Research Papers/Topics in Botany

Some Aspects of Water Relations of two Mahogany Species

ABSTRACT The general distribution, growth form and economic importance of Kha%a senega!sir (Bear) A. Juss. and Khaya ivorensis A. Chev. are described. Some aspects of the water relations of seedlings of these two species, the former a savanna species and the latter a forest species were studied with the view of ascertaining whether moisture plays an important role in determining the pattern of their distribution. &rowth of seedlings under four soil watering regimes namely - -0.3 (A), -0,4 (B...

Comparative Bioconversion of Rice Lignocellulosic Waste and Its Amendments by Two Oyster Mushrooms (Pleurotus Species) And The Use of the Spent Mushroom Compost as Bio-Fertilizer for The Cult

ABSTRACT Oyster mushrooms (Pleurotus species) have been an important food item in both developed and developing countries serving an invaluable resource for nutrition, health and disease prevention. Although several agricultural wastes lignocellulose have been used for cultivation of oyster mushrooms worldwide and in Ghana, the most utilized is the wawa (Triplochiton scleroxylon) sawdust and its amendments for the cultivation of Pleurotus ostreatus in Ghana. However, a longer period of 28 da...

Ethnobotanical Study on Wealth of Homegardens in Gosiling Gewog of Tsirang District

Aim: To document the medicinal uses of homegarden plants by local healers. Study Design: Semi-structured interview was conducted with the prior approval from the gewog official. Five local healers were contacted for interview before field visits based on their popularity and experience of using medicinal plants in their locality. Place and Duration of Study: The study was conducted at Gosiling gewog, Tsirang District, Bhutan between May and June 2016. The homegarden and agricultural ...

MODELLING OF HEAVY METAL BIOACCUMULATION OF Eichhornia crassipes [MART.] SOLMS AND Pistia stratiotes L. IN OLOGE LAGOON, LAGOS, NIGERIA

ABSTRACT Macrophytes such as Eichhornia crassipes and Pistia stratiotes are known bioaccumulators found in the Ologe Lagoon which receives effluents mainly from Agbara Industrial Estate.  However, the mechanism of heavy metal bioaccumulation by these macrophytes has not been fully understood. This study was designed to determine the mechanism of heavy metal bioaccumulation and model the phytoremediation capabilities of the macrophytes.  Five sampling stations: Owo (befo...

Ecological Utilization Of The Weed – Tithonia Diversifolia And Sustainability Of The Paper Industry In Nigeria

Abstract Tithonia diversifolia is found growing abundantly within the forest zone of Nigeria. The evaluation of the pulp and paper making properties of T. diverisifolia showed average fibre length, width, wall thickness and lumen of 827.66  186.40m, 20.29  3.92 m, 3.96  0.28 m and 12.16  3.96 m respectively.  This short fibre length and small wall thickness of T. diversifolia made it unsuitable for making strong papers.  However, it is goo...

Evaluation Of Rhizobium And Mycorrhiza Interactions In Sustainable Maize(Zea Maysl.)And Soyabean(Glycine Maxl.) Production

ABSTRACT Maize and soyabean are among the staples in the world. Their sustainable production through the use of synthetic fertilizer causes soil degradation and ground water contamination. An alternative means of boosting and sustaining the production of these staples through the use of rhizobium and mycorrhiza have been reported but there are contradictory reports on interactions between the two organisms. Therefore, the objective of this study was to assess the influence ofRhizobi...

Systematics Of Psilocaulon N. E. Br. (Aizoaceae)

ABSTRACTOn the basisl of herbarium, living and pickled materialthe morphology and systematics of Psilocaulon N. E. Brownsensu Ihlenfeldt ~ Bittrich is investigated. Thirteen species{including one insufficiently known species) are recognized:' P. articulatum, PI· bicorne, P. coriarium, P. dimorphum, P.dinteri, P. foliosum, P. gessertianum, P. granulicaule, P.junceum, P. leptafthron, P. parviflorum, P. sal.icornioides, P.subnodosum. Species of Mesembryanthemum, Prenia, Brownanthus,As...

A study ori some of the physiological and ultrastructural changes occurring on desiccation and rehydration of Myrothamnus fiabellifolia

ABSTRACTSome of the physiological and ultrastructural changes occurring during thedehydration and rehydration of the "resurrection" plant Myrothamnusflabellifolia were investigated. The changes in stem and leaf orientationthrough angles greater than 45 degrees were recorded, and these changes,along with the change in adaxial leaf surface pigmentation, may serve tolimit bright-light and/or thermal damage to these plants. M flabellifoliaretained more than 70% total chlorophyll content,...

The Effect of Smoke Treatment on the Germination on Four Species of Mesembryanthemum :Some Preliminary Observations

The Effect of Smoke Treatment on the Germination on Four Species of Mesembryanthemum :Some Preliminary Observations

Studies on the Ecology and Production of Seaweeds of Economic and Potential Economic Importance on the Namibian Coast.

ABSTRACTThe seaweeds of the Namibian coast have received little attention from researchersdespite the fact that there is a successful industry based on seaweed exploitation. Beachcast Graci/aria verrucosa (Hudson) Papenfuss is collected (9000-15000 t (wet) y-1) inthe Luderitz area for the production of agar, Laminaria schinzii Foslie was harvestedfor a short period from April 1987 to March 1989 and there is an increasing interest inutilizing other seaweed species on the coast.The nat...

A I4C And ISN Study Of The Effects Of Ammonium Or Nitrate Nutrition On Carbon Allocation In Triticum Aestivum L. And • Zea Mays L.

ABSTRACTThe poor response of some plant species, e.g. wheat, to ammonium nutrition has beenattributed to a diversion of carbon allocation from structural material for root extension to functionsassociated with the assimilation and translocation of ammonium in the root. The aim of this researchwas to investigate carbon allocation in response to ammonium or nitrate nutrition in wheat, anammonium intolerant species, and maize, which exhibits ammonium tolerance. Experiments were ·carried ou...

Vortices Of The Mozambique Ridge Current

AbstractThe seed that eventually gave birth to this thesis was planted inAugust, 1975 when, during a cruise of the Research Vessel Meiring Naudethe existence of deep-sea cyclonic vortices in the South Western IndianOcean was discovered. Little was it realised during that small, fortuitousbeginning in 1975 that the study would develop into the first detailedphysical oceanographic investigation of the Mozambique Ridge and adjacentMozambique Basin areas. It could also not be foreseen that...

A Study Of The Effects Of Nitrate, Ammonium, And Nitrate + Ammonium Nutrition On Nitrogen Assimilation In Zeamays L.

Abstract.A brief review of the literature on the effects of nitrate and ammonium nitrogen sources on plant growth, and theassimilation of those nitrogen sources, has been presented.A water culture technique for the growth of maize wasdeveloped. The use of a gravel rooting medium with nutrientsrecycling through the rooting medium, and an iron supplement inthe form of ferric citrate, resulted in superior growth ofnitrate-fed plants in comparison to that observed with ahydroponic growth ...

Plant traits and drought tolerance in the Savanna: A Kruger National Park case study

AbstractOne of the central goals of plant ecology is to understand the factors that control the localdistribution of plant species and thus the composition of communities. The aim of this study is todetermine plant functional traits that can be associated with drought tolerance/avoidance and totest whether wood density is a good indicator of drought tolerance. The study was carried out inKruger National Park in the month of June. A number of plant traits including wood density, leafthick...

Physico-chemical factors influencing the spatial and temporal distribution of the seagrass. Zostera capensis. in Langebaan Lagoon

AbstractSeagrass meadows have important ecological roles in coastal ecosystems and provide high-valueecosystems services compared to other marine and terrestrial habitats. Despite this, there isgrowing evidence that this key ecosystems is declining on a global scale. Much of these declineshave been attributed to the effects of human alterations of marine habitats. Continued destructiveactivities, in both South Africa and elsewhere, if not managed properly will result in the demise ofseag...


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