Show: 25 50 75 100 Results

Search results: 10 out of 35

استخدام ثلاث انواع من مؤشرات الـ DNAلدراسة التنوع الوراثي لعددمن اصناف الحنطة المنزرعةفي العراق

Author name: الاء فاروق سامي التكريتي
Supervisor name: عقيل حسين العاصي
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
University location: Salahaddin

دراسة بعض الصفات الفيزيائية والكيميائية والحياتية لمياه نهر دجلة ضمن مدينة تكريت == Study of Some Physical, Chemical And Biological Properties On Tigris River In Tikrit City

Author name: بشار طارق اسماعيل هلال الشنداح
Supervisor name: رياض عباس عبد الجبار
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:
Abstract: تهدف الدراسة الحالية للتعرف على بعض الجوانب الفيزيائية والكيميائية والحياتية لمياه نهر دجلة ضمن مدينة تكريت ولمياه المخلفات السكنية في محطة المعالجة.جمعت العينات لمدة سبعة اشهر اعتبارا من شهر تشرين الثاني 2006 وحتى نهاية شهر ايار 2007 وبمعدل مرتين شهريا | The present study aimed to find out some physical, chemical and biological aspects of Tigris river passed in Tikrit - city, and population residence in the treatment unit.Samples were collected over the period of seven months during November 2006 to the end of May 2007 biweekly. Four stations were selected for sample collections over the distance of 25 km. Two stations were in Tigris river and two were in the treatment unit. The first selected station was close to the old water purification unit in Tikrit - city. The second station was selected at the treatment unit in AL - Dubaee before the mechanical treatment unit. The third station was selected at the treatment unit after the biological treatment. The fourth station was selected in Tigris river about ten km south of the treatment unit at AL - Dijla town. The study involved an investigation of some physical, chemical and biological aspects of Tigris river and the residence waste discharges to the river. This included air and water temperature, conductivity, PH, dissolved oxygen, BOD, Turbidity, total hardness, calcium and magnesium hardness, chloride, total alkalinity, nutrients (i.e., phosphate, nitrite, silica) , and the concentrations of heavy metals (i.e., cadmium and cupper). The biological factor included the total bacteria counts cultured on nutrient agar. Results of the study clarify the close relation between air and water temperature which varied (8.5 - 36) C0 and (9 - 27) C0 respectively. Conductivity values were relatively high and ranged (128 - 3530) microsemens/cm. River water almost was alkaline during the period of the study. PH values of the first and fourth stations were close in the river, although a value of 6.12 was recovered at station on during May. In all stations, PH values ranged (8.8 - 6.12). River water has a good ventilation, dissolved oxygen values ranges (8 - 11) mg/L at the first and the fourth stations, while these values were (0.1 - 1.34) mg/L at the second and third stations. Mean dissolved oxygen values pointed out the availability of good oxygen concentration for the continuity of living organisms which ranged (0.3 - 5.8) mg/L in Tigris river, while BOD values at the stations second and third were high and ranged (5.6 - 131.2) mg/L. Turbidity was high during April at the stations one and four and ranged (2.03 - 788) NTU in all stations. Total hardness in Tigris river was slightly low - very hardness and ranged (120 - 360) mg/L at the first and fourth stations, while these values were (180 - 480) mg/L at stations two and three.The high total hardness values coincided with the high conductivity values. Concentrations of calcium ions responsible on the calcium hardness ranged (211.4 - 120.7) mg/ L was higher than magnesium ions responsible for magnesium hardness range (5 - 265) mg/L.Records of chloride ions ranged (14.16 - 169.99) mg/L at all stations. However, chloride values at stations first and fourth were among the allowed world values and ranged (14.16 - 42.48) mg/L.Alkalinity values were due to the carbonate and bicarbonate and ranged (35 - 725) mg/L.phosphate values ranged (0.168 - 25.2) µg phosphor atom - phosphate/L. Low nutrient values recorded in Tigris river, while the highest values recorded at second station (treatment unit).Nitrite values fluctuated at all stations and ranged (0.078 - 14.778) µg Nitrogen atom - Nitrite /L. Silica values ranged (648 - 5961.6) µg silicon atom - silica /L. Heavy metals values (Cadmium and Cupper) clarify that, Cadmium were (un sensible), except one value (0.008) mg/L that recorded at November, and un sensible for Cupper.Results of the statistical analyses of all involved factors showed significant differences at stations first and second, and between the first and third stations as well as the fourth station. While there was no significant differences between the second and fourth stations. And no significant differences between stations first and fourth.Total bacterial counts indicated high bacterial counts, and the average of total bacterial count ranged (2.605X105, 5.44X108, 2.265X108, 2.385X105) / ml at the four stations respectively, so the Tigris river considered pollutant - very pollutant.

التحري عن مؤشرات وراثية وفسلجية لتحمل الجفاف لصنفين من الحنطة Triticum aestivum L. == Investigation of Genetic And Physiological Markers For Drought Tolerance of Two Cultivars of Wheat (Triticum Aestivum L)

Author name: اشواق ابراهيم بشير العبيدي
Supervisor name: شاكر مهدي صالح | عقيل حسين العاصي
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:
Abstract: تم في هذه الدراسة البحث عن امكانية ايجاد مؤشرات وراثية ترتبط بمؤشرات فسلجية وذلك من خلال الدراسة على مستويين : ا - المستوى الفسلجي : زراعة صنفين من الحنطة الناعمةL Triticum aestivum في حقول كلية الزراعة/ جامعة تكريت لموسم النمو 2010 - 2011، وذلك بزراعة بذو | This study was conducted to investigate a genetic marker linked to physiological marker through a design an outdoor experiment which includes two parts : - 1 - Physiological part : Included planting two cultivars of soft wheat (Triticum aestivum L.) in the fields of the college of Agriculture, university of Tikrit, during growth season (2010 - 2011). The stage of work had been done by cultivated the seeds of two cultivars of wheat (Sham - 6, Abu - Ghraib) in pots, when they reached the stage of (4 - 5) leaves it had been exposed to two dryness periods 7 and 10 days. It spread with growth regulator Indole Acetic Acid (IAA) (150 ppm) to know which type is more resistance for dryness through estimation of proline concentration as a physiological marker and to indicate the effect of IAA to reduce the dryness effect in some features of growth physiological function and yield component according to complete Randomize Design (CRD). Some markers of drought tolerance have been estimated including : proline content, chlorophyll concentration and the degree of membrane stability then plants were left for harvesting period. The results of the outdoor experiment were : 1 - Exposure the plants to dehydration periods during their growth caused reducing of the most studied characters (leaf area, plant height, tillers number, concentration of chlorophyll A and B and the total chlorophyll), while there was an increase in the content of the proline and the injury index of plasma membrane. 2 - Some characteristic did not showed effect by drought periods (dry weight of plant, number of days of flowering, spikes number, spike length, number of grains/ spike and weight of 1000 grains).3 - Sham - 6 cultivar was superior than Abu Ghraib - 3 in three characteristic (number of days of flowering, leaf area, weight of 1000 grains), while Abu Ghraib - 3 cultivar was superior in the grains number /spike than sham - 6 cultivar.4 - The concentration of IAA (150 ppm) had a different effect. It had a positive effect in the decrease drought for some characteristic (proline content, injury index of plasma membrane, leaf area, plant height, dry weight, spike number and grains yield).2 - Genetic part : DNA has been isolated from fresh leaves of two types of wheat, arrange yields of DNA were in the range of (40 - 150) micro gram per 1.5 gram of plant leaves, and the purity ranged between (1.2 - 1.7). The reaction PCR was done by using 11 primer of the Random Amplified Polymorphism DNA (RAPD) in addition to two pair of specific primer to detect the genes which are responsible for coding of two enzymes which involved in anabolism and catabolism of proline. The results obtained are as follows : - 1 - Five primer of RAPD did not appear any binding site (OPA - 18, OPL - 20, OPA - 11, OPQ - 17 and OPH - 14).2 - Six primer of RAPD have appeared main and monomorphic bands (OPO - 16, OPH - 07, OPN - 16, OPM - 20, OPJ - 13 and OPQ - 06), in addition to the absent of the other bands from some treatments. 3 - The two pair of specific primer have given three monomorphic bands with different molecules weight.4 - The primer (OPH - 07) has appeared a unique band with molecular weight (1670) pb for Sham - 6 cultivar during second drought period (10 days without hormone). These results obtained from this study were identical with physiological part in the ability of both types to drought tolerance

دراسة مظهرية وتشريحية مقارنة لانواع في اجناس معينة من العائلة المركبة Compositae (Asteraceae) في العراق == A Comparative Morphological And Anatomical Study of Species In Certain Genera From The Family Compositae (Asteraceae) In Iraq

Author name: عمـر خليل جاسـم محمد العباسي
Supervisor name: خليل ابراهيم عباس الشمري
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:
Abstract: تناولت الدراسة الحالية, دراسة مظهرية وتشريحية مقارنة لـ(10) انواع تعود لـ(9) اجناس من العائلة المركبة Asteraceae (Compositae) في العراق, كما وتبعت الاجناس قيد الدراسة الى عشيرتين Tribes : العشيرة الاولى : (Cardueae), وقد ضمت الانواع : (Arctium tomentosum, Ca | The current study dealt with the morphological and anatomical aspect that compared the (10) Species that followed (9) genera, These Species followed the family Compositae (Asteraceae) in Iraq. It also divided the genera under study to two tribes. The first tribe : (Cardueae), It included the Species : (Arctium tomentosum, Carlina vulgaris, Chardinia orientales, Cnicus benedictus and Notobasis syriaca). The second tribe : (Lactuceae), It included the Species : (Geropogon glabrum, Geropogon hybridus, Hedypnois cretica, Koelpinia linearis and Urospermum pecroides). The morphological study involved the roots according to the characteristics, the form and dimensions (the length and the diameter), the study of the stem by the character, the color and the indumentums, also the dimension (the high and diameter) it resulted good characteristics, enabled us to use it in isolation of the types. It is also discussed the leaf on the based of the quantifier and qualifier that involved the form of the leaf and the form of the peak and the base, the character of the blade margin and the epidermis. The study also high lighted the dimension of the blade (the length and the width), The morphological characteristics of the leaves have given a great Taxonomical value rather than the root and the stem. It also mentioned in this study the Inflorescences in general : the form and the diameter of the receptacle, the dimension of the inflorescence (length and width), and the characteristics of the phyllaries, the study of Achenes, the length of the beak, the character of the filaments that connected by the peak of the beak. The proper morphological characters of the Inflorescences made the contrastive among the characteristics of the Inflorescence in unique type. This great advantage is useful in the classification of the species. The anatomical study contains the study of the dermal tissue system that belong to the types under study, specially the stem, the leaf. It make clear the differences among the characters of the epidermis cells for the stem and the leaf (the upper and lower epidermises), It tackled the study of the Stomata at the leaf and the stem, and measure of the frequency at these members. It also discussed the fundamental and vascular tissue system of the root, the stem and the leaf through the study of their characteristics of the transversal sector. It is also studied the vascular bundles according to the thickness of the regions belonged to the xylem and phloem; the number of the xylem arms in each bundle and the number of the vascular elements in one xylem arm. The study involves the system of the veins into the leaf blade or that called (Venation), and the thickness of the veins and its course, the behavior of the vein's ends and the method of its contact with the leaf margin. In addition, the study dealt with the method of the joining veins the secondary by the primary and the third veins by the secondary. Thus, the study make clear the considerable advantages that distinguish the types each other. It is observed the characteristics of the leaf's venation is a constant character that depends upon to classify the species. At end of the study, It is used the results of the morphological and anatomical characteristics in comparison of the two tribes; Cardueae and Lactuceae that the studied species followed.

دور حامض الجاسمونك والشد الملحي في احداث بعض التغايرات بمستوى الايض الثانوي في مزارع الكالس لنبات الفنكا Vinca rosea L == The Role Of Jasmonic Acid And Salinity Stress In enhancing Some Modifications In The Secondary Metabolism Level In Callus Cultures Of Vinca rosea L.

Author name: عمر وسام جابر طه الالوسي
Supervisor name: شاكر مهدي صالح | هناء سعيد الصالح
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:

دراسة تاثير الاجهاد الملحي في بعض الصفات التشريحية والفسلجية لنبات الباقلاء Vicia faba L == Influence of salt stress on anatomical and physiological traits of broad bean Vicia faba L

Author name: اسامة عبد الوهاب حسين السامرائي
Supervisor name: ياسين محمد احمد
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:

تحديد التباين الوراثي لعدد من اصناف نخيل التمر في العراق باستخدام مؤشرات RAPD وISSR == Genetic Diversity identification for some Date Palm Varieties in Iraq by Using RAPD & ISSR Markers

Author name: معن حسن صالح ياسين
Supervisor name: عقيل حسين العاصي
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:

عزل وتشخيص بعض انواع جنس Streptomyce من بعض النباتات الطبية باستخدام الصفات الكيموحيوية والموشرات الوراثية العشواية للدنا == Isolation and Diagnosis of some Streptomyces Species from some Medical Plants using Biochemical Features and Randomly Genetic DNA Markers

Author name: محمد عبد الوهاب عبد الواحد السامرائي
Supervisor name: عقيل حسين علي العاصي
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:

تقييم فعالية انزيم البروتييز المعزول من انواع الفطر Trichophyton مع مستخلص الليمون بصرة Citrus aurantifolia == Evaluation of Protease activity Isolated from Trichophyton with extract Lime(Citrus aurantifolia)

Author name: فهد خلف ياسين الدليمي
Supervisor name: خليل ابراهيم بندر | نزار احمد ناجي
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:

استخدام مؤشرات RAPD لتحليل التباين الوراثي لبعض انواع الفطريات الجلدية == Use of RAPD marker to analysis genetic diversity some dermatophyt species

Author name: سويس يونس حمادي حسين
Supervisor name: خليل ابراهيم بندر | عقيل حسين العاصي
General topic: Biology
Specific topic: Plant
Degree: Master
University: Tikrit University - College Of Science - Department Of Biology
Language: Arabic
University location: Salahaddin
First pages:
1 2