Species composition, diversity and distribution in a disturbed Takamanda Rainforest, South West, Cameroon
December 2013
This study assessed the diversity and distribution of trees and shrubs in a 16 ha disturbed plot in the Takamanda Rainforest. Linear transects (8) were laid in the field which radiated from the centre of the plot. The girth of the trees and shrubs were measured and species identified. A total of 99 species (72 trees and 27 shrubs) belonging to 87 genera and 34 families were recorded. Caesalpinaceae was the most...
Effect of salt stress on osmolyte accumulation in two groundnut cultivars (Arachis hypogaea L.) with contrasting salt tolerance
December 2013
The effects of salt stress on the level of osmolyte accumulation in two different cultivars (K-134 and JL-24) of groundnut seedlings were studied. Seeds were grown at different concentrations of NaCl stress: 50, 100 and 150 mM and their respective controls (0.0% NaCl) for nine days. Salt stress resulted in a significant modification in the level of osmolyte accumulation in the two cultivars of groundnut. The...
The effects of pH and growing medium type on the susceptibility of Moringa oleifera to fungal diseases during seedling emergence
December 2013
Moringa oleifera seed germinates poorly and most seedlings die during early establishment. To solve this problem, the effects of pH and growing medium type on the susceptibility of M. oleifera to fungal diseases during seed emergence and early seedling establishment were evaluated in a 3 x 6 factorial experiment arranged as a randomized complete block design with three replications in a greenhouse experiment. Six...
Knowledge on cassava disease management: The case of cassava brown streak disease awareness in Northern Uganda
December 2013
The cassava brown streak disease (CBSD) has spread rapidly in Northern Uganda since its emergence in Uganda in 2005. Field surveys conducted in 2010 and 2011 by Ngetta Zonal Agricultural Research and Development Institute (Ngetta ZARDI) revealed high CBSD prevalence in the zone. CBSD epidemic has severely affected livelihood of smallholder farmers in the region. Lack of knowledge on disease recognition and management...
Pollen morphology of seven wild species of Acacia in Saudi Arabia
December 2013
Pollen micromorphological characters such as pollen size, shape, number of associated monads, colpi and ornamentation of the tectum surface, of seven species of Acacia belonging to the family Mimosaceae were studied, using light microscope (LM) and scanning electron microscope (SEM). The study showed that the pollen size range from 42.1 to 69.4 µm, pollen shape is round to semi- round, the number of associated...
Petiole anatomy of some species of Asteraceae in southwest Nigeria
December 2013
Petiole anatomy of 12 species of Asteraceae around Ile-Ife in South-Western Nigeria was described. Transverse section of the petiole (median) was cut at 20 µ using Reichert Sledge Microtome. The specimens were stained in 1% aqueous solution of Safranin O for 5 min, washed in three changes of water to remove excess stain and counterstained in 1% solution of Alcian blue for 5 min, and cleared in xylene. The section...
Effect of intra-row spacing on yield and quality of some onion varieties (Allium cepa L.) at Aksum, Northern Ethiopia
December 2013
Lack of improved varieties and production practices have been the major bottlenecks of onion production and productivity in Tigray, particularly at Aksum area. There have been no recommended intra-row spacing and variety for that area specifically; rather farmers used to practice non-uniform plant spacing. Thus, a field experiment was conducted to investigate the influence of intra-row spacing, variety and their...
Scope of medicinal flora as effective anti ulcer agents
November 2013
Gastric ulcer generally results from persistent erosions and damage of the stomach wall which become perforated and develops into peritonitis and massive haemorrhage as a result of inhibition of the synthesis of mucus, bicarbonate and prostaglandins. The commercially available antiulcer drugs usually have various side effects. Due to these side effects, there is a need to find new antiulcerogenic compound(s) with...
Studies on floral phenology, fruit and seed maturation and harvest index based on fruit colour in Pongamia pinnata (L.) Pierre
November 2013
Pongamia pinnata is a leguminous tree having enormous potential of producing high seed oil that could be as a source of biofuel. The collection of pods with higher seed quality characters is much important for production of elite seedlings at nursery and hence studies related to seed maturation were initiated as matured seed is the basic character of quality seed. To evaluate the steps in obtaining quality seed...
In vitro antifungal effects of the essential oil of Mentha piperita L. and its comparison with synthetic menthol on Aspergillus niger
November 2013
The antifungal activity of Mentha piperita L. essential oil and its comparison with synthetic menthol on Aspergillus niger growth have been determined in vitro. The chemical compositions of essential oil of M. piperita provided from the aerial parts of plants grown in a village in Kerman Province in June 2012 were determined. The sample was cleaned and...
Yield and quality of statice [Limonium sinuatum (L.) Mill.] as affected by cultivars and planting densities
November 2013
A study was conducted in a plastic greenhouse at Freesia Ethiopia PLC Sululta located in the central highlands of Ethiopia with the objective of determining the effect of cultivar, planting density and their interaction effect with reference to yield and quality of Statice.The experiment was laid out in a 3 x 4 factorial arrangement using a Randomized Complete Block Design (RCBD) with three replications. The...
Chromosome numbers and karyotype in three species of the genus Vernonia Schreber in Southern Nigerian
November 2013
Detailed cytological studies were carried out on three species of the genus Vernonianamely Vernonia amygdalina (bitter leaf and non-bitter leaf), Vernonia cinerea andVernonia conferta to ascertain their chromosome number. The taxa studied showed diploid number of chromosome for V. cinerea (2n = 18) and V. conferta (2n = 20) and tetraploid number for V....
Earliness and yield parameters of eggplant (Solanum melongena L.) grafts under different spacing and fertigation levels
November 2013
Field study was undertaken to standardize spacing and fertigation levels for eggplant(Solanum melongena L.) grafts. A strip plot design was adopted with four spacing levels (1 × 1, 2 × 1, 1.5 × 1.5 and 0.6 × 0.6 m) and three fertigation levels: 75, 100 and 125% recommended dose of fertiliser (RDF) replicated four times. After six months, the plants were pruned to obtain the ratoon crop...
Study on malting barley genotypes under diverse Agroecologies of north western Ethiopia
November 2013
The study was conducted with the objectives to determine the magnitude effect of genotype, environment, and their interactions on economically important traits and identify stable malt barley (Hordeum distichon L.) genotypes. Combined analysis of variance indicated that the main effects due to environment, genotype and GxE interaction were highly significant for grain yield and economically important malting...
Evaluation of allelopathic potential of an aromatic exotic tree, Melaleuca leucadendron L.
November 2013
An attempt was made to evaluate the allelopathic potential of an exotic tree species,Melaleuca leucadendron L. using mung bean (Vigna radiata L.) seeds as responsive bioassay material. This was recorded in terms of the plant extract and plant leachate-induced changes of seed germination behaviour, the levels of DNA and RNA as well as amylase activity in the seed kernels. The results of the present...
Relationship between gibberellins and carbohydrates in vegetable products
October 2013
Gibberellin is a vegetable hormone widely used in agriculture and horticulture. The objective of this review was to show the relationship between gibberellins and carbohydrates in vegetable products. Thus, the study concludes that the involvement of substances may be related with the terminal stages of development of various plants. However, the interactions of carbohydrate content and gibberellin are still...
Medicinal orchids and their uses: Tissue culture a potential alternative for conservation
October 2013
Orchids are nature's most extravagant group of flowering plants distributed throughout the world from tropics to high alpine. They exhibit incredible range of diversity in size, shape and color of their flowers. Though orchids are grown primarily as ornamentals, many are used as herbal medicines, food, and other have cultural value by different cultures and tribes in different parts of the...
Sesbania sesban (L.) Merrill: Potential uses of an underutilized multipurpose tree in Ethiopia
October 2013
Sesbania sesban (L.) Merrill is the most productive multipurpose tree widely distributed in tropics and subtropics; and usually planted by smallholder farmers mostly for its fodder and soil improvement values. The objective of the present study was to review the various aspects (with emphasis on its importance) of S. sesban and generate comprehensive technical information for scholars who wish to study...
Antifungal activity of aerial parts as well as in vitro raised calli of the medicinal plant, Balanites aegyptiaca Del.
October 2013
The antifungal potential of an endangered medicinal plant, Balanites aegyptiaca Del. and its in vitro raised calli was evaluated by agar well diffusion method. The alcoholic extract of fruits of parent plant as well as its callus showed good antifungal activity against various pathogenic and opportunistic fungi. Minimum inhibitory concentrations (MIC) of the extracts were determined by broth...
Characterization of dekoko (Pisum sativum var. abyssinicum) accessions by qualitative traits in the highlands of Southern Tigray, Ethiopia
October 2013
Cultivated Pisum is dominated with Pisum sativum subgroup, but P. sativum var.abyssinicum (Dekoko) is a unique subgroup developed and cultivated in Ethiopia. The objectives of the study were the characterization of the accessions using three qualitative traits and understanding the genetic diversity of the crop. Twenty-four (24) accession/local collections of Dekoko collected from...
Direct regeneration of the medicinal herb Cucumis anguria L from shoot tip explants
October 2013
A protocol was developed by in vitro regeneration by shoot induction of Cucumis anguria, a plant used as medicine and vegetable belonging to the family Cucurbitaceae. High frequencies of multiple shoot regeneration were achieved from nodal explants on MS fortified with 2 mg/l 6-benzyl amino purine (BAP) and 0.5 mg/l indole acetic acid (IAA). Five to ten shoots per explant were obtained. The elongated...
Lactuca sativa mediated chitinase activity and resistance in pearl millet against Sclerospora graminicola
October 2013
Pearl millet seeds were treated with latex extracts (L1- 50 µl, L2- 100 µl and L3- 200 µl) ofAsclepias curassavica, Calotropis gigantea, Croton sp., Eucalyptus alba, Morus alba,Nerium odoratum, Lactuca sativa and Tridax procumbens were applied on pearl millet seeds for 3 and 6 h to evaluate their role in growth promotion and downy mildew resistance. Latex extracts of...
A review on Justicia adhatoda: A potential source of natural medicine
October 2013
It has been established that up to 25% of the drugs prescribed in conventional medicines are allied directly or indirectly to natural substances mostly of plant origin. Hence, during the last few decades there has been an increasing interest in the study of medicinal plants and their long-established use in different countries. However, today it is compulsory to afford scientific testimony as to whether it is reasonable...
The extraction and mass transfer process of soluble solids in Russian olive
September 2013
In this paper, through the research of mass transfer mechanism of the extraction process of soluble solids (SS) in Russian olive, the kinetic model of concentration change for the SS with the solvent multiple B (mL/g), extraction temperature T (K) and extraction time t (h) during extraction process was established for the first time. Russian olive extract concentration values (%) can be calculated in...
Short-term responses of shrub layer communities to dry season fires and tree thinning in semi-arid miombo woodlands of north-western Zimbabwe
September 2013
Short-term responses of shrub layer communities to dry season fires and tree-thinning were investigated in semi-arid miombo woodlands in North-western Zimbabwe. Fifty-four (54) plots, 50 x 50 m each, were demarcated at three miombo sites. Treatments applied were: no burn, no tree thinning; no burn, thinned; early burn, no thinning; early burn, thinned; late burn, no thinning; late burn, thinned. After three...
Anti-emetic activity of some members of the family, Euphorbiaceae of Lahore region
September 2013
The present investigation aimed to evaluate the anti-emetic activity of some members of the family Euphorbiaceae of Lahore region. The selected plants were Euphorbia prostrata, Euphorbia splendens, Euphorbia hirta, Euphorbia helioscopia, Ricinus communis, Jatropha integerrima, Putranjiva roxburghii and Phyllanthus emblica. Anti-emetic activity was carried out...
Testing of striga resistant composite maize varieties for response to two levels of nitrogen fertilizer up-take
September 2013
Trials were carried out using five composite maize varieties in a Striga lutea (Lour) endemic soil of Temidire-Eruwa, Oyo State, Nigeria, in 2004 and 2005. The composite maize varieties were tested under varied fertilizer types, nitrogen (N) concentrations and artificial striga infestation. The objective was to test these striga resistant maize varieties for yield and agronomic performance under the...
Variation of alkaloids in the Kenyan Zanthoxylum gilletii (De Wild Waterman)
September 2013
Zanthoxylum gilletii is an African indigenous deciduous tree which is important for its medicinal use in many communities to treat a wide range of ailments. This study was conducted to identify the alkaloids present in the bark, root and leaves of the Kenyan Z. gilletii. The plant materials were randomly sampled, dried at room temperature, powdered and subjected to thin layer chromatography (TLC), high...
Description and morphometric analysis of a novel species of Ophrys (Orchidaceae) from Hymettus, Greece
August 2013
An orchid from Mt. Hymettus in Athens, Greece was isolated and described as new in science. The plant, Ophrys dicipulus (sp. nova), a scolopaxoid orchid, morphologically related to the Ophrys heldreichii group was encountered in three distinct locations within an enclosed and previously uncharacterized area of 259000 m2 on the slopes of Mt. Hymettus. The study to...
Test modeling of the growth of self-fertilized embryos of Phaseolus vulgaris L. and Phaseolus coccineus L. genotypes
August 2013
Biologists usually rely on modelling tools as well as simulation to try to understand the behaviour of biological phenomena theories. In this research study, we focus on the development and study of mathematical models from environmental problems about genotypes of Phaseolus coccineus L. (NI16 and NI1108) and Phaseolus vulgaris L. (NI637 and X707). Interspecific crosses and...
Contribution of plant species in homestead farms, to food security and sustainability in Ebonyi state – South eastern Nigeria.
August 2013
A three Agricultural Zone (Abakaliki, Afikpo and Ohoazzara) exploratory survey of useful plant species in three compound farms in 12 communities in Ebonyi State of Nigeria was conducted to develop a plant species inventory study so as to assess the contribution of plant species in homestead farm to food security and stability in the State. A total of 156 different plant species including 63 woody plant...
The effect of pre-treatments on the germination and early seedlings growth of Acacia auriculiformis Cunn. Ex. Benth
August 2013
Acacia auriculiformis Cunn. Ex. Benth is a multipurpose wattle tree with diverse environmental and ecological significance. However, seeds dormancy and low germination percentage are problems for its use in agro-forestry practices. Investigations were carried out on the effect of pre - treatment on the germination and early seedlings growth of A. auriculiformis. Germination were observed in seeds...
Shoot growth behaviour of selected trees and shrub species along an altitudinal gradient in Kumaun Himalaya, India
August 2013
This paper reports on the shoot diameter and shoot elongation of common 10 trees and 9 shrubs species of 6 natural forests occurring between 350 to 2500 m in Kumaun Himalaya. The findings indicated that over 90% shoot elongation was accomplished prior to the commencement of rainy season in a majority of species. The average values of diameter increment were similar for canopy and subcanopy species...
Vegetation structure in summer of Tehsil Takht-e-Nasrati plains, district Karak, Pakistan
August 2013
Community structure is a key marker of long-term vegetation change in ecosystem. In the present investigation, 11 plant communities were recorded in plains area. The cluster analysis gives rise to 5 groups on the basis of important value and 4 groups on basis of soil. The vegetation changed with change of distance. As a whole in plains, the CZS community was developed. There were 6 tree, 7 shrub and 19 herb...
Characterization and selection of upland rice germplasm under low and high soil phosphorous (p) and nitrogen (n) environments
August 2013
A total of 389 accessions and a local cultivar Duorado precoce were evaluated in a simple 30 × 13 alpha lattice design with two replications under four experimental environments (N-P-, no N or P application; N-P+, P applied; N+P-, N applied and N+P+, both N and P applied) at the rate of 60 kg P and 90 kg N ha-1. Data was recorded on Days to heading, anthesis and maturity (days), P and N...
In vitro anthelminthic activities of four medicinal plants against Haemonchus contortus
August 2013
In vitro experiments were conducted to determine the anthelmintic effects of crude aqueous extracts of the leaves of Carissa spinarum and Azadrichta indica, fruits ofPhytolacca dodecandra and stem bark of Acacia tortilis on eggs and adults ofHaemonchus contortus using egg hatch assay and mortality of adult parasite. Extracts of the leaves of C....
Effect of water deficit on relationship between yield and physiological attributes of banana cultivars and hybrids
August 2013
This study examined the relationship between the yield reduction by chlorophyll stability index (CSI), membrane stability index (MSI) and relative water content (RWC). The field experiment was conducted at National Research Centre for banana to screen the banana cultivars and hybrids for water deficit tolerance and to elucidate information on growth attributes mechanism of banana cultivars and hybrids. Water...
Biosystematic relationships among Psathrostachys, Critesion and Hordelymus in Hordeinae (Poaceae) based on the anatomical characteristics of leaf blades
August 2013
The anatomical characteristics of leaf blades of the major species of Psathyrostachys,Critesion and Hordelymus in Hordeinae were examined, their similarities and differences on the leaf blades were summarized, and the taxonomic significance of leaf anatomical features among them also were discussed. Furthermore, according to the evolutionary trends of anatomical characteristics of three...
Determination and isolation of protein from different fractions of defatted groundnut oil cake
August 2013
Groundnut is the major oilseed in India. Groundnut has a high amount of protein (26%), and it is a good source of calcium, phosphorus, iron, zinc and boron. After extracting oil, the cake was only used as cattle feed or livestock, hence in the present study protein was isolated by different fractions of defatted groundnut oil cake because of its higher protein content. Sodium dodecyl sulphate polyacrylamide...
Vegetational structure and plant diversity relation in a sub-alpine region of Garhwal Himalaya, Uttarakhnad India
August 2013
The present study investigated the community structure of a sub- alpine region of Mandal Valley (2200 to 3000 m) along the altitudinal gradient in Garhwal Himalay abased on analytic and synthetic characters. Poa annua was dominant and Potentilla fulgence wasco- dominant along the altitudinal gradient, indicating that most...
Genetic variability of three cassava traits across three locations in Ghana
July 2013
A study was conducted to assess the extent of genetic variability, broad-sense heritability and correlations for fresh root weight, root number and top weight of five cassava genotypes across three locations in 2 years. Combined analysis of variance revealed highly significant genotypic effect for all the traits. Genotype x environment interaction was also significant for all the traits studied indicating...
The folklore of medicinal plants recorded from Leepa Valley, Azad Jammu and Kashmir
July 2013
The folklore of 43 species of ‘medicinal plants’ belonging to 27 families was recorded form Leepa Valley, Muzaffarabad. Out of 43 medicinal plants, 4 gymnosperms, 38 angiosperms and 01 fern species were used against different diseases. The major problems cured by ‘medicinal plants’ were digestive problems (24 spp), dermal system problems (13 sp), hepatic problems (11 spp) and...
Identification of plants visited by the honeybee, Apis mellifera L. in the Sudan Savanna zone of northeastern Nigeria
July 2013
A total of 61 species of savanna plants visited by the honeybee, Apis mellifera L. were identified through direct observation of foraging bees. The time of flowering of the plants was also recorded. The largest number of species (26.2%) was recorded for the family Fabaceae. Combretaceae ranked second with 9.8% of the species, while Arecaceae, Lamiaceae, Poaceae Rhamnaceae and Rubiaceae ranked...
Plants used in material culture in Oromo community, Jimma, Southwest Oromia, Ethiopia
July 2013
Since antiquity, plants have been used as a source of material culture by the human societies. The purpose of this study was to assess the plant species and associated traditional knowledge used in making material cultures. A quantitative method (structured interviews and questionnaire) was used to collect data. A total of 75 key informants above 45 age groups were questioned and data on the plant...
Fatty acid composition and antibacterial activity of Swietenia Macrophylla king seed oil
July 2013
Pathogenic bacteria cause many acute and serious diseases, especially ‘multiple-drug-resistant’ strains have become such a problem due to overuse of antibiotics. Various medicinal plants are used to prevent or cure infectious diseases. The aims of this study were to determine the oil content, fatty acids compositions, and antibacterial activity ofSwietenia macrophylla king seed oil against...
The impact of drought stress on photosynthetic quantum yield in Haloxylon aphyllum and Haloxylon persicum
June 2013
The impact of periodic drought stress on photosynthesis changes was examined inHaloxylon aphyllum and Haloxylon persicum. Parameters F0, Fv/Fm, the chlorophyll content and chlorophyll a/b ratio were measured. Drought stress factor was consideredas lack of irrigation of potted-seedlings of two...
Influence of Acacia senegal varieties on quality of gum arabic in Baringo District, Kenya
June 2013
A study was done to determine the influence of Acacia senegal variety senegal and var.kerensis on quality of gum arabic in Solit, Kapkun, Kimorok and Maoi, Marigat division, Baringo District. Soil and gum arabic samples were collected, dried and analysed to establish their chemical characteristics. Gum nitrogen from A. senegal variety senegal in Kapkun and Solit was...
Conservation status of trees in Tehsil Takht-e-Nasratti, Karak Pakistan
June 2013
The present study documents the conservation status of 21 trees belonging to 14 families on small scale in Tehsil Takht-e-Nasrati, Karak through field surveys, frequently conducted in spring, summer and winter 2009-2010. Among these nine species were found to be rare, vulnerable (six species), infrequent (3 species), endangered (one specie) and dominant (two species). The conservation status of plants is determined...
Amelioration of aluminum toxicity on OM4900 rice seedlings by sodium silicate
June 2013
Silicon has versatile functions in plant biology, especially in plant defense and tolerance to both biotic and abiotic stressors. In this study, it was investigated if silicon could reduce the toxic effect of aluminum on rice. Aluminum was applied to OM4900 rice seedlings, and then their growth and sugar metabolism were determined. At doses of aluminum chloride of 100 and 200 µM, plant height was significantly...
Allometric prediction models of growth variables of Daniella oliveri in the Nigerian Guinea Savanna
June 2013
Trees show considerable variation and flexibility in their size of crowns, height, stem diameters, crown height and crown length. Stem diameter at breast height is an important tree characteristics and an accurate prediction of tree growth dimensions. Relationships between stem diameter and crown length with other variables of Daniella oliveri was studied. The result reveal positive correlations between...
Page 9 of 17, showing 50 records out of 807 total, starting on record 401, ending on 450
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