Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.262083
Ten isolates of Bacillus megaterium bacteriophages were isolated from a soil sample collected from the Experimental Farm of Faculty of Agric. Minia University. The isolated phages produced single plaques circular in shape, clear in appearance and their diameters ranged from 1 to 3 mm. The isolated bacteriophages were tolerant to pH 4 upto 12. pH 8 was the optimal for the isolated phages. The thermal inactivation point of six phages (Nos. 1,3,4,7, 8 and 9) was 85°C. Whereas, phages Nos. 2,5, 6 and 10 displayed different thermal inactivation point (95°C). Therefore, the ten phages were classified to two groups. Group (A) contained phages Nos. 1,3,4,7, 8 and 9 and group (B) included phages Nos. 2,5, 6 and 10. Sensitivity of phage isolates to U.V. radiation was studied. Phages of group (A) lost their infectivities after exposure for 60 min to U.V., whereas, phages of group (B) inactivated after 40 min. The host range of phages of each group was the same. The electron micrographs of the phages indicated that phages of each group were identical in sizes and morphologies. Therefore, the phages of each group were belonging to one phage type. i.e. the phages of group (A) were one phage type and designated Bm1 and phages of group (B) were another type and designated Bm2.
{"title":"BACTERIOPHAGES SPECIFIC TO A PHOSPHATE DISSOLVING BACTERIUM (BACILLUS MEGATERIUM) I- ISOLATION AND CHARACTERIZATION OF BACTERIOPHAGES","authors":"","doi":"10.21608/mjard.2022.262083","DOIUrl":"https://doi.org/10.21608/mjard.2022.262083","url":null,"abstract":"Ten isolates of Bacillus megaterium bacteriophages were isolated from a soil sample collected from the Experimental Farm of Faculty of Agric. Minia University. The isolated phages produced single plaques circular in shape, clear in appearance and their diameters ranged from 1 to 3 mm. The isolated bacteriophages were tolerant to pH 4 upto 12. pH 8 was the optimal for the isolated phages. The thermal inactivation point of six phages (Nos. 1,3,4,7, 8 and 9) was 85°C. Whereas, phages Nos. 2,5, 6 and 10 displayed different thermal inactivation point (95°C). Therefore, the ten phages were classified to two groups. Group (A) contained phages Nos. 1,3,4,7, 8 and 9 and group (B) included phages Nos. 2,5, 6 and 10. Sensitivity of phage isolates to U.V. radiation was studied. Phages of group (A) lost their infectivities after exposure for 60 min to U.V., whereas, phages of group (B) inactivated after 40 min. The host range of phages of each group was the same. The electron micrographs of the phages indicated that phages of each group were identical in sizes and morphologies. Therefore, the phages of each group were belonging to one phage type. i.e. the phages of group (A) were one phage type and designated Bm1 and phages of group (B) were another type and designated Bm2.","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"8 Suppl 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89087655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.273249
{"title":"IMPACT OF PLANT GROWTH PROMOTING MICROORGANISMS AS A BIOFERTILIZER ON ENZYMES ACTIVITY AND VEGETATIVE CRITERIA OF TOMATO CROP","authors":"","doi":"10.21608/mjard.2022.273249","DOIUrl":"https://doi.org/10.21608/mjard.2022.273249","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90748720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.267035
{"title":"EVALUATING THE EFFECTIVENESS OF DIFFERENT CHEMICALS IN TREATING NOSEMA SSP HONEYBEE (APIS MELLIFERA) COLONIES UNDER ASWAN REGION CONDITIONS","authors":"","doi":"10.21608/mjard.2022.267035","DOIUrl":"https://doi.org/10.21608/mjard.2022.267035","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88954698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.273780
{"title":"BACTERIOPHAGES SPECIFIC TO A PHOSPHATE DISSOLVING BACTERIUM (BACILLUS MEGATERIUM) II- PROTECTION OF B. MEGATERIUM AGAINST PHAGE ATTACK.","authors":"","doi":"10.21608/mjard.2022.273780","DOIUrl":"https://doi.org/10.21608/mjard.2022.273780","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79123224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.283361
{"title":"AN ECONOMIC STUDY OF THE IMPACT OF CLIMATE CHANGE ON THE PRODUCTIVITY OF THE MOST IMPORTANT STRATEGIC CROPS IN EGYPTIAN AGRICULTURE","authors":"","doi":"10.21608/mjard.2022.283361","DOIUrl":"https://doi.org/10.21608/mjard.2022.283361","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88626420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.280375
{"title":"USE OF HONEYBEE PRODUCTS FOR MANAGING ROOT-KNOT NEMATODE IN TOMATO CROP AND THEIR EFFECT ON SOIL HEALTH AND GROWTH PLANT PARAMETERS","authors":"","doi":"10.21608/mjard.2022.280375","DOIUrl":"https://doi.org/10.21608/mjard.2022.280375","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81634007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.278019
{"title":"THE INFLUENCE OF FERTILIZATION SYSTEMS AND SOME WEED CONTROL TREATMENTS ON THE YIELD AND QUALITY OF SUGAR BEET AND ASSOCIATED WEEDS.","authors":"","doi":"10.21608/mjard.2022.278019","DOIUrl":"https://doi.org/10.21608/mjard.2022.278019","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90484025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.286731
{"title":"EVALUATING THE EFFECT OF A COMBINATION OF BLACKBERRY AND STRAWBERRY JUICES ON STZ-INDUCED OXIDATIVE STRESS OF DIABETIC RATS","authors":"","doi":"10.21608/mjard.2022.286731","DOIUrl":"https://doi.org/10.21608/mjard.2022.286731","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74786862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.268639
{"title":"RELATIONSHIP BETWEEN HONEYBEE COMBS AGE AND THE PERCENTAGE DAMAGE BY GREATER WAX MOTH (GALLERIA MELLONELLA, LEPIDOPTERA: PYRALIDAE) WITH SPECIAL REFERENCE TO ITS SEASONAL ACTIVITY UNDER MINIA REGION CONDITIONS, EGYPT","authors":"","doi":"10.21608/mjard.2022.268639","DOIUrl":"https://doi.org/10.21608/mjard.2022.268639","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"107 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79323703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.21608/mjard.2022.267036
{"title":"EFFECT OF PHOSPHATE FERTILIZER SOURCES AS WELL AS PHOSPHATE DISSOLVINGMICROORGANISMS IN RHIZOSPHERE MICROFLORAAND PLANT GROWTH OF MAIZE PLANT.","authors":"","doi":"10.21608/mjard.2022.267036","DOIUrl":"https://doi.org/10.21608/mjard.2022.267036","url":null,"abstract":"","PeriodicalId":18575,"journal":{"name":"Minia Journal of Agricultural Research and Development","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83204570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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