جدول المحتويات

مجلة العلوم الزراعية العراقية

ISSN: ISSN:00750530 / EISSN:24100862
الجامعة: جامعة بغداد
الكلية: الزراعة
اللغة: Arabic and English

This journal is Open Access

حول المجلة

تأسست مجلة العلوم الزراعية العراقية في كلية الزراعة جامعة بغداد عام 1966. كانت المجلة تصدر بعددين في العام فقط. بدأت المجلة عام 2000 باصدار ستة اعداد في السنة لكل مجلد, وهي الان في عام 2016 بالمجلد (47). تشمل ابحاث المجلة كافة العلوم الزراعية المرتبطة بالعلوم النباتية والحيوانية فضلاً عن المكننة الزراعية والاقتصاد الزراعي والارشاد الزراعي والعلوم الداعمة للعلوم الزراعية مثل الكيمياء والفيزياء لاسيما المرتبطة بالضوء والالحرارة والرياح وغيرها. يتضمن المجلد الواحد حالياً اكثر من 75 بحثأ حيث يتضمن العدد الواحد بين 20-25 بحثاً بحسب عدد الابحاث المقبولة في كل عدد

Loading...
معلومات الاتصال

tijasub@yahoo.com
tel :
009647804541817
009647512748875
address:
college of Agric. / Univ. of Baghdad
Al Jadreah, Baghdad, Iraq

جدول المحتويات السنة: 2012 المجلد: 43 العدد: special issue -2

Article
INDUCING RESISTANCE AGAINST RHIZOCTONIA SOLAN I USING AZOTOBACTER CHROOCOCUM AND TRICHODERMA HARZIANUM IN POTATO PLANTS
استحثاث المقاومة في نبات البطاطا ضد الفطر Rhizoctonia solani باستخدام بكتريا Azotobacter chroococcum والفطر Trichoderma harzianum *

Loading...
Loading...
الخلاصة

In an experiment conducted at soil science and water resource department/College of Agriculture to investigate the induce resistance in potato plants against Rhizoctonia solani. Azotobacter chroococum and Trichoderma harizanum were isolated and identified from farm soil located at Baghdad and Anbar province to be used individually or together to assess their effect on Rhizoctonia solani the causal agent of black scurf disease of potato in a greenhouse experiment according to CRD design. Analysis of plant leaves protein showed two bands with molecular weight of 32.00 and 29.00 KD in plants treated with R. solani and disease severity 3.54 for the stem, 3.53 for tubers. One protein band with 38.00 KD mwt was observed in T. harizanum and R. solani with disease severity 1.00 for stem, 0.71 for tubers. Two protein bands with 29.00, 32.00 KD mwt were appeared in A. chroococum and R. solani treatment with disease severity 0.71 for stems and tubers. Three protein bands 38.00, 40.00, 42.00 KD mwt were appeared in T. harizanum and A. chroococum and R. solani with disease severity 1.6 for stems and 0.71 for tubers.

الكلمات الدلالية


Article
INVESTIGATION FOR AFLATOXIN B1 , FUMONISIN B1 AND TOXIN PRODUCTING FUNGI IN MAIZE GRAIN
التحري عن السمين افلاتوكسين B1 والفيومنزين B1 والفطريات المنتجة لهما في حبوب الذرة الصفراء

Loading...
Loading...
الخلاصة

The study was carried out to investigate the presence of aflatoxin B1, fumonisin B1 and associated fungi on corn seeds during fall season in AL-Anbar province. Eight samples were collected from different sites of province, two samples from each of Ramadi, Saqlawiya and AL-Qaim city and one sample from Heet and Hadetha. Thin layer chromatography separation technique was used for mycotoxin detecting in samples. The results showed that many fungi were associated with corn seeds in tested samples and were variated in genus, existence and percentage. Results showed that the highest mean of contamination was by Aspergillus Sp in samples ramadi (1) and (3) reached to 43% and 41% respectively followed by sample Hadetha (8) with 40% while the lowest means were recorded in saqlawiya sample (5) and heet (6) with a percentage of 33% for both. Fusarium species came in second sequence of existence ratio in the samples, with highest mean in AL-Qaim samples (4) and (7) being 41% and 40% respectively. The lowest percentage was in ramadi sample (1)which was 23%. The penicillium species came in the third in the sequence of fungi contaminated corn seeds by highest and lowest percentage in AL-Qaim sample (4) and heet which were 42% and 15% respectively. Thin layer chromatography analytical results for aflatoxin B1 detection showed that many of positive samples indicated for aflatoxin levels were higher than allowable levels for poison coexistante that 100% percentage of contamination in heet sample (6) and AL-Qaim (4) by 160 and 110 µg/g respectively, followed by 75% of contamination in ramadi sample (1) and AL-Qaim (7) by 95, 85 µg/g respectively. Then saqlawiya samples (2) and (5) with 50% of contamination reached to 145, 200 µg/ g respectively. The lowest contamination and concentrate of toxin was found in hadetha sample (8) with 25% and 50 µg/ g respectively. Result of analytic also indicated that fumonisin B1 reached to 25% in ramadi samples (1), (3), saqlawiya (5) and 50% in saqlawiya (2), heet (6 ) samples and 100% in AL-Qaim sample (7) contamination with different levels of fumonisin B1 were revealed by flourescence density.

الكلمات الدلالية


Article
THE DETECTION OF ZERALENONE TOXIN IN MAIZE AND ITS DETOXIFICATION*
الكشف عن سم الزيرالينون في الذرة الصفراء وإمكانية أختزاله*

Loading...
Loading...
الخلاصة

This study was conducted in pesticide and mycotoxin laboratory, Department of Plant Protection, College of Agriculture, University of Baghdad to detect the zeralonine mycotoxin, produced by Fusarium graminearum in maize grains. Thirteen samples of maize grains were collected from Babel, Baghdad, Waste, and Nineveh governorates, previously proved contaminated with F. graminearum were used for toxin detection. The fungal isolates obtained were grown on rice grains substrate and the zeralenone was detected by HPLC. The more zeralenone producer isolate was selected, referred to as Zer-g-Ak, and grown on rice grains for inducing zeralenone production. Maize grains were thoroughly mixed with 2g of rice grains powder contaminated with Zer-g-Ak isolate, and used for evaluating the efficiency of some detoxification agents. The efficiency of some physical (bentonite and caoaline), biological (Sacchromyces cerevisia powder) chemical (urea), magnetized water, and magnetic ring to detoxification and reduce of zeralenone were tested. Bentonite and caoaline were added to contaminated maize grains at 5% for one month, S. cerevisia powder at 0.8g/2.5ml water/500 g grains for 24 hours, maize grains were soaked in magnetized water for 24 hours, and maize grains were passed 7 times through magnetic ring. The treated grains were dried in oven at 400C, grind and used for zeralenone concentration determination by HPLC. Results showed that 4 of 13 samples were found to be contaminated with zeralenone (30.75). The passage of contaminated maize grainsthrough magnetic ring, soaked in magnetized water, treated with, fylex, bentonite, urea, S. cerevisia powder and caoaline have led to reduce zeralenone in contaminated grains by 99.4, 97.7, 92.2, 88.2, 88.2, 88.1 and 65.5% respectively.

الكلمات الدلالية


Article
EFFECT OF PLANTING DATE AND DISEASE COMPLEX ON THE PRODUCTIVTY OF IRAQI WONDER AND BARCELONA EGGPLANT CULTIVARS UNDER FIELD CONDITIONS
تأثير موعد الزراعة والمعقد المرضي في انتاجية صنفي الباذنجان أعجوبة العراق وبرشلونة تحت الظروف الحقلية

Loading...
Loading...
الخلاصة

Iraqi wonder and Barcelona eggplant hybrid cultivars were sown on different planting dates (1/9/2002 to 7/3/2003) to evaluate their reaction to the disease complex Fusarium solani and Meloidogyne javanica, under field conditions in jabela/Babylon, Iraq. The plants were inoculated with M.javanica 5000 J2/plant and 19 g/plant F. solani grown on wheat bran medium. The date 15/12 showed the greatest difference in disease complex severity between the two hybrid cultivars which were 42.6% and 10.8% for Barcelona and Iraqi wonder hybrids respectively. The percentage of crop loss was very large between the pathogens inoculated and non-inoculated plants. Crop weigh were the highest in January,15 planting dates for pathogens inoculated Barcelona cultivar plants (42.2 ton/h) where as production was reduced to 4.2 ton/h for the October, 1. The results were similar for Iraqi wonder plants which reached 75.88 ton/h for December, 15 planting date compared with 55.56 ton/h for Barcelona at the same planting date, for pathogens non-inoculated plants. Production was reduced to 69.2 and 45.2 ton/h respectively, for cv. Iraqi wonder and Barcelona inoculated with the disease complex pathogens in December 15 planting date.

الكلمات الدلالية


Article
ISOLATION AND IDENTIFICATION OF THE CAUSAL AGENT OF CHARCOAL ROT DISEASE ON BEAN AND EVALUATION OF SOME BIOCONTROL AGENTS UNDER LABORATORY CONDITIONS
عزل وتشخيص الفطر المسبب لمرض التعفن الفحمي على الفاصوليا و تقييم كفاءة بعض العوامل الأحيائية ضده تحت ظروف المختبر

Loading...
Loading...
الخلاصة

This study was conducted to isolate and identify the causal agent of charcoal root rot disease on bean in Babylon governorate, and to examine the antagonistic ability of some biocontrol agents against the disease. The results of isolation and identification showed that Macrophomina phaseolina was present in these samples in a frequency of 3.8-76.3%., the fungus was identified up to the species level based on its cultural and morphological characteristics. A preliminary test of pathogenicity for M. phaseolina isolates showed that the isolates were differed in their effect on cabbage seed germination. The isolates MP-2B ،MP-3، MP-5 prevented seeds germination completely, compared with control (93.33 %). Results also showed that pathogenic isolates affected bean seeds germination percentage, which ranged between 0.0-17.5 % compared to 87.5% in control treatment (without pathogen). Four isolates of Azotobacter chroococcum were isolated. A. chroococcum caused significant inhibition in growth (25.25-100.0%) of M. phaseolina. T. harzianum was highly antagonistic against pathogenic isolate of M.phaseolina on PSA media.

الكلمات الدلالية


Article
EVALUATING THE EFFICIENCY OF MEDIA AND SOME OILS ON THE SPORULATION OF FUNGI ISOLATED FROM COGONGRASS AND THE ABILITY OF DRECHSLERA STATE OF COCHLIOBOLUS BICOLAR TO INFECT COGONGRASS.
تقييم كفاءة اوساط زرعية وبعض الزيوت في زيادة الكثافة اللقاحية للفطريات المعزولة من الحلفا وقابلية الفطر Drechslera stat of Cochliobolus bicolar على اصابة نباتات الحلفا

Loading...
Loading...
الخلاصة

This study was carried out to evaluate the efficiency of different media and their formula for increasing the sporulation of fungi isolated from Imperata cylindrica and improve the activity of Drechslera state of Cochliobolus bicolar with different oils. Results revealed that the culture medium of leaves and stems of Cogongrass was the best for fungus sporulation, that gave an average of 29.22 x 106 spore/10 gm of medium followed by crushed Rhizomes 27.80 x 106 spore/10 gm. The wheat bran with kaoline medium gave the lowest number of spore 8.6 x 106 spore/10 gm. Also the efficacy test for four different formula to maintain pathogenic fungi viability on Cogon grass has been found that crushed corn ear and wheat bran formula gave the higher capacity to preserve the viability and infectivity of pathogenic fungi, with mean number of colony forming units in the day zero of storage 108.90 x 106 CFU/gm, compared with102.2 x 106 and 94.31 x 106 after 3 and 6 month of storage respectively. The results of the evaluation of effect of different oils concentrations on Drechslera state of Cochliobolus bicolar growth revealed the superiority of corn oil at 2% and Dabana oil at 0.25% treatments in the preservation of fungus growth, Both treatments gavae radial growth of 9cm after 7days of incubation compared with 9 cm in the control treatment. In the laboratory study to evaluate the efficacy of some oils to maintain moisture , results showed the superiority of corn oil 2%, it maintain the water for 9 days, while other oils (Helb oil 0.25%, Dabana oil 0.25%, glycerin oil 1% and cestrol oil 0.25%) kepte the water for 8 days compared with 7 days in the control treatment. Results of evaluation the efficiency of some oils to increase the activity of the bio-control agents to increase the infection of Cogon grass under glass house conditions showed the superiority of corn oil 2% treatment which caused 71.87% disease severity followed by Helb oil 0.25% 58.12%.

الكلمات الدلالية


Article
ACTIVITY OF EFFECTIVE MICROORGANISMS AND FERMENTED PLANT EXTRACT AGAINST CAUSATIVE AGENTS OF CUCUMBER SEEDLING DAMPING OFF
فاعلية مستحضر الاحياء المجهرية والمستخلصات النباتية المتخمرة ضد الفطرين المسببين لمرض سقوط بادرات الخيار

Loading...
Loading...
الخلاصة

This study was conducted to evaluate the activity of effective non- pathogenic microorganisms (EM1) and fermented plant extract by these microorganisms (FPE), against Pythium aphanidermatum and Rhizoctonia solani of cucumber seedling damping off on culture media and in pots. The results showed that growth of P.aphanidermatum was totally inhibited on PDA medium amended with 3% of EM1 and FPE separately. EM1 was more effective than FPE against R.solani with an inhibition of 59.23% compared with 33.0% in presence of FPE on PDA medium. FPE showed high efficiency in reducing infection percentages by these two fungi in pots. The percentages of healthy plants in FPE treatment and contaminated with P. aphanidermatum were found 85.7% and 83.3% , compared with 81.0% and 75.0% in the soil contaminated with R.solani after 7 and 30 days respectively. The addition of 8 % bokashi to pots soil contaminated by R.solani has increased the percentage of healthy plants compared to the contaminated soil with fungus to only 76.2% and 56.7% respectively after 7 days, while it was statistically significant against the fungus P. aphanidermatum after 30 days of treatment, the percentage of healthy plants were found 75% compared to only 50% in contaminated soil with fungus. Results of this study indicated the possibility of using fermented organic matter as an alternative to chemical fertilizers and as a biocontrol agent alternative to chemical control in cucumber damping off management.

الكلمات الدلالية


Article
ISOLATION AND IDENTIFICATION OF THE PATHOGEN CAUSING ROOT AND STEM ROT DISEASE ON COWPEA AND EVALUATION OF THE AZOTOBACTER VINELANDII EFFICACY FOR CONTROLLING THE DISEASE UNDER LABROTARY CONDETIONS
عزل وتشخيص مسبب مرض تعفن جذور وقواعد سيقان اللوبياء وتقويم كفاءة Azotobacter rvinelandii في مكافحة المرض تحت الظروف المختبرية

Loading...
Loading...
الخلاصة

This research was carried out to isolate and identify the causal agent of root and stalk rot of cowpea in some governorate in central of Iraq,test the pathogenicity for the fungus and control it by using three isolates of the bacterium Azotobacter vinellandii. Results showed existance of Rhizoctonia solani in all samples at 15.75-35.00%. The fungus was identified as R. solani according to cultural and morphological characteristics. Pathogenic ability of R. solani by using cabbage seeds indicated that all the test isolate, were pathogenic, and showed different effects on cabbage seed germination. The percentage of seed germination in their treatments ranged between 0 to 54.66%, with the superiority of the two isolates, RS1 and RS4 which completely inhibited cabbage seed germination compared with control treatment which was 80%. The pathogenicity also showed that the isolates RS1, RS2, RS3 and RS4 were pathogenic to cowpea, they caused reduction in seed germination and increased in infection severity under glasshouse conditions. The percentage of seed germination and infection severity in their treatments ranged between 0 to 50% and 43.75 to 100% respectively compared with the 0.0 and 90% in the control treatment, with the superiority of RS1 which gave 100% infection severity and completely inhibited seed germination. Three pure isolates of A. vinelandii bacterium AV1, AV2 and AV3 caused significant reduction in the mean fungal growth of the two pathogenic isolates of R. solani (CRS1 and RS4) and increased percentage of inhibition. The mean of fungal growth and percentage of the inhibition in the treatments of bacterium isolates ranged 1.75-2.82 cm and 68.88-80.56% respectively compared with 9.00 cm and 0.00 % in the pathogenic fungal isolates without biocontrol agent.

الكلمات الدلالية


Article
ISOLATION OF SOME FUNGI CONTAMINATED IRRIGATION WATER IN THE COLLEGE OF AGRICULTURE/ UNIVERSITY OF BAGHDAD
عزل لبعض الفطريات الملوثة لمياه الري في كلية الزراعة / جامعة بغداد

Loading...
Loading...
الخلاصة

This study was conducted from December through May (2010-2011), to study the contaminants inherent for irrigation water in the fields of college of Agriculture in University of Baghdad. Two hundred and eighty one fungal isolates were isolated from the wells, Abu Ghraib river and the sewage water in the collegel of Agriculture which belonging to 16 genera, 13 of them belong to fungi imperfacti and one to either of Zygomycetes and Oomycetes and one to the sterile fungus. The experimental results showed that Pythium, Aspergillus, Rhizoctonia, Rhizopus, Fusarium were found mostly throughout all the months. The months results were all most same In the Percentage rate of the frequency of fungi, its was (99.96 –100) fungaI Isolation with anaverge of 6.247-6.25 % and the following fungi were found: Pythium, Aspergillu,s Rhizoctonia, in the water of the source studied, while Penicillium and Diplococcium in the water taken from the wells near the Dean office and the central Library, the plastic houses and Abu Ghraib river. Alternaria and Fusarium were found in the water taken from the wells near the Dean office, the central Library and from Abu Ghraib river, while Candida fungi was found in water taken from central Library wells and Macrophoma fungus was found in the water taken from the well near the Dean office, while Cladosporium was found in the water taken from the wells near the Dean office, the central Library and also in the sewage water. The Rhizopus was found in the water taken from all the College wells except the well near the plastic houses. Ulocladium fungus was found in the water taken from the wells near the Dean office and the plastic houses and Abu Ghraib river, while Thielaviopsis was found in the water taken from the wells near the Dean office and Abu Ghraib river, while the sterile fungus was found in the water taken from the wells near the Dean office and the plastic houses. This study showed that using seeds trap wae the best method of fungi isolation more than the direct method of isolation and both of them get the following percentage of fungus 11.17 and 8.53 % respectively.

الكلمات الدلالية


Article
INHIBITORY EFFECTS OF SACCHAROMYCES CEREVESIAE AND KLUYVEROMYCES MARXIANUS AGAINST RHIZOCTONIA SOLANI CAUSATIVE AGENTS OF SEED ROT AND SEEDLING DAMPING OFF DISEASE IN TOMATO
الكفاءة التثبيطية للخميرتين SACCHAROMYCES CEREVISIAE وKLUYVEROMYCES MARXIANUS ضد الفطر RHIZOCTONIA SOLANI المسبب لمرض تعفن البذور وموت البادرات في الطماطة

Loading...
Loading...
الخلاصة

The research was conducted to evaluate the efficacy of Saccharomyces cerevesiae and Kluyveromyces marxianus against Rhizoctonia solani, the causal agents of seedling damping–off in tomato, in culture media and in pots under greenhouse conditions . S. cerevesiae at 1; 2; 3; 4 and 5 g/L and one ml of K. marxianus suspention at 3×106 cell/ml were added to the potato dextrose agar (PDA) media in petridishes. Each petridish was then inoculated with a disk of 0.5 cm from new culture of R. solani. Yeasts treated soil were inoculated with R. solani inoculum at 0.5 % (g/g) and cultivated with tomato seeds. Yeasts treated seeds were cultivated in R. solani contaminated soil. The biological activity of S. cerevesiae and K. marxianus against R. solani were found to be 35.68 and 31.3% respectively in culture media after 3 days of incubation at 25 oc + 2. The inhibition percentage of R. solani were 85 ; 86.66 ; 86.66 ; 87.77 and 87.77% at 1; 2; 3; 4 and 5 g/L of S. cerevesiae respectively. The addition of K. marxianus suspension to PDA at 3×106 cell / ml was completely inhibited R. solani growth. The filtrates of S. cerevesiae and K. marxianus reduced the dry biomass weight of R. solani to 0.0491 and 0.0520 g respectively compared with 0.1101 g in control. Seed and soil treatment with K. marxianus suspension at 3 x 106 and 2 x 104 cell / ml respectively, showed higher effect than other treatments in reducing dampin –off of tomato seedling, attained to 3.3 and 0.0% compared with 63.33 and 0.0% respectively under greenhouse conditions. This reduction in disease incidence was accompanied with increasing of peroxidase activity.

الكلمات الدلالية


Article
DETECTION OF FUSARIUM GRAMINEARIUM IN MAIZE SEEDS AND DETERMENATION OF ISOLATES PRODUCED TOXIN AND EVALUATING THE ACTIVITY OF SOME COMPOUNDS AGAINST THE FUNGUS ON CULTURAL MEDIA
الكشف عن الفطر Fusarium graminearium في حبوب الذرة الصفراء وتحديد عزلاته المنتجة للسم وأختبار فاعلية بعض المركبات في تثبيطه على الوسط الزرعي

Loading...
Loading...
الخلاصة

This study was conducted to delect the fungus Fusarium graminearum in corn cereals, the capacity of fungus isolalis to product zeralenon mycotoxion, and the activity of some compounds against fungal growth on culture media. Samples of corn seeds from; Babel, Baghdad, Nineue, and Waseete governorate were collected. The cereals were surface sterilized in sodium hypochlite with sterilized distilled water. The cereal were dried on filter paper and distributed on potato sucrose Agar (PSA) medium in petriduhes of 9 cm diameter (10 seed / plate). The petridishes were incubated at 25 ± 2ºc for 5 days the fungi grow were identified to the genus. Results showed the presence of Fusarium graminearium with many other fungi including, Mucor spp. Alternaria spp. Penicillium spp. Aspergillus niger, A. flavus, Penicillium spp. Rhizoctonia spp. Trichoderma spp. assouatid with corn cereal. It was found that 9 of 13 isolatis of F. graminearum produced zeralenone mycotoxin. The addition of urea at 5 %, Fylax at 0.16 % to the cultural medium inhibited completely the fungal growth (100 % inhibition) . The magnetic and normal water caused an inhibition of 30.1 and 10.8 % to fungal growth respectively. No effect on the fungal growth was observed by activated bentonit to, kaolenite and Sacchromyas cerevistae powder extract.

الكلمات الدلالية


Article
BIOLOGICAL CONTROL OF POST HARVEST APPLE FRUIT ROT BY PSEUDOMONAS SYRINGAE
المكافحة الاحيائية لتعفن ثمار التفاح بعد الجني باستخدام البكتيريا PSEUDOMONAS SYRINGAE

Loading...
Loading...
الخلاصة

This study was carried out to isolate effective local microorganisms against apple fruit rot fungi. Two hundred and fifteen isolates of bacteria and yeasts were isolated from soil under apple trees, leaf and fruit surfaces from different apple orchids in Baghdad. Six of these isolates only were antagonistic to Rhizopus stolonifer and Penicillium sp., the causal agents of apple fruit rot on PDA and NYDA culture media. The most promising isolate, BN-33 was from apple fruit Cv. Anna. This isolate was identified as Pseudomonas syringae according to morphological, cultural, the ability to produce flourcent die and growth on some differential culture media. The identification to species level was assisted by the Central Laboratory, Ministry of Health, Baghdad, Iraq. Isolate BN-33 was significantly (P=0.05) effective against R.stolonifer Penicilliun sp. with 80 and 51% fruit rot reduction, respectively. Different concentrations of autoclaved or bacterial filter sterilized culture filtrate of isolate BN-33 significantly (P=0.05) reduced spores germination of Pencillium sp. with 9.05–33.58 and 9.57–35.75% compared with 96.18 and 95.11% for control treatments, respectively. These treatments also significantly (P=0.05) caused reduction of spores germination tubes length with 4.68–34.7 and 4.3–32.68 µm compared with 52.63–49.88 µm for control treatments, respectively. Liquid culture of the bacterium containing living cells was more effective against spores germination and germ tubes growth. This treatment prevented spores germination of R. stolonifer at all test concentrations. Antagonism was more effective as the time of R. stolonifer inoculation was delayed. This was manifested by the prevention of infection for even 7 days when the pathogenic fungus was added 24 for hour after isolate BN-33.

الكلمات الدلالية


Article
EFFECT OF GROWTH RETARDANT CULTAR EFFECTS AGAINST OF BROAD BEAN ROOT ROT FUNGAL UNDER LATHHOUSE CONDITION
تأثير معيق النمو كلتار في فطريات تعفن جذور الباقلاء تحت ظروف الظلة الخشبية

Loading...
Loading...
الخلاصة

This study was carried out at College of Agriculture/University of Baghdad, to evaluate the activity of growth retardant cultar to protect of Broad bean (Vicia faba L.) against root rot fungi under lath canopy condition and determine its mechanism effect on both host and pathogen. Results showed that treating broad bean seeds with cultar at 25 mg/L confer a reasonable protection to the seeds against soil borne pathogens, Rhizoctonia solani, Fusarium solani, F. oxysporum, F. semitecum and combination of R solani, and F. solani. significant increasing of germination percentage and disease severity decreasing, as well as increasing of dry weights of both plant shoots and roots were achieved upon seed treat treatment with cultar compared with those from seeds contaminated with fungi alone. The germination percentage were found between 30-62.5% and disease severity between 26-39% on plants emerged from seeds treated with cultar compared to 22.5-57.5% on those emerged from seeds contaminated with fungi alone. The infection percentage of seeds socked in water was found to be 92.5 % and 85 % of those socked in cultar with disease severity between 37-56%. Cultar treatment induced significant increasing in shoots and roots dry weights compared with control (fungi alone). Anatomical studies of faba bean roots and stem treated with Cultar Showed an increase in thickness of epidermis and cell walls compared with untreated plants. Results also showed that the presence of pith in plant treated with cultar .Absence in untreated plants, as well as increase of xylem and phloem cells.

الكلمات الدلالية

جدول المحتويات السنة: المجلد: العدد: