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Article
Mitotic activity of cultured human lymphocytes treated with gold nanoparticles

Authors: Sumaiah I. Hussein --- Yahya D. Saihood --- Ayda M. Majeed --- Heba F. Hassan --- et al.
Journal: Iraqi Journal of Cancer and Medical Genetics المجلة العراقية للسرطان والوراثة الطبية ISSN: 20786123 Year: 2017 Volume: 10 Issue: 2 Pages: 212-215
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Potential health and environmental effects of nanoparticles need to be thoroughly assessed before their widespread commercialization.The present investigation was planned with the aims to determine the effects of gold nanoparticles (GNPs) onblast (BI) and mitotic (MI) indices of cultured lymphocytes. The results revealed that BI (50.3 ± 2.3, 30.2 ± 1.9, 10.5 ± 0.7 and0.0%, respectively) and MI (70.1 ± 2.9, 20.4 ± 1.1, 5.3 ± 0.1 and 0.0%, respectively) showed a gradual decreased percentageas the concentration of GNPs was increased from 0.085 to 0.66 μg/mL, and the difference was significant compared to controlculture (81.6 ± 2.5 and 90.2 ± 3.7%, respectively). A maximum inhibition of BI and MI was occurred at the concentration 0.66μg/mL. In conclusion, GNPs can be considered as a growth inhibiting agent, but it is too early to reach a final conclusion inthis regard and further investigations are required to elucidate the biochemical mechanisms involved in inhibiting the mitoticactivity of lymphocytes.


Article
Salivary Free Testosterone and Gingival Health Condition among a Group of Women with Polycystic Ovary Syndrome

Authors: AndalusAbid HassanTahir --- Baydaa Hussien
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 1 Pages: 165-169
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders affecting women in their reproductive age.It is characterized by anovulation or oligo-ovulation and hyperandrogensim.Androgen excess is the central defect in polycystic ovary syndrome. It is a complex disorder affects general health in addition to oral health.This study aimed to assess the gingival health status among a group of women with polycystic ovary syndrome as well as to estimate the levels of salivaryfree testosterone in unstimulated saliva in relation to gingival health condition.Materials and methods: Sixty two women with an age range 20-25 years old and with a body mass index range18.5-24.9 (normal weight) were included in this study. They were divided into two groups; the study group which included thirty one women with polycystic ovary syndrome, those women.nattended Babylon Teaching Hospital/ Infertility Center and the control group which included thirty one women with regular menstrual cycles,without clinical or biochemical features of hyperandrogenism and ultrasound exclusion of polycystic ovary (without polycystic ovary syndrome). Collection of unstimulated salivary samples was carried out under standardrizedconditions, salivary free testosterone levels were estimated. Plaque index of Silness and Lӧe (1964) was used to assess dental plaque. While gingival index of Lӧe and Silness (1963) was used to assess gingival inflammation. Data analysis was conducted through the application of the (SPSS version 18). The analysis of data included: Mean, Standard deviation, t-test, Pearson Correlation (r), Receiver Operative Characteristics Curve (ROC curve).Results:Results showed that the mean value of plaque index was found to be higher in the control group (1.18±0.03) than that in the study group (1.00±0.08) with statistically highly significant difference (p<0.01).While the mean value of gingival indexwas higher among the study group (1.52±0.06)than that in the control group (1.31±0.05)with statistically highly significant difference (p<0.01).Salivary levels of free testosterone among women with polycystic ovary syndrome (44.12±1.37 pg/ml) were found to be higher than that of control (18.50±0.87) with statistically highly significant difference (p<0.01).The results in this study showed that the correlations between salivary free testosterone with the oral variables (plaque index, gingival index) were statistically not significant (P>0.05).In order to assess the specificity and sensitivity of the use of salivary free testosterone as a diagnostic tool, statistical analysis of Receiver Operative Characteristics Curve (ROC) was used and predictive Value Measurmentswere done in this study. The results showed that the area under the curve for salivary free testosterone test was (1.000) with highly significant p-value (p<0.01). The best optimal cut off point for salivary free testosterone was (30.86) with (100%) sensitivity and specificity, indicating a very good predictive capacity for using salivary free testosterone as a marker for the diagnosis of polycystic ovary syndrome.Conclusions : It was concluded that gingival inflammation was high among women with polycystic ovary syndrome. Furthermore, salivary levels of free testosterone were found to be high among women with polycystic ovary syndrome


Article
Comparison Of Oral Health Status And Behaviorbetween First And Fifth Years Of Al-Mustansiriyah Dental Students

Author: Athraa A. Mahmood
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 2 Pages: 71-77
Publisher: Baghdad University جامعة بغداد

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Abstract

Background:Periodontal diseases and dental caries are the most common oral diseases, but they can beadequately prevented by adopting a specific health behavior and plaque control.The study was carried out todetermine and compare oral health status; it included both caries experience, gingival health and oral hygienebehavior betweenfirst and fifth yearsof Al-Mustansiriyahdental students.Materials and methods: Total sample of the study consisted of 50 students at first year (25 males, 25 females)and 60students at fifth year (30 males, 30 females). Plaque andgingival indices,dental caries indices (DMFS and DMFT)wererecorded to evaluateoral health status for each student. Further questionnaires were given to evaluatedifferent oral hygiene habits.Results: The mean values of plaque and gingival indicesin the first year were higher than fifth year for males andfemales with highly significant difference at (P ≤0.01);whereas the mean values of plaque index were (1.17, 0.83 formales of first and fifth years respectively and 1.02, 0.47 for femaleof first and fifth years respectively)and the meanvalues of gingival index were(0.89, 0.51 for males of first and fifth years respectively and 0.78, 0.31 for femalesof firstand fifth years respectively). As well as, the mean of (DMFS and DMFT) were showed higher values among femalesthan maleswhere (8.88, 6.48 for males and 10.16, 7.08 for females)in first year, while(11.90, 8.73for males and 13.33,9.16 for females) infifth year. The percentagesof tooth brushing, mouthwash, dental floss, and tooth picks usingforfifthyear students were higher than first year students.Conclusion: Differences of oral health statusand behavior rates between first and finalyearsstudents can beattributed to low level of dental education infirst year studentswhoseneed the improvements of oral hygieneeducation in futurewhich include the importance of proper tooth brushing and using of interdental aids to preventthe periodontal diseases and dental caries


Article
Compression Index and Compression Ratio Prediction by Artificial Neural Networks
التنبؤ بمؤشر ونسبة الانضغاط بواسطة الشبكات العصبية الاصطناعية

Authors: Abbas Jawad Al-Taie عباس جواد الطائي --- Ahmed Faleh Al-Bayati احمد فالح البياتي --- Zahir Noori M. Taki زاهر نوري محمد تقي
Journal: Journal of Engineering مجلة الهندسة ISSN: 17264073 25203339 Year: 2017 Volume: 23 Issue: 12 Pages: 96-106
Publisher: Baghdad University جامعة بغداد

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Abstract

Information about soil consolidation is essential in geotechnical design. Because of the time and expense involved in performing consolidation tests, equations are required to estimate compression index from soil index properties. Although many empirical equations concerning soil properties have been proposed, such equations may not be appropriate for local situations. The aim of this study is to investigate the consolidation and physical properties of the cohesive soil. Artificial Neural Network (ANN) has been adapted in this investigation to predict the compression index and compression ratio using basic index properties. One hundred and ninety five consolidation results for soils tested at different construction sites in Baghdad city were used. 70% of these results were used to train the prediction ANN models and the rest were equally divided to test and validate the ANN models. The performance of the developed models was examined using the correlation coefficient R. The final models have demonstrated that the ANN has capability for acceptable prediction of compression index and compression ratio. Two equations were proposed to estimate compression index using the connecting weights algorithm, and good agreements with test results were achieved.

ان معرفة خصائص الانضمام للتربة مهم في التصميم الجيوتقني. نظرا للوقت والنفقات المتضمنة في إجراء اختبارات الانضمام، فإن المعادلات التجريبية التي تتضمن مؤشرات خصائص التربة مطلوبة لتقدير مؤشر الانضغاط. وعلى الرغم من اقتراح العديد من المعادلات التجريبية المتعلقة بخصائص التربة، فإن هذه المعادلات قد لا تكون مناسبة للحالات المحلية. الهدف من هذه الدراسة هو إقامة علاقة ارتباط بين خصائص الانضمام والخصائص الفيزيائية للتربة المتماسكة. وقد تم استخدام الشبكة العصبية الاصطناعية (ANN) للتنبؤ بمؤشر ونسبة الانضغاط من الخصائص لأكثر بساطة. تم استخدام مئة وخمسة وتسعين نتيجة اختبار انضمام للتربة التي تم أخذ عيناتها من مواقع البناء المختلفة في مدينة بغداد. استخدمت 70٪ من هذه النتائج لتدريب نماذج الـ(ANN) وباقي النتائج قسمت بالتساوي للاختبار والتحقق من صحة نماذج الـ(ANN). تم فحص أداء النماذج الرياضية المطورة باستخدام معامل الارتباط R. وقد أظهرت النماذج النهائية قدرة الـ(ANN) على التنبؤ باؤشر الانضغاط ونسبة الانضغاط بشكل مقبول. تم اقتراح معادلتين لتقدير مؤشر الانضغاط باستخدام خوارزمية أوزان الربط (connecting weights algorithm)، وتم التوصل إلى تقارب جيد مع نتائج الاختبار


Article
Effect of Class II Amalgam and Composite Restorations on Periodontal Health of Posterior Teeth: An in vivo study

Authors: Saher S. Gasgoos --- Sarra A. AL-Sanjary
Journal: Journal of Oral and Dental Research مجلة طب الفم والاسنان ISSN: 23106417 Year: 2017 Volume: 4 Issue: 2 Pages: 82-92
Publisher: Iraqi Association for Oral Research الجمعية العراقية لبحوث طب الفم

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Abstract

Background Periodontal health at the restorative gingival interface continues to represent one of the most diffcult challenges. Unfortunately, they only mimic the physical and morphological aspects of teeth, as they are limited by the absence of the ‘ideal material’ that would provide characteristics similar to the normal tooth structure. Aims To determine the influence of class II amalgam and composite restorative materials on plaque accumulation, gingivitis and periodontal pocket depth. Materials and Methods One hundred patients were included in the study. The age ranged between (21-24) years old. The sample was composed of two groups (50 patients each), with an equal ratio of males and females. The tested restoration types were: amalgam class II (MO) and composite class II (MO) of 2-3 years. The following periodontal parameters: plaque index (PI), gingival index (GI) and pocket depth (PD) in mm were recorded for each restored tooth compared with non-restored tooth on the other side of the mouth as a control. Results The results showed that amalgam induce the higher means of plaque, gingivitis and pocket depth compared with composite. The mean of the three parameters, as compared to control group, were statistically higher in the restored amalgam surfaces (p<0.05). For composite restoration the means of the three parameters were also higher but not in signifcant levels for both plaque index and gingival Index, except for pocket depth of the restored surfaces were signifcantly higher than the controlled surfaces. However, there were no signifcant differences in the ranks of the three mesial indices of patients having amalgam in comparison with those having composite. Conclusion This study suggests that composite restorations did not have a signifcant advantage on periodontal health over amalgam restorations for Class II posterior teeth.


Article
The relationship between Reactive Oxygen Species and Insulin resistance of Obese individuals in Babylon /Iraq
العلاقة بين أنواع الأكسجين التفاعلية ومقاومة الأنسولين لدى الأفراد البدينين في بابل / العراق

Authors: Amera Kamal Mohammed اميرة كمال --- Alaa Jawad Hassan الاء جواد
Journal: Al-Kufa University Journal for Biology مجلة جامعة الكوفة لعلوم الحياة ISSN: 20738854 23116544 Year: 2017 Volume: عدد خاص Issue: المؤتمر العلمي الدولي الاول للتقنيات الطبية والبيولوجية / للفترة 8-9 آذار 2017 Pages: 251-256
Publisher: University of Kufa جامعة الكوفة

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Abstract

The aim of this study was to evaluate the relationship between Reactive Oxygen Species and Insulin resistance the measured by homeostasis model assessment of insulin resistance (HOMA index) at Obese individuals in Babylon /Iraq, who do not suffer from chronic diseases. This study was performed in department of nutrition at the Murjan teaching hospital / in Babylon province/Iraq, in April 2016.

كان الهدف من هذه الدراسة هو تقييم العلاقة بين أنواع الأكسجين التفاعلية ومقاومة الأنسولين التي تم قياسها من خلال تقييم نموذج التوازن في مقاومة الأنسولين (HOMA index) لدى الأفراد البدينين في بابل / العراق ، الذين لا يعانون من أمراض مزمنة. أجريت هذه الدراسة في قسم التغذية في مستشفى المرجان التعليمي / في محافظة بابل / العراق ، في أبريل 2016.


Article
EVALUATION OF GROUNDWATER QUALITY FOR DRINKING PURPOSE IN BASRAHGOVERNORATE BY USING APPLICATION OF WATER QUALITY INDEX
تقييم نوعية المياه الجوفية لأغراض الشرب في محافظة البصرة باستخدام تطبيق مؤشر جودة المياه

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This study aims to apply Water Quality Index (WQI) to evaluate quality of groundwater samples collected from Basrah governorate south of Iraq. The samples were collected from (29) wells located in different districts of Basrah governorate (Safwan, Zubair, and Um-Qasr) during Summer Season of 2015. The groundwater samples were analyzed for pH, electrical conductivity, total dissolved solids and other major ions. For calculating WQI, eleven parameters; pH, EC, TDS, Total hardness as CaCO3, Calcium, Magnesium, Sulphate, Chloride, Nitrate, Sodium, and Potassium have been considered. The suitability of groundwater in the study area for human drinking purpose was achieved by WQI depending on guideline values of World Health Organization (WHO 2011) for chemical parameters. Then, the weights (Wi) were assigned to the parameters based on their influence on human health. The results showed that the (WQI) values for the groundwater of study area varied from poor to unsuitable for human drinking purpose.

) لتقييم عينات المياه الجوفية في محافظة البصرة جنوب WQI)تهدف الدراسة الحالية إلى تطبيق مؤشر جودة المياه ) بئرا من أقضية مختلفة (سفوان، الزبير و أم قصر ) في 29 من ( 2015 العراق. تم جمع العينات في موسم الصيف لعام محافظة البصرة . تم تحليل عينات المياه الجوفية كيميائيا ً من حيث درجة الحموضة ، التوصيل الكهربائي، المواد الصلبة الكلية والايونات الرئيسية . لحساب مؤشر نوعية المياه (( ، تم الأخذ بنظر الاعتبار احد عشر محددا وهي درجة WQI ، العسره الكلية بدلالة كاربونات الكالسيوم (EC ) ، التوصيلية الكهربائية ( TDS) ، المواد الصلبة الكلية (PHالحموضة ( ، الكالسيوم، المغنيسيوم ، الصوديوم، البوتاسيوم ، الكبريتات ، الكلوريدات ، النترات لغرض النظر فيها . وقد CACO3 ) في منطقة الدراسة لغرض الشرب البشري اعتمادا على القيم الإرشادية لمنظمة WQI)تحققت ملائمة المياه الجوفية للمعاملات على أساس مدى (WI للمعاملات الكيميائية التي تم اعتمادها. و قد تم تعيين وزن ( (WHO)الصحة العالمية ) للمياه الجوفية لمنطقة الدراسة WQI) تأثيرها الملحوظ على صحة الإنسان إلى حد كبير . أظهرت نتائ الدراسة إن تتراوح من رديئة إلى غير مناسبة لأغراض شرب الإنسان.


Article
Doppler Index And Associated Artery Most Correlated To Intrauterine Growth Restriction Due To Maternal Preeclampsia At 28- 34 Weeks Gestational Age
حساب معامل الدوبلر و الشريان الذي يترابط معه للجين المصاب بتخلف نموا الجنين بين الاسبوع 28- 34 من الحمل و المصاحب لمتلازمة ماقبل الارتعاج في الام

Authors: Wisam Akram وسام أكرم --- Najlaa Hanoon نجلاء حنون --- Sara Abid Abdalla سارة عبد عبد الله
Journal: Mustansiriya Medical Journal مجلة المستنصرية الطبية ISSN: 20701128 22274081 Year: 2017 Volume: 16 Issue: 1 Pages: 15-22
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Aim of the study: to find the artery and associated Doppler index most correlated to intrauterine growth restriction as a secondary complication to maternal preeclampsiaType of the study: case control Methods: over almost 3 years a total of 80 pregnant women with established IUGR were collected and their fetal weight and Doppler indices were taken for umbilical artery, middle cerebral artery and fetal renal artery and stored in excel sheets for further analysis. At the end of the study partial least square fit was used to find the Doppler index in any of the 3 mentioned arteries most correlated to fetal weight. All the data collected with regard to the umbilical artery and fetal weight was standardized so to overcome the natural changes in those variables which occur as pregnancy advances.Results: the Doppler index and the artery with highest coefficient were the fetal renal artery and its resistance index. The coefficient for this Doppler index was 6.92. In other word the resistance index in fetal renal artery has the maximum predictive as well as diagnostic value for intrauterine growth retardation. Accordingly an equation was developed between resistance in the fetal renal artery as dependent index and gestational age as independent variable. From this equation an easy applicable table was constructed in clinical practice to evaluate the severity of the growth restriction from the calculated gestational age for the fetus with measured renal resistance Doppler index evaluated in the ultrasound departmentConclusion: this study has shown that resistance index in fetal renal artery is the Doppler index most correlated to fetal weight. And from the raw data an easy applicable table may be used as an auxiliary method in evaluation of fetuses with growth restriction. Under no circumstances this table should be used alone or as a 100% reliable table as useful in evaluation of fetuses with growth restriction until its clinical significance is evaluated by further searchers and clinical studies.

توع الدراسة؛ مقطعة اجريت باخذ 80 مريضة كل منهن مصابات بارتعاج ماقبل الولادة و المصاحب لتخلف نموا الجنينالهدف من الدراسة؛ معرفة الشريان و معامل الدوبلر المصاحب للشريان الذين يترابط اكثر مايمكن مع تخلف نموا الجنينخطة العمل؛ تم اخذ عينة من 80 مريضة كل واحدة مصابة بارتعاج ماقبل الولادة و المضاعف بتخلف نموا الجنين من وحدة السونار في مستشفى اليرموك التعليمي. استعمل قياس قطر الراس للجنين على قطر البطن لتشخيص تخلف نموا الجنين وذالك بكون قيمته اكثر من 1. و بعد موافقة المريضة على الدخول للدراسة اخذت قرائات الدوبلر لكل من الشريان الكلوي للجنين- الشريان السري و الشريان الصدغي لكل من معامل المقاومة- و معامل التعجيل و معامل انقباض القلب على الانبساط و خزنت المعلومات لتحليلها بعد اكتمال الدراسة. استغرقت الدراسة حوال 3 سنوات من بداية 2013 الى شهر ايار 2016 لاكمال اخذ 80 مريضة مع كافة المعلومات المحتاجة للتحليل. و فبل اجراء التحاليل تم توحيد كافة قرائات المعاملات للدوبلر بواسطة دالة الانتشار الطبيعي لتلافي الاختلافات بين الاسابيع المتتابعة للحمل و توحيدها الى مقياس واحدالنتيجة؛ بعد تحليل النتائج بواسطة تركيب المعادلات الجزئي تبين ان معامل المقاومةفي الشريان الكلوي هوا من اخذ اكبر قيمة eigenvalue بين المعاملات الاخرى لنفس الشريان و الشرايين الاخرى. بمعنى ان معامل المقاومة للشريان اللكلوي هوا المعامل الذين يترابط بقوة اكثر من الاخرى مع تخلف نموا الجنين. و عليه تم انشاء معادلة تربط بين العمر الجنيني كعامل مستقل و قيمة معامل المقاومة في الشريان الكلوي كمعامل معتمد و من المعادلة تم انشاء جدول سهل الاستخدام يمكن من خلاله معرفة مدى شدة تخلف الجنين من حساب العمر الجنيني للطفل و عدد الاسابيع و الرقم المؤي لمعامل المقاومة بكمية تخلفها عن القيم الموجودة في الجدول.استنتاج: تم انشاء طريقة بسيطة قابلة للتطبيق السريري لمعرفة شدة تخلف نموا الجنين من الجدول الذي تم انشائة. و لكن لكون هذا الجدول جديد و لايعرف مصداقيتيه لايجوز استعماله كطريقة مستقلة لمعرفة تخلف نموا الجنين بل يجب اجراء على الاقل 3 دراسات اما مشابهه لبروتوكول هذا البحث او مطابقة القيم الموجودة في البحث مع نتائج الفحوصات الاخرى لتقييم حالة الجنين و لمعرفة مصداقية هذه الجداول. وبعكسة فلا ننصح وبشدة استعمال هذه الجدول كطريقة معتمدة لتقيم حالة تخلف الجنين حتى ذالك الحين.


Article
Maximum Bite Force And Their Relation’s To Body Properties In Different Facial Type Among Iraqi Adult Female At Al Ramadi City

Author: Mohammed Khudher Abdulhammed
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2017 Volume: 14 Issue: 1 Pages: 169 -179
Publisher: Babylon University جامعة بابل

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Abstract

Maximal bite force (MBF) is the utmost force obtainable within the mouth using muscles of mastication .The purpose behind current research was to analyze the link between MBF & body properties (namely age, height, weight, Facial height, Facial Width, and Body Mass Index [BMI]) amongst females. Dental students & patients attending the Dentistry College Al Anbar University & at my private Clinic at AL Ramadi City 49 females fulfilling the inclusion criteria and included in this study. The sample classified according to the facial types into long, normal & short face. For Each participant the name, age, Body height, Body weight, the maximum bite force (M.B.F) were Measured. The Facial type determination was done Directly (Anthropometry). The descriptive statistics for all variable in different facial types had been measured. Short face and then the normal face had the largest bite force value whereas the long face had the smallest MBF value. ANOVA test revealed a very highly significant difference in Facial high, maximum bite force, while the Facial width showed a highly significant. The body mass index showed no significant differences among the three types of face. The Pearson’s Correlation of age showed positive correlation with height, facial width in long face, while in short face the height showed positive correlation with facial height, facial width. The weight appeared in positive correlation with the Body Mass Index in all facial types, and with facial width in short face only. The Facial height demonstrated positive correlation with the Facial width in all facial types. Lastly the MBF displayed Positive correlation with Body Mass Index in all facial type. A mean M.B.F for the total sample ranges from 205 to 657 N. The largest value of bite force were in the short face and the smallest value in long face. There were Positive correlation of BMI with the Maximum Bite Force & with the weight in all facial types.


Article
Selection Index Efficiency For Roots Traits In Drought Tolerance Of Maize (Zea mays L.) Genotypes,
كفاءة دليل الانتخاب لصفات الجذور في تحمل تراكيب وراثية من الذرة الصفراء (Zea mays L.) للجفاف

Authors: M. S. Ahmed مقداد صلاح الدين احمد --- F. A. Kadhem فوزي عبد الحسين كاظم
Journal: ANBAR JOURNAL OF AGRICULTURAL SCIENCES مجلة الأنبار للعلوم الزراعية ISSN: PISSN: 19927479 / EISSN: 26176211 Year: 2017 Volume: 15 Issue: 1 Pages: 95-110
Publisher: University of Anbar جامعة الانبار

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Abstract

To study the possibility of adopting root system properties as a selective function for drought tolerance of different mays genotypes. This study included 18 genotypes, planted by using plastic columns, 120 cm height and 50 cm diameter, under two levels of plant available water consumption and use Randomized Complete Block Design (RCBD) with three replicates, the main plots were for water stress, 25% and 75% plant water available consumption, while the subplots were for genotypes in both field experiments. In addition, G10 gave higher root length of 131.33 and 134 cm in spring and autumn, respectively. G15 gave a higher root dry weight at Yp and Ys treatments, while G13 gave a higher dry weight at Ys and Yp treatments autumn seasons. Through experimental results shows no significant correlation between some recipes root and guide stress tolerance Index (STI) recipe dry weight has been marked by the roots of a high correlation between indicators of drought tolerance and both seasons. So can plant breeders use recipes dry weight of the root and the vertical angle electoral evidence to withstand dry.

بهدف دراسة إمكانية اعتماد صفات المجموع الجذري كدالة انتخابية لتحمل الجفاف لتراكيب وراثية مختلفة من الذرة الصفراء نفذت تجربة حقلية باستخدام الأعمدة البلاستيكية خلال موسمي الزراعة الربيعي والخريفي لعام 2015. اشتملت هذه الدراسة على 18 تركيب وراثي، زرعت في أعمدة بلاستيكية بارتفاع 120سم وبقطر 50سم، تحت تأثير مستويين من استنفاذ الماء الجاهز للنبات. استعمل ترتيب الألواح المنشقة بتصميم القطاعات الكاملة المعشاة (R.C.B.D) بثلاثة مكررات، احتلت الألواح الرئيسة مستويات الإجهاد الرطوبي وهي استنزاف 25 و75 % من الماء الجاهز للنبات، فيما احتلت التراكيب الوراثية الألواح الثانوية. أظهرت نتائج التحليل الإحصائي وجود اختلاف معنوي بين التراكيب الوراثية على الصفات المدروسة، إذ تفوق التركيب الوراثي G10 الذي أعطى أعلى معدل عمق الجذر 131.33 و134سم للموسمين الربيعي والخريفي بالتتابع. وأعطى التراكيب الوراثي G15 اعلى وزن جاف للجذر عند المعاملة Yp وYs للموسم الربيعي بينما أعطى التركيب الوراثي G13عند المعاملة اعلى وزن جاف للمعاملتين Ys و Ypللموسم الخريفي. من خلال نتائج التجارب يتبين وجود ارتباط معنوي بين بعض صفات المجموع الجذري ودليل تحمل الجفاف Stress Tolerance Index فقد تميزت صفة الوزن الجاف للجذور بارتباط عالٍ بينها وبين مؤشرات تحمل الجفاف ولكلا الموسمين. لذا يمكن لمربي النبات استخدام صفات الوزن الجاف للمجموع الجذري والزاوية العمودية كأدلة انتخابية لتحمل الجاف.

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