybean-2, and Shohag for the trait seed yield per plant.
Découverte de niger (Guizotia abyssinica (L.f.) Cass. 1829 (Asteraceae) en Algérie et mise au point sur son utilisation
(جامعة الوادي - University of Eloued, 2022-06-30) Khellaf, Rebbas; Saliha, Benhissen; Djamel, Sarri; Abdelouahab, Belkassam; Rabah, Bounar
Guizotia abyssinica (L. f) Cass. (Asteraceae) est originaire d’Ethiopie. Cette astéracée a été découverte dans la région de Sétif et de M’Sila, dans le nord-est de l’Algérie. Des notes écologiques et d’utilisations alimentaires sont également fournies.

Browse

Browsing AJP_Vol 03 N 01 by Issue Date