ABSTRACT Five experiments were performed to investigate the polyembryonic expressions and karyomorphology of fluted pumpkin (Telfairia occidentalis Hook. F.). The results obtained revealed three morphotypes of polyembryony which included twin, triple and quadruple, irrespective of the shape of the pod. The three morphotypes had side shoots that varied in length. Some were unequal, a few of them were almost equal, and many had rudimentary side shoots, which subsequently degenerated with time. ...
TABLE OF CONTENTSDECLARATION iiAPPROVAL iiiDEDICATION ivAKNOWLEDGEMENTS vTABLE OF CONTENTS viLIST OF TABLES viiiLIST OF FIGURES viiiDEFINITION OF TERMS ixLIST OF ABBREVIATIONS xABSTRACT xiCHAPTER ONE 1INTRODUCTION 11 . I Background to the study 11.2 The study Area 2.3 Statement of the problem 41 .4 Objectives 4I .4. 1 General objective 51,4.2 Specific objectives 51 .5 Research questions 51.6 The scope of the study 51.7 The significance / Justification of the study 6CHAPTER TWO .7LITERATURE RE...
ABSTRACT Foot-and-mouth disease (FMD) is a severe highly contagious viral disease of clovenhoofed animals that has significant economic impacts. FMD causes significant economic loss in Namibia in which the molecular epidemiology of FMD virus (FMDV) responsible for the outbreaks has not been consistently studied. The general objective of this study was to determine molecular characteristics of FMD viruses of 2019 outbreak in Zambezi region, Namibia. A total of 11 epithelial tissue samples col...
Application of chemicals on weed has been an effective method of weed control. However, this is with problems of persistence and hazardous effects on non-target organisms like arthropods. Common herbicides used in maize fields in Ogbomoso include atrazine, primextra, Lasso/atrazine, diuron pendimethalin, and S-metolachlor. Information on S-metolachlor and Pendimethalin persistence under field situations is inadequate. Therefore, persistence of S-metolachlor and Pendimethalin in maize fiel...
Cowpea (Vigna unguiculata (L.) Walp) is one of the most economically and nutritionally important indigenous African grain legumes. It is cultivated in the tropics and sub-tropical regions in Asia and Oceania, the Middle East, southern Europe, Africa, southern USA, and Central and Southern America (Singh et al., 2002). It is an annual crop believed to have originated in Africa (Padulosi and Ng, 1997). Cowpea is well adapted to the dry savanna in the West African sub-region, where it is mo...
The Root-Knot Nematode (RKN), Meloidogyne incognita and fungus Botryodiplodia theobromae, are important pests that cause yield losses in cassava and other crops. Chemicals have been used to manage these pests but with undesirable side effects. Information on pathogenicity of M. incognita, its interaction with B. theobromae and its biocontrol in Nigeria is very little. Therefore, pathogenicity of M. incognita on cassava, its interaction with B. theobromae and management with biocontrol ag...
Maize (Zea mays L) is the third most important cereal crop in the tropics (CIMMYT, 2004). It is an important grain crop in the world due to its ability to produce economic yields under the marginal production conditions of low soil fertility and management (FAO, 2005). Total world production of maize in 2011 was estimated at 817,110,509 MT. Nigeria‘s share of the production is 9, 180, 270 MT (FAOSTAT, 2011). It is a food crop of economic significance and nutritional importance in the ...
SUMMARY Bloodsmear microscopy is currently the gold standard and the principal test for confirmatory diagnosis of malaria. However, microscopy is labour-intensive and is limited by inadequate sensitivity and specificity. Apart from microscopy, rapid diagnostic tests (RDTs), which include the quantitative buffy coat test (QBC) and the immuno-chromatographic tests (ICTs) are alternative tests for confirmatory diagnosis of malaria. RDTs, particularly, ICTs are fast gaining momentum as altern...
ABSTRACT The potentials of Moringa oleifera seeds and Aluminium Sulphate as coagulants for the treatment of water samples from Usuma River Abuja was carried out. The physicochemical parameters investigated were the Turbidity (in NTU), Total Dissolved Solids (in mg/l), Conductivity (in μS), and Salinity (in ppm). For the water treatment with Alum, the standard municipal water treatment dosing of 360 mg/l was used. For the treatment with the natural coagulant, there was need to determine t...