Biotechnology Research Papers/Topics

Genetic Basis Of Striga Hermonthica (Del.) Benth Resistance In Wild Sorghum Accessions

ABSTRACT Striga weeds are root parasitic plants that affect production of food in sub-Saharan Africa. Striga genus includes species; Striga hermonthica, S. gesnerioides, S. aspera, S. asiatica and S. forbesii with S. hermonthica being the most widely spread in the semi-arid tropical African zones. The most effective Striga control strategy is to exploit natural resistance. Wild grasses contain a resistance mechanism that enables them to resist Striga infection resulting in low Striga quantity...

In Vitro Antibacterial Activities Of Dichloromethane: Methanol Extracts Of Fuerstia Africana, Polygala Sphenoptera And Centella Asiatica Against Selected Bacteria

ABSTRACT Bacterial infections are responsible for numerous deaths every year worldwide. On average, 80% of the African populations cannot afford conventional drugs. Moreover, many synthetic antibiotics are associated with side effects and progressive increase in antimicrobial resistance. Currently, there is growing interest in discovering new antibacterial agents from medicinal plants. About 60% of the population living in developing countries depends on herbal remedies for healthcare needs. ...

In Vitro Antibacterial And Antioxidant Activities Of Methanolic And Dichloromethanolic Seed Extracts Of Kenyan Annona Squamosalinn

ABSTRACT Enterobacterial constitute a large family of Gram-negative bacteria which reside in the intestines of the animals and can be pathogenic. Penicillins and fluoroquinolones have been used as antibiotics to combat enterobacterial infections. Challenges in treatment of enterobacterial infections with conventional drugs have led the physicians to opt for phyto products and other alternative medicine for treatment of enterobacterial infections. Heavy bacterial load leads to oxidative ...

Antidiabetic Activity And Safety Of Aloe Volkensii, Acacia Nilotica, Euclea Divinorum, Rhoicissus Tridentata, Cynanchum Viminale And Urtica Dioica In Mice

ABSTRACT Diabetes is increasingly affecting a growing number of patients and seriously reducing their quality of life. Use of conventional drugs in diabetes management is expensive, thus, unaffordable to most patients. Furthermore most of these conventional drugs are associated with undesirable side effects. Incorporation of herbal medicine into conventional healthcare system may significantly improve the overall management of Diabetes. Evaluation of efficacy and safety by scientific method i...

Antimicrobial Activity And Phytochemical Profiles Of Warburgia Ugandensis Sprague (Canellaceae) Extracts From Different Populations Across The Kenyan Rift Valley

ABSTRACT Warburgia ugandensis Sprague is a highly valued medicinal plant which is over-exploited for its medicinal use among many communities. Encroachment and fragmentation of the species habitat has led to a notable decrease in its population size and distribution to the level that warrant some conservation efforts. Moreover, information on diversity in its antimicrobial activity and phytochemical profiles is lacking. The aim of this study was to evaluate variations in antimicrobial activit...

Enhancement Of Resistance Against Colletotrichum Gloeosporioides In Cassava Over-Expressing Rice Thaumatin-Like Protein (Pr-5) Gene

ABSTRACT Cassava (Manihot esculenta Crantz), is an energy giving food and has a crucial role in many of the world‟s least developed countries by providing not only food but also economic security. However, its productivity has been hampered by constraints that reduce yields. One of the biotic constraints is cassava anthracnose disease (CAD) caused by pathogen Colletotrichum gloeosporioides, results into more than 30 per cent reduction of produce in the fields. The use of conventional method...

Phenotypic Characterization And Genetic Diversity Studies Of Selected Rice (Oryza Sativa L.) Populations Based On Aroma And Cooked Kernel Elongation

       ABSTRACT Rice (Oryza sativa L.) is the main staple food for more than half of the world’s population. Improving cooking and eating quality of rice is one of the important objectives of many plant breeding programs. Aroma and cooked kernel elongation are two critical parameters that determine the market value, cooking and eating qualities of rice. The objective of this study was to evaluate the phenotypic and genetic diversity of thirteen (13) Oryza sativa L. populations from Ke...

Biosorption Potentials Of Zea Mays Cob And Musa Paradisiaca Peels In The Treatment Of Waste Effluent From Paint Industry.

ABSTRACT Studies on the biosorption potentials of Zea mays cobs and Musa paradisiaca peels in the treatment of waste effluent from paint industry, was carried out. Standard laboratory procedures using 400 ml of the effluent were adopted to assess the values of Pb, Fe, Cland PO4, BOD and TDS at pH 6.7 and pH 10.0 before and after treatment of the effluent with 1g and 3g of pulverized corn cobs and plantain peels. Standard procedures were adopted for the phytochemical screening of the biosorbe...

Effects Of Selected Carrier Materials And Storage Temperatures On Survival, Viability And Efficacy Of Rhizobia Biofertilizers

ABSTRACT Biofertilizers offer commercially feasible and environmentally sound means for supplementing nutrient supply to crops. The basic problem in acquiring quality rhizobia biofertilizers is the low number of efficient cells. The major limitations affecting the quality of rhizobia biofertilizers are; short storage duration, unavailability of appropriate carrier materials, and susceptibility to high temperature. The present study evaluated the effects of selected carrier materials and stora...

Impact Of Phytoplasma Infection On Phytohormone Levels, Vascular Tissue Morphology And Phloem Mass Flow In Napier Grass

ABSTRACT The Napier grass stunt (NGS) phytoplasma is a phloem limited bacterium that is transmitted by insect vector, Maiestas banda (Hemiptera: Cicadellidae). The phytoplasma causes NGS disease in Napier grass resulting into huge forage yield losses hence impacting negatively the economy of smallholder dairy farmers in East Africa. Phytoplasma infections causes massive changes in phloem physiology including the sieve elements which may lead to reduced rate of phloem mass flow that interfere...

Variation In The Protein Level Of Different Accession Of Bambara Groundnut

ABSRACT Bambara groundnut (Vigna subterranean L.) is a protein rich legumes, with food security potential. The nine (9) accessions of the Bambara Groundnut were obtained from ational Centre for Genetic Resources and Biotechnology (I'TACGRAB) Ibadan, Oyo State Nigeria. These were accessed for their genetic and phylogenic relatedness through electrophoresis of the seed's proteins. Protein characterization with standard gel marker revealed that the 9 accessions contained proteins (Bovine Serum ...

Community Knowledge and Practices as Regards Malaria in Ilorin City: Implications for the Elimination Plan of the National Malaria Elimination Program

Abstract Objective: To examine malaria-related knowledge and practices among residents in Ilorin City to guide forthcoming malaria elimination action of the recently restructured Nigerian National Malaria Elimination Program. Methods: Community-wide cross-sectional study was conducted in June 2012 using pretested structured questionnaire and interview schedule to collect information on perception, prevention and treatment of malaria among the residents. Results: Majority of the respondents at...

An Assessment Of The Efficacy Of Selected Biopestides And Synthetic Chemicals In The Control Of The Corn Strain Of The Fall Armyworm.

ABSTRACT The fall armyworm is a devastating pest of maize which has recently reached the African continent. Currently, there are no registered insecticides for FAW control in African countries, except applications allowed through an emergency label, suggesting an urgent need for insecticide screening. A study was carried out at the Department of Research and Specialist Service to investigate the efficacy of selected biopesticides and synthetic chemicals against the fall armyworm. The laborato...

Identification And Antibiotic Susceptibility Patterns Of Urinary Tract Infections (Utis) In Patients Presenting At Zvishavane District Hospital

ABSRACT Urinary tract infections (UTIs) are the most common type of infections encountered in medical practice today. Effective treatment of these infections is being hindered by antibiotic resistance of UTI pathogens. Prevalence of UTIs differs with geographical location, seasons, and gender. Therefore, it is important to isolate and identify the uro-pathogens causing UTIs in an area and determine their antibiotic susceptibility patterns. In this study, a total of 92 mid-stream urine samples...

Cyanide levels, starch content and antioxidant composition of three cassava varieties (Benguela, Malawi 1 and Malawi 7)

ABSTRACT Cassava (Manihot esculenta) is a drought resistant crop that can potentially contribute to food security through diversification of the staple diet in Zimbabwe. A major hindrance to its adoption as a major food item is its perceived toxicity because it contains a cyanogenic glycoside, which can be hydrolyzed into hydrogen cyanide, HCN, and there is also lack of its nutritional benefits. A comparative study of three cassava varieties (Benguela, Malawi 1 and Malawi 7) grown in Zimbabwe...


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