Faculty of natural and life science_PPI

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Browsing Faculty of natural and life science_PPI by Author "Ghemam Amara, Djilani"

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    Effect of some agricultural residues on the characteristics of growth and yield of the onion bulb (Allium cepa L)
    (University of eloued جامعة الوادي, 2019-04-15) Ghemam Amara, Djilani; Rebiai, Abdelkrim; Alia, Zaid; Djihad, Saoud; Kherraz, Khaled; Mesbahi, Mohammed Adel; Chemsa, Ahmed Elkhalifa; Senoussi, Mohammad Mourad
    the study was conducted at the primary school farm in Rabbah zone during in 2016/2017 season, To evaluate the contribution of fram residues (palm residues, Peanut Peels, cooked tea leaves) in vegetative growth and the bulb onion in addition to the total yield of onion plant. An investigation was a randomized complete block design in three replications. The obtained results of experiment showed that: - Application of fertilize by cooked tea leaves were significantly better in of the studied characters (plants height and Leaves Area) with rate increased to 47.15% and 93.4% respectively, than control treatment. Followed by T1 and then T3. - Peanut Peels treatment gave the largest number of tubular blades in the plant(12.33), the diameter of the bulb neck(13.48mm) and bulb Length(7.35cm) than other treatments. Followed by T2 and then T3. -cooked tea leaves plants gave highest diameter of bulb(5.42cm), highest bulb weight(66g) and yield(20.85 t/ha) in the season. where Achieving with T1(18.35t/ha) significantly increase in the yield total in comparison with other treatments.
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    Morphological and anatomical comparison of leaves of date palm cultivars (Phoenix dactylifera L) grown in the southeastern region (Algeria)
    (University of Eloued جامعة الوادي, 2023-10-22) Laouedj, Hacene; Kheraze, Khaled; Ghemam Amara, Djilani; Keddour, Abdelbaset
    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, Hamraya, Deggla Bidha, Deggla Nour, Tekermist) and cultivated in the area EL-oued, Through a morphological description (Length and width of the frond, yield) and anatomical study (the diameter of the leaf, Diameter of the large, medium and small vascular bundle, the diameter of the large fibrous bundle, the number of fibrous bundle 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 variety achieved the highest yield in the number of inflorescences per palm tree, This variety (Hamraya) was characterized by the largest number of medium vascular bundles compared to other varieties, It was also characterized by the smallest thickness of the waxy layer, the diameter of the medium vascular bundle as well as the diameter of the large fibrous bundle, As for the rest of the studied characteristics, they differed between the largest and the smallest compared to the other varieties. نفذت هذه الدراسة في مخبر كلية العلوم الطبيعة والحياة في جامعة الشهيد حمه لخضر بالوادي للسنة الجامعية 2021/2022. حيث يهدف هذا العمل الى دراسة المقارنة التشريحية لأوراق من نخيل التمر لخمسة أصناف (غرس، حمراية، دقلة بيضاء، دقلة نور، تكرمست) والمزروعة في منطقة الوادي (حاسي خليفة)، من خلال الوصف المرفولوجي (طول و عرض السعفة، المردود ) والدراسة التشريحية (قطر مقطع الورقة، قطر الحزمة الوعائية الكبيرة، متوسطة وصغيرة، قطر الحزمة الليفية الكبيرة، عدد الحزم الليفية بين الحزمتين الكبيرتين، عدد الحزم الوعائية الصغيرة والمتوسطة بين الحزمتين الكبيرتين، مساحة الخشب الأولي والثانوي في الحزمة الكبيرة، سمك البشرة والطبقة الشمعية والنسيج الوسطي). من خلال النتائج المتحصل عليها تبين أن صنف حمراية حقق أكثر مردود من خلال عدد النويرات في النخلة، حيث تميز هذا الصنف (حمراية) بأكبر عدد في الحزم الوعائية المتوسطة مقارنة بالأصناف الأخرى، كما تميزت بأصغر سمك للطبقة الشمعية، قطر الحزمة الوعائية المتوسطة وكذلك في قطر الحزمة الليفية الكبيرة، أما في باقي الصفات فكانت متوسطة مقارنة بالأصناف الأخرى.