Faculty of natural and life science_PPI

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Browsing Faculty of natural and life science_PPI by Author "Hacene Laouedj"

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    Analysis of the variance water distribution of pivot sprinkler irrigation on the productivity of the potato plant in El Oued region of Algeria
    (Edirne. Turkiye, 2023-09-18) Messaoudi Mohammed; Hacene Laouedj; Ghemam Amara Djilani
    This study aimed to determine the extent different of distribution of the axial sprinkler water as a method of irrigation, and the effect of this on the quantity and quality of potato plant production in different areas along the axis sprinkler in the sandy soil of Eloued region in Algeria. For this, we relied on a sample of data consisting of 150 observations distributed over 10 areas according to the length of the axis. statistically we used oneway-analysis of variance after ensuring its statistical validity. Accordingly, we concluded that despite the significant statistical significance of the difference in the distribution of irrigation water( and the time taken and flow strength) along the axis, the difference in the amount of water supplied in the tenth area (tail region) reached a maximum of 57,58 % relative to the reference area ( the fourth region), which recorded at 42,42 % of what the reference area obtained, and at least 21,60 % was obtained in the eighth area relative to the reference region, which obtained 78,40 % of what the reference area obtained. However, according to the tests of our study, this had no significant effect on the difference, quantity and quality of production along the radius at the 5 % level. In light of these results, we concluded that the productivity of the irrigation water component fundamentally differs between the areas along the axis, which means that this irrigation method is not economical in sandy soils.
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    Morphological and anatomical comparison of leaves of date palm cultivars (Phoenix dactylifera L) grown in the southeastern region (Algeria)
    (Edirne. Turkiye, 2023-09-18) Hacene Laouedj
    This study was carried out in the laboratory of the Faculty of Natural and Life Sciences at the University of ElOued. Where this work aims to study the anatomical comparison for leaves from the date palm of five varieties (Garess, Hamray, White Deggla, Nour Deggla, Tekermist) and cultivated in the area EL-oued (Hassi Khalifa), Through a morphological description (The length and width of the frond, payoff) and anatomical study (the diameter of the clipsome of the leaf, the diameter of the large, medium and small vascular bundles, the diameter of the large fibrous bundle, the number of fibrous bundles between the two large bundles, the number of small and medium vascular bundles between the two large bundles, The area of the primary and secondary wood in the large beam, the thickness of the epidermis and waxy layer and the middle tissue). Through the results obtained, it was found that the Hamraya varietiy achieved the most returns by the number of buds in the palm, Where this breed is distinguished (Hamraya) With the largest number in the medium vascular bundles compared to other varieties, It was also characterized by the smallest thickness of the wax layer, the diameter of the medium vascular bundle as well as the diameter of the large fibrous bundle, while in The rest of the characteristics were average compared to the other varieties.
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    Study of the nutritional value of seeds and leaves of some quinoa cultivars Chenopodium Quinoa Willd
    (Edirne. Turkiye, 2023-09-18) Ghemam Amara Djilani; Messaoudi Mohammed; Hacene Laouedj
    The aim of this study is knowing some of the chemical properties of four quinoa plant varieties (white, red, black and V2). Where we focused on the chemical and nutritional compositions of the quinoa plant, and the changes are represented in the elements of nutritional value (compounds of primary metabolism, secondary metabolism and mineral content). In addition to determining electrical conductivity and acidity (pH). The results showed that white quinoa seeds are characterized by a high content of proteins compared to the other three varieties. The fat and carbohydrate content were better in red quinoa followed by black quinoa while V2 variety was the lowest content. Regarding the value of the mineral content, the content was somewhat weak for the four studied varieties, within the range of 3.5%. The results of the study on the leaves show that the mineral content is high in the range of 35%. Whereas the highest protein content was found in black quinoa leaves. The content of carbohydrates and fats was relatively high for the white quinoa, followed by the red quinoa. All of this is due to genetic factors related to the quality of seeds, plant morphology, the extent of their adaptation and tolerance to various stresses and the various influences of climatic factors.