Comparative study on physicochemical variation for different samples of Cassia grandis Linn. leaves
July 2010
The present study is intended primarily to confirm changes with respect to quality of the drug. The variability in proper production unit, supply unit, methodology of collection and storage conditions were used to change the crude herbal drugs. The lack of knowledge of proper methodology, availability and more demands of herbal drugs for better treatment are promoting the practices of adulteration and...
Seed coating of safflower (Carthamus tinctorius L.) in order to delay germination
July 2010
The idea tested was the restriction of water uptake as a means of influencing the germination rate of the coated seed. This led to the choice of an acrylic plastic polymer to be used as coating material. Assembled spinning disc equipment was used for coating the seeds. The germination tests of the coated seeds were performed in Petri dishes in a randomized complete blocks design with five replications. With...
Chemical manipulation of tomato growth and associated biochemical implications on flavonoid, lycopene and mineral contents
June 2010
The consumption of tomato (Solanum lycopersicon) has been linked with reduced risk of chronic degenerative diseases. Therefore, this study was carried out to investigate the biochemical implications of bioregulator application on flavonoids, lycopene, calcium, magnesium, potassium, sodium, phosphorus and iron contents of tomato. Seeds of the tomato, genotype JM 94/47 were subjected to pre –germination...
Anatomy and morphology of Nicotiana glauca with regard to its crystals characterization
June 2010
Nicotiana glauca belongs to the Solanacese family of which Nicotiana tabacumand Nicotiana rustica are best known for their use as tobacco. N. glauca attains the greatest abundance and diversity in Central Argentina where it is considered native, and has been known as a weed in South Africa since the 19th Century. Extensive work on toxic effect of secondary metabolites extracted...
Changes in photosynthetic quantum yield of developing chloroplasts in lotus (Nelumbo nucifera Gaertn.) leaf during vegetative, bud and flowering stages
June 2010
Photosynthetic characteristics of the rotund or orbicular leaves of a monocarpic aquatic plant lotus (Nelumbo nucifera Gaertn.) leaves growing under direct sun light of tropics is studied and the developmental pattern of chloroplast along the foliage during vegetative, bud and flowering stages are studied by the measurement of the quantum efficiency of PS II photochemistry or photosynthetic quantum yield...
Ethno-botanical survey of the non-timber forest products in Sapele Local Government Area of Delta State, Nigeria
June 2010
An ethno-botanical survey of the non-timber forest products (NTFPs) in Sapele Local Government Area of Delta State, Nigeria was carried out in 2008 with a view to determining the usefulness of the resources to farmers in peasant subsistence. A total of 150 useful species of both plant and animal origins was recorded as having various applications in the lives of the rural dwellers in the area. The result...
Seasonal distribution of soil fungi and chemical properties of montane wet temperate forest types of Tamil Nadu
June 2010
Forty eight soil samples were collected from Wet evergreen forest of Tamil Nadu, Southern India; the fungi from these soil samples were isolated in (June – July) South West monsoon and (November – December) North East resting monsoon both seasons. About different species belongs to various groups viz; Ascomycotina, Zygomycotina and Deuteromycotina were identified with the help of relevant...
Essential oils analysis of the rhizomes of Alpinia conchigera Griff. and leaves of Alpinia malaccensis (Burm. f.) Roscoe from Bangladesh
June 2010
The essential oils obtained by hydrodistillation of the rhizomes of Alpinia conchigera Griff. and leaves of Alpinia malaccensis (Burm. f.) Roscoe were analysed by gas chromatography mass spectrometry (GC-MS). 74 compounds were identified in A. conchigera rhizome oil among them, 40 had not been detected previously. The major chemical class was terpenoids, with eucalyptol (25.85%),...
Antibacterial potential of crude leaf extracts of Eucalyptus camaldulensis against some pathogenic bacteria
June 2010
The antibacterial activity of the crude leaf extracts of Eucalyptus camaldulensis were determined using the agar well diffusion method against clinical isolates of Escherichia coli, Staphylococcus aureus, Salmonella typhi, Proteus mirabilis andKlebsiella pneumoniae. At an extract concentration of 50 mg/ml, the growths of all the pathogenic bacteria were arrested, though to...
Molecular genotyping of selected soybean (Glycine max L.) genotypes grown in different regions of East Africa
May 2010
Soybean (Glycine max (L.) Merril) is one of the most popular pulses because of its protein content and nodulating ability. However, most farmers and researchers do not have sufficient genetic information of the genotypes that they grow. This research aimed at determining the molecular characteristics of selected soybean genotypes grown in different regions of East Africa and make recommendations to the...
Dry matter yields and hydrological properties of three perennial grasses of a semi-arid environment in East Africa
May 2010
Enteropogon macrostachyus (Bush rye), Cenchrus ciliaris L. (African foxtail grass)and Eragrostis superba Peyr (Maasai love grass) are important perennial rangeland grasses in Kenya. They provide an important source of forage for domestic livestock and wild ungulates. These grasses have been used extensively to rehabilitate denuded patches in semi-arid environment of Kenya. This study...
Low intensity tapping systems applied to clone PR 107 of Hevea brasiliensis (Muell. Arg.): Results of 21 years of exploitation in South-eastern Côte d’Ivoire
May 2010
The cultivation of Hevea brasiliensis, which is the main source of natural rubber, is facing a problem of scarcity and/or high cost of skilled labour. One of the means to remedy this constraint is to reduce the intensity of tapping. This work aims at studying tapping systems of low intensity tapping but highly stimulated (S/4 d3 6d/7 8-10/y(m) and S/2 d6 6d/7 8-10/y(m)) which enable to reduce the need...
Phytotoxicity of uncomposted and composted poultry manure
May 2010
Different uncomposted and composted poultry manure types (laying hen and broiler), mixed at increasing rates (0, 25, 50, 75 and 100%) with two amended peat substrates, were tested to study the phytotoxicity using the cress (Lepidium sativum, L.) germination method. The results showed that composting generally reduced the phytotoxicity of the manure mixtures. The germination index was highest in both amended...
Isolation of potential antibacterial and antioxidant compounds from Acalypha indica and Ocimum basilicum
May 2010
In recent years multiple drug resistance has been developed in many microbes due to indiscriminate use of existing antimicrobial drugs in the treatment of infectious diseases. This paves the way for reconsidering traditional medicine; hence a study was carried out to explore the antimicrobial activities of the acetone and ethanol extract of Acalypha indica and Ocimum...
Study of pollen tube growth, cross-compatibility and fruit set in some almond genotypes
May 2010
Almond is one of the most important nut crops of Maragheh, Iran. In the present study, six Maragheh indigenous genotypes with favorable traits were selected for the investigations of pollen tube growth, fruit set and their compatibility. Genotypes were pollinated by the pollen of each other. Fruit set was studied in the filed, and pollen tube growth was studied in the laboratory with florescence microscopy....
Application of a satellite-based climate-variability impact index for crop yield forecasting in drought-stricken regions
April 2010
A quantitative index is applied to monitor crop growth and predict agricultural yield in drought-stricken regions. This Climate-Variability Impact Index (CVII), defined as the monthly contribution to overall anomalies in growth during a given year, is derived from 1 km MODIS Leaf Area Index. The CVII integrated over the growing season represents the percentage of the climatological production either gained or...
Assessment of physical properties of gum arabic from Acacia senegal varieties in Baringo District, Kenya
April 2010
A study was conducted to assess the physical properties of gum arabic obtained from two Acacia senegal varieties (var.senegal and var.kerensis). in Marigat division, Baringo district. Gum arabic samples from the experimental sites at Solit, Kapkun, Kimorok and Maoi were collected, dried and analysed to establish their physical characteristics. Moisture content in gum arabic obtained from...
Agronomic, economic and ecological aspects of the papaya (Carica papaya) production in Tabasco, Mexico
April 2010
The cultivation of papaya is important in the tropic because it provides source of income to the farmer within a short time. Statistical data were obtained from farmers located in the Chontalpa, Rios and Centro-Sierra regions; the size of the survey was 67 farmers. The study shows the results of the farmers’ problem in a drastic reduction of their productivity because of the virosis and low prices in...
Seed metrics for genetic and shape determinations in African yam bean [Fabaceae] (Sphenostylis stenocarpa Hochst. Ex. A. Rich) harms
April 2010
The metric measures on seeds, their correlation and relationship are important for systematic breeding for seed yield and shape determination. Variations among eighty genotypes of African yam bean (AYB) for six metric seed characters (seed length, width and thickness and their ratios) were evaluated in this study. Paired comparison among the six characters revealed very high significance (P < 0.001),...
Structure and composition of vegetation in subtropical forest of Kumaun Himalaya
April 2010
An extensive sampling was conducted for vegetational analysis in different forest sites between 1600 and 2600 m asl in Kumaun Himalaya. Quercus leucotrichophora A. Campus, Quercus floribunda Lindl. ex Rehder, Quercus semecarpifolia J. E. Smith and Pinus roxburghii Sarg. are the dominant tree species in Banj-oak, Tilonj-oak, Kharsu-oak and Chir-pine forests,...
Development of a lemon sorting system based on color and size
April 2010
Grading systems give us many kinds of information such as size, color, shape, defect, and internal quality. Among these color and size are the most important features for accurate classification and/or sorting of citrus such as oranges, lemons and tangerines. Basically, two inspection stages of the system can be identified: external fruit inspection and internal fruit inspection. The former task is...
Effects of Terralyt - Plus® on soil pH, nutrient uptake and dry matter yield of maize
March 2010
Acid soils are common in the tropics and managing them for sustainable cropping usually demands soil amendments. A greenhouse experiment was conducted at the Institute of Agricultural Research and Training, Ibadan, Nigeria to evaluate the effects of a soil amendment substance - organic biostimulator - Terralyt-Plus® on the growth, soil pH, nutrient uptake and dry matter production of maize. The soils...
Antimicrobial and antioxidant activities of essential oil and methanol extract of Jasminum sambac from Djibouti
March 2010
The essential oil was subjected to screening for their possible antioxidant activity by two complementary test systems, namely DPPH free radical scavenging and β-carotene-linoleic acid assays. Butylated hydroxytoluene (BHT) was used as positive control in both test systems. In the DPPH test system, the IC50 value of essential oil and methanol extract were respectively 7.43 and 2.30...
Morphometric study of the genus Senna Mill. in South-western Nigeria
March 2010
Thirteen quantitative characters of the leaves, fruits, seeds and flowers were used in the study of eight Senna Mill. species. The characters include leaflet length, leaflet width, leaflet length/width, Number of leaflets, lamina length, petiole length, pedicel length, petal length, fruit length, fruit width, fruit length/width, seed length and seed width. These characters were measured with the aid...
How fertilization affects yam (Dioscorea alata L.) growth and tuber yield across the years
March 2010
This study deals with the response of Dioscorea alata to NPK-Ca fertilization as affected by differences in weather conditions in two growing seasons. Experiments were conducted in the central Côte d’Ivoire in 2006 and 2007. The experimental design was a randomised complete block design with 4 replications. The dose of 160-10-180-110 kg ha-1 of NPK-Ca, respectively was compared to...
Degradation of fungal cell walls of phytopathogenic fungi by lytic enzyme of Streptomyces griseus
March 2010
In vitro tests of interactions between Streptomyces griseus strains and some soil-borne plant pathogens (Fusarium oxysporum, Alternaria alternate, Rhizoctonia solani and Fusarium solani) and 2 isolates of Aspergillus flavus were studied on PDA medium. Strains tested produced a metabolite that inhibited growth of plant pathogenic fungi on PDA medium (dual culture...
S1 selection of local maize landraces for low soil nitrogen tolerance in Zambia
March 2010
Low soil nitrogen (N) limits maize production in Zambia. S1 selection was used to select for tolerance to low N among ninety-six maize landraces during 2004 - 2007 in Zambia. The landraces were evaluated under low N, drought and optimal conditions; and selfed in a nursery, under optimal conditions. Data on grain yield (GY), number of ears per plant, leaf senescence and anthesis-silking interval were used...
Genetic variability of some agronomic traits in the Iranian Fenugreek landraces under drought stress and non-stress conditions
February 2010
This study was carried out to assess the genetic diversity and heritability of various agronomic traits using twenty fenugreek landraces from Iran. The trial was conducted at Maragheh experiment station in North-west of Iran under rainfed (RF) and irrigated (IR) conditions during 2008 cropping season. Results of combined analysis of variance showed significant differences among landraces for all traits except for...
Effect of chemical properties of soils on gum elementary compositions from Acacia senegal var. kerensis in Samburu and Marsabit Districts
February 2010
Geographical Positioning System was used to mark the sites of Acacia senegalvar. kerensis in Marsabit and Samburu districts. Soil and gum samples were collected for analysis of pH, carbon, nitrogen and phosphorus. Soil pH (6.0 - 6.7) varied significantly (p < 0.05) with pH of gum (4.54, 4.50, 4.51 and 4.52) in all the sites. In Merrile, organic carbon in gum (0.15%) was significantly...
Virulence of Puccinia triticina on wheat in Iran
February 2010
Wheat leaf rust is controlled mainly by race-specific resistance. To be effective, breeding wheat for resistance to leaf rust requires knowledge of virulence diversity in local populations of the pathogen. Collections of Puccinia triticina were made from rust-infected wheat leaves on the territory of Khuzestan province (south-west) in Iran during 2008 - 2009. In 2009, up to 20 isolates each of the seven most...
Evaluation of antioxidant activity, quantitative estimation of phenols and flavonoids in different parts of Aegle marmelos
January 2010
In existing study, we carried out an efficient record of the comparative antioxidant activity in methanolic extract of the selected parts (leaves, root and stem bark) ofAegle marmelos. Total content of phenol and flavonoid was quantitatively estimated in different parts of A. marmelos. The total phenolic contents varied from 9.8367 ± 0.0235 to 1.7281 ± 0.049 mg g-1. Total flavonoid contents...
Assessment of indigenous knowledge of medicinal plants in Central Zone of Tigray, Northern Ethiopia
January 2010
This research was initiated to document indigenous knowledge associated with traditional medicinal plants; specifically to identify the plant parts used for medicinal purposes and investigate plant species that are used as medicines for the treatment of human health problems. Twelve traditional healers in the study area were interviewed to gather information on the knowledge and use of medicinal plants used...
Phytoextracting cadmium and copper using Mucuna pruriens
December 2009
Mucuna pruriens var pruriens commonly known as Mucuna, a fast-growing, high-biomass-accumulating plant was investigated to underscore its suitability for metal (Cd and Cu) extraction in an oil spill condition. Process enhancement was made using NPK, UREA and Poultry manure fertilizers. These amendments facilitated metals availability in the order PM>NPK>UREA for Cd extraction and PM>UREA >NPK...
Evaluations of the methanol extract of Ficus exasperata stem bark, leaf and root for phytochemical analysis and antimicrobial activities
December 2009
The methanol extract of Ficus exasperata (stem bark, leaf and root) was investigated for activity against some human pathogenic organisms. Phytochemical screening revealed the presence of flavonoids, saponin, tannins, steroids and phlobatannins with no traces of alkaloids and anthraquinones. The results of in vitro antimicrobial screening of the methanol extract exhibited a...
Effect of auxins and auxin polar transport inhibitor (TIBA) on somatic embryogenesis in groundnut (Arachis hypogaea L.)
December 2009
The phytohormone auxin plays an important role in growth, developmental and physiological processes. The effect of auxins, 2,4-D, NAA, IAA, Dicamba and picloram, was tested for somatic embryogenesis in groundnut. Among the different auxins tested 2,4-D favored the best response of somatic embryogenesis with induction of 18.3 somatic embryos per explant that were big, healthy, succulent and green in color....
Stem and leaf anatomy of ten Geranium L. species in Iran
November 2009
An anatomical study on stem and leaf of ten species of Geranium has been performed in order to distinguish tuberous from rhizomatous species. Cross section of stem, number of palisade parenchyma, presence or absence of crystals and shape of epidermal cells in leaf are important characters to distinguish taxa. Key words: Anatomy, Taxonomy, Geraniaceae, Iran.
Antioxidant substances and pesticide in parts of beet organic and conventional manure
November 2009
Organic agriculture together with sustainable management systems are growing in the world due to concerns about the environment and the health of the populace: being real and exhaustively documented the damages caused by pesticides. The aim of this work was to observe the possible differences in the concentrations of free radical scavengers and substances recently classified as functional, in different beet...
An improved method for screening Fusarium stalk rot resistance in grain sorghum [Sorghum bicolor (L.) Moench]
November 2009
Screening for resistance to Fusarium stalk rot under natural infection has been difficult because of irregularities in disease development. The toothpick inoculation technique was introduced to overcome this problem, but it lacked a mechanism to monitor inoculum dose. In this study, we introduce an improved procedure where inoculum doses are monitored and disease incubation periods are optimized....
Gum arabic yield in different varieties of Acacia senegal (L.) Willd in Kenya
November 2009
A comparative study was conducted at four locations namely Ngare Ndare, Daaba, Kulamawe and Ntumburi to assess gum arabic yield per tree per picking for different varieties of natural stands Acacia senegal (var. kerensis; var. senegal and var. leiorhachis) in Kenyan drylands for a period of five months. Sample plots measuring 1 hectare were established, one at each study site....
Studying of essential oil variations in leaves of Mentha species
October 2009
To evaluate the beneficial impacts of different species on mint, some yield characters were investigated. Our objective in this research was the studying of different species effects on essential oil variations. In this respect, the experimental unit had designed by achieved treatment in completely randomized block design with three replicates. The factor including mint species (Mentha longifolia var....
Analysis of phenanthrene biosorption to the roots of Cyperus hermaphroditus by microscopy, spectroscopy and photoacoustic techniques
October 2009
Understanding the process of contaminant accumulation by plants is essential to assessing crop contamination; organic chemicals may be adsorbed to roots and then be taken up, translocated, metabolized, or transpired by plants. The biosorption of phenanthrene by the radical system of Cyperus hermaphroditus,was studied by plants exposed to different concentrations of this pollutant, during 3 and 12...
Evaluation of cowpea genotypes for soil moisture stress tolerance under screen house conditions
October 2009
A potted experiment was conducted in a screen house at the University of Ilorin, Nigeria to evaluate the growth and grain yield responses of 10 genotypes of cowpea to soil moisture stresses. The experiment was designed as a 4 x 10 factorial and laid out in split-plots arrangement, evaluated ten genotypes of cowpea at four soil moisture stress levels with all factorial combinations replicated four times....
Growth parameters of Pistacia atlantica Desf under different soil conditions in Iran
September 2009
Pistacia atlantica Desf. is one of the most important wild species in Zagros forests which is of high economical and environmental value. Therefore the investigation on the vegetative parameters of this native species is necessary. The study was conducted in Shoorab nursery placed in Khoram Abad city, which was located in west of Iran. Experiment was carried out based on randomized plot (block) design...
The structure and function of trichomes in the leaf of Salvia repens Burch. Ex Benth
September 2009
The anatomical investigation using scanning and transmission electron microscopy revealed that Salvia repens is characterized by both non-glandular and glandular trichomes. It has been demonstrated that both trichomes appeared to originate from epidermal cells of the leaf, stem and vegetative area through a series of periclinal and anticlinal division. Non-glandular trichomes were composed of...
Habitat studies for conservation of medicinal orchids of Uttarakhand, Western Himalaya
September 2009
An extensive sampling was conducted for medicinal orchids in the state of Uttarakhand between the years 2003 to 2005 covering an altitudinal range of 600 – 3600 m. Transects of 1 km length were laid randomly in various habitat types depending upon the geographical coverage of the habitats. Six medicinal orchid species belonging to four genera were recorded in different habitats. Dactylorhiza...
Activity concentration of radionuclides in plants in the environment of western Ghats, India
September 2009
A field study on the transfer of primordial radionuclides 238U, 232Th, 40K and fallout radionuclides 210Po in different plant species in tropical forest of western Ghats environment, India, is presented. The Top storey, Short storey, Shrubs and Epiphytic plant species were sampled and concentration of these radionuclides in plant and soil were measured by employing a gamma ray spectrometer...
Diversity and abundance of soil mesofauna and microbial population in South–Western Nigeria
September 2009
The study was carried out to examine the diversity and abundance of soil mesofauna and microbial population in three (3) Forest Reserves in Southwestern Nigeria (Oluwa, Omo and Akure forest reserves). Soil samples were collected from the study areas and the mesofauna present were isolated and identified. The bacteria count and fungi count were also obtained and identified. The pH was also determined likewise...
Litter production, decomposition and physico-chemical properties of soil in 3 developed agroforestry systems of Meghalaya, Northeast India
August 2009
The present study was conducted under 3 developed agroforestry systems that is, Khasi mandarin (Citrus reticulata), Alder (Alnus nepalensis) and Khasi pine (Pinus kesiya) in the state of Meghalaya, northeast India to study the litter dynamics and physico-chemical properties of soil. The findings of our investigation revealed that the soil texture in 3 systems varied from sandy to loamy sand and water...
Genetic differentiation of Senna tora (L.) Roxb. and Senna obtusifolia (L.) Irwin & Barneby by using RAPD markers
August 2009
Genetic relationships were examined among 19 accessions belonging to twoSenna species by using RAPD markers. Within 60 tested primers, 9 primers only produced clear banding patterns that have been expected. An initial test of 60 primers, gave only 9 with consistently clear banding patterns. These 9 primers generated 108 scorable amplified products, of which 72 were polymorphic (66.6%). This degree of...
Improvement of mungbean varieties through induced mutations
August 2009
Mutations were induced in two mungbean varieties, K-851 and PS-16 using EMS and gamma rays as mutagens. Selection studies were conducted to improve the yield and to generate genetic variability in different quantitative traits viz., fertile branches per plant, pods per plant and seed yield per plant. Mean values in traits increase significantly over the controls and genetic parameters were recorded higher for...
Page 15 of 17, showing 50 records out of 807 total, starting on record 701, ending on 750
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