African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12218

Table of Content: 15 November 2010; 9(46)

November 2010

Comparison of multiple-trait genetic evaluation accuracy using region marker relationships with traditional best linear unbiased prediction (BLUP)

  Accuracy of multiple-trait genetic evaluation based on allelic relationships with traditional best linear unbiased prediction (BLUP) was compared through computer simulation. Firstly, a base population (N = 100) was simulated; the population was half male/half female. After reaching linkage disequilibrium between marker and QTL, phenotypic and genotypic records were simulated for the last generation. For each...

Author(s): Mahboubeh, Rostami-Angasi , Ardeshir, Nejati-Javaremi, Hassan, Mehrabani-Yeganeh, Mohammad. Moradi-Shahrebabak

November 2010

Identification of a partial oil palm polygalacturonase-inhibiting protein (EgPGIP) gene and its expression during basal stem rot infection caused by Ganoderma boninense

  Basal stem rot disease (BSR) is a common and serious fungal disease of the oil palm caused by Ganoderma boninense. This fungal disease infects thousands of hectares of plantings in Southeast Asia every year causing not only yield but also tree losses. A natural plant self defence mechanism against fungal infection is the production of fungal resistance protein. A fungal resistance...

Author(s):   Jameel R. Al-Obaidi, Yusmin Mohd -Yusuf, Tey Chin-Chong, Normahnani Mhd-Noh, Rofina Yasmin Othman,  

November 2010

Study of genomic fingerprints profile of Magnaporthe grisea from finger millet (Eleusine Coracona) by random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR)

  Finger millet (Eleusine coracana (L) Gaertn (FM) is a major food for resource poor farmers in several parts of India as well as the world. Blast caused by heterothallic ascomycete Magnaporthe grisea (Hebert) Barr. (Anamorph: Pyricularia grisea) is the most important constraint to finger millet production in most finger millet growing environments. The pathogen also causes the catastrophic...

Author(s): Yogendra Singh, and J. Kumar

November 2010

Genetic diversity and demographic history of wild Yak (Bos grunniens mutus) inferred from mtDNA D-loop sequences

  The wild yak (Bos grunniens mutus) is considered as one of the endangered species. To provide useful information for conservation and utilization of this species, we investigated the genetic diversity and demographic history of wild yak by analyzing a 637 bp hypervariable fragment of 21 mitochondrial DNA (mtDNA) D-loop sequences including six sequenced in this study and 15 downloaded from GenBank. Forty-five...

Author(s):   Zhijie Ma, Jincheng Zhong, Jianlin Han, Jintao Xu, Wenlin Bai, Jiye Li, Dongzhi Cairang, Xinyan Jin and Jun Zhang  

November 2010

Identification of amplified fragment length polymorphism (AFLP) fragments linked to soybean mosaic virus resistance gene in Glycine soja and conversion to a sequence characterized amplified regions (SCAR) marker for rapid selection

  Soybean mosaic virus (SMV) is a prevalent pathogen that cause yield losses and reduce seed quality in soybean production areas worldwide. Glycine soja is the wild ancestor of domesticated soybean and a potential source of new SMV resistance genes (Rsv). In this study, we applied a combination of the amplified fragment length polymorphism (AFLP) technique and bulked segregant analysis (BSA) to...

Author(s): Kaisheng Li and Yueping Cao

November 2010

Morphological consequences of hybridization in two interbreeding taxa: Kurdish Wheatear (Oenanthe xanthoprymna) and Persian Wheatear (O.chrysopygia) in western Iran

  Morphological consequences of hybridization were studied in two interbreeding taxa of genus Oenanthe. The breeding ranges of Kurdish Wheatear (Oenanthe xanthoprymna ) and Persian Wheatear (O.chrysopygia ) overlap in west and north west of Iran where intermediate color variants can be found. Field works were carried out in May 2006 and 2007 inside and outside of contact zone. We...

Author(s): Atefeh Chamani, Mohammad Kaboli, Mahmoud Karami, Mansour Aliabadian, Eric Pasquet and Roger Prodon  

November 2010

Evaluation of grain yield and quality of barley varieties under rainfed conditions

This study was carried out in 2002 to 2003 and 2003 to 2004 seasons at the experimental area of Elazığ Agriculture Provincial Directorate in Turkey to investigate the genetic and environmental variation of grain yield and some quality traits of 21 barley cultivars. Grain yield, hectoliter weight (HLW), thousand grain weight (TGW), coarse grain and protein content were investigated in the trial. The analysis of the...

Author(s):   Hasan Kılıç, Taner Akar, Enver Kendal and İsmail Sayım  

November 2010

Antiradical capacity and reducing power of different extraction method of Areca catechu seed

  Areca catechu is a common traditional Chinese medicinal plant used to treatdyspepsia, constipation, beriberi and oedema. The antiradical capacities of different extraction method of A. catechu extracts were evaluated by scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide radicals. Reducing power, total phenolic and...

Author(s):   Chia-Ching Li  and En-Shyh Lin   

November 2010

Attenuation of salt-induced changes in photosynthesis by exogenous nitric oxide in tomato (Lycopersicon esculentum Mill. L.) seedlings

  Exogenous sodium nitroprusside (SNP), a NO donor, was applied in this study to investigate the potential role of NO in photosynthetic performance of tomato (Lycopersicon esculentum L. cv. Hufan2560) seedlings under salt-stressed conditions. Exogenous NO alleviated the decrease in dry mass of shoot and root caused by salt stress. In parallel, NO application in salt-stressed plants attenuated the decrease...

Author(s):   Xue-Xia Wu, Hai-Dong Ding, Jian-Lin Chen, Hong-Juan Zhang and Wei-Min Zhu,  

November 2010

Assessment of variable application rates of biological amendment substances on establishment and growth characteristics of maize plants

  Good plant establishment and excellent vigour constitute essential pre-requisites for successful grain production. The sowing of good viable seeds could contribute to increased productivity and ultimately lead to minimal seed cost and high return on investment. These are however dependent on such factors as the possible effects of pre- and post-seed sowing soil amendments. Hence, a greenhouse experiment was...

Author(s):   Baloyi, T. C., Kutu, F. R. and Du Preez, C. C.  

November 2010

Study of correlation among yield related traits and path coefficient analysis in rice (Oryza sativa L.)

  In order to determine the associations among yield components and their direct and indirect influence on grain yield of rice, an experiment was conducted. For this purpose, 30 genotypes collected from different sources were tested in a randomized complete block design. The phenotypic correlations among the yield traits and their path coefficient were estimated. Grain yield was significantly correlated with...

Author(s): Javed Iqbal Wattoo, Abdus Salam Khan, Zulfiqar Ali, Muhammad Babar, Muhammad Naeem, Muhammad Aman ullah and Nazim Hussain  

November 2010

Selection studies on fig (Ficus carica L.) in Antalya Province of Turkey

  Turkey is one of the gene centers of fig in the world and there are great variations and distributions in wild fig forms as well as fig cultivars. The primary objective of this study is to select valuable fig genetic resources in Ibradi and Kumluca (Antalya) province and to conserve the promising figs genetic resources. Populations consisting of native fig genotypes were selected and chracterized in terms of...

Author(s): S. Gozlekci

November 2010

Assessment of heavy metal exposure around auto body refinishing shops

  Significant number of occupations are present in our society which involves metal pollution. These small operational occupations which are always neglected by governments and other occupational health services are another major factor of metal flow in urban soil. The local auto body refinishing shops are one of these occupations. Workers, soil, plants, air and all environments around these shops are...

Author(s):   Hajira Tahir, Qazi JahanZeb and Muhammad Sultan  

November 2010

Correlation of photothermal quotient with spring wheat yield

  The effect of photothermal quotient at anthesis and maturity on kernel m-2, kernel weight (KW) and kernel yield were examined in experiments involving three different genotypes such as: Chakwal-50, Wafaq-2001 and GA-2002 sown at five different sowing times (Planting windows) for two years (2008-09 and 2009-10) at the National Agricultural Research Center (NARC) Islamabad.  Photothermal quotient (PTQ) was...

Author(s): Mukhtar Ahmed, Fayyaz-ul-Hassan, M. Asim, M. Aqeel Aslam and Mustazhar Nasib Akram

November 2010

An investigation on the yield and quality performances of some rotation pasture mixtures under different harvest treatments

This rotation pasture study was conducted in the experimental fields of Field Crops Department of Agriculture Faculty in Ege University, Bornova, Izmir-Turkey under Mediterranean climatic conditions in the years 2004/05. Two grasses (Festuca arundinacea and Cynodon dactylon) and three legumes (Medicago sativa,Trifolium repens and Lotus corniculatus) were sown at different rates of mixtures in the...

Author(s):   Gulcan  Demiroglu, Behcet Kir, Riza Avcioglu and Hakan Geren  

November 2010

The potential of whey in driving microbial fuel cells: A dual prospect of energy recovery and remediation

  Renewable and green energy resources are paramount to environmental sustainability. Microbial fuel cells (MFCs) are potential candidates for these alternatives but there is need to search for cheaper fuels to drive the MFCs for realistic large scale applications. A high strength effluent such as whey, which poses a serious environmental threat, is a good candidate for fueling the MFCs with an added advantage...

Author(s): J. Kassongo and C. A. Togo

November 2010

Physio-chemical characteristics and bacterial diversity in copper mining wastewater based on 16S rRNA gene analysis

  The effects of seasonal change in temperature on the chemical compositions of water and bacterial diversity in copper mining wastewater reservoir (CMWR) located in Jiangxi province, China, was investigated. Wastewater samples were collected collected in December 2008 and May 2009 from different points of CMWR and analyzed for anions, heavy metals, and microbial community structure using standard procedures....

Author(s): Islam-ud-din, Sardar Khan, Abd El-latif Hesham, Ayaz Ahmad, Su Houbo and Cang Daqiang

November 2010

Improving phylogenetic inference of microsporidian Nosema antheraeae among Nosema species with RPB1, α-and β-tubulin sequences

  The microsporidian Nosema antheraeae is an intracellular parasite that infects the Chinese oak silkmoth, Antheraea pernyi. However, its phylogenetic position among the Nosema isolates is not yet clear. For a better understanding of the phylogenetic relationships between Nosema species, the RPB1, α-tubulin and β-tubulin genes of N. antheraeae were...

Author(s): Jinshan Xu and Zeyang Zhou,

November 2010

The effect of aflatoxin levels on milk production, reproduction and lameness in high production Holstein cows

  The aim of this study is to investigate the effect of aflatoxin levels in diet on milk production and composition, reproduction problems and indices and lameness in dairy cattle. To determine the levels of total aflatoxin and B1, B2, G1 and G2 in the feedstuff and M1 in the milk, samples from two different dairy farms; A, low aflatoxin level (13.01 µg/kg) and B, high aflatoxin level...

Author(s):   Akbar Pirestani and Majid Toghyani  

November 2010

Organic and conventional production systems, microbial fertilization and plant activators affect tomato quality during storage

A common belief among consumers is the superior quality of organically grown tomato fruits over their conventionally grown counterparts. The present study was performed to evaluate the quality characteristics of tomatoes grown using organic and conventional production systems and to determine the effects of microbial fertilization and plant activators on the tomato fruit quality during storage. Results indicated that...

Author(s):   Husnu Unlu, Halime Ozdamar Unlu, Yasar Karakurt and Huseyin Padem  

November 2010

Partial characterization of extracellular cold-adaptive a-amylolytic activity produced by the Antarctic bacterial isolate, Flavobacterium sp. PCK1

An Antarctic bacterial isolate was found to show extracellular a-amylolytic activity. Based on 16S rRNA sequence analysis, the strain was named Flavobacterium sp. PCK1. The optimal activity of the amylase occurred at 30°C and pH 6.0. The enzyme was highly specific for soluble starch with no activity on other polysaccharides tested, and it exhibited endoamylolytic activity on chromogenic substrates...

Author(s):   Inkyung Park and Jaiesoon Cho,  

November 2010

Influence of starter culture of lactic acid bacteria on the shelf life of agidi, an indigenous fermented cereal product

  A total of eight lactic acid bacteria were isolated from various fermented  cereal gruels (ogi). They were identified as Lactobacillus plantarum, Lactobacillus casei,Leuconostoc mesenteroides, Lactobacillus brevis, Lactobacillus fermentum,Lactobacillus delbrueckii, Lactobacillus...

Author(s): K. S. Dike and A. I. Sanni  

November 2010

X-ray diffraction study of kanwa used as active ingredient in achu soup in Cameroon

  In this study, x-ray powder diffractometry (XRPD) technique was used to identify the mineral constituents of kanwa; an earthy material widely used as active ingredient in achu soup and other vegetable soups in Cameroon and several other West African countries. Results depicted trona (Na3H (CO3)2.2H2O) to be the main mineral constituent. It reacts...

Author(s): Georges-Ivo E. Ekosse

November 2010

Alterations in serum lipid, lipoprotein and visceral abdominal fat pad parameters of hypercholestrolemic guinea pigs in response to short term garlic consumption

  Commercially available garlic preparation in the form of garlic oil, garlic powder and pills are widely used for certain therapeutic purposes, including lowering blood pressure and improving lipid profile. The aim of the present study was to determine short term effects of dietary consumption of garlic on the serum levels of triglyceride (TG), total cholesterol (TC), high density lipoprotein cholesterol...

Author(s):   Malihe Pourkabir, Tahora Shomali and Farzad Asadi  

November 2010

Calcium-induced stabilization of α-amylase against guanidine hydrochloride denaturation

  Guanidine hydrochloride (GdnHCl) denaturation of native and Ca-depleted Bacillus licheniformis α-amylase (BLA) was investigated both in the absence and presence of 2 mM calcium chloride (CaCl2) using circular dichroism, fluorescence spectroscopy and biological activity. In both states (Ca-depleted and native form), the protein was denatured to a considerable extent in the absence of 2 mM...

Author(s):   Cheau Yuaan Tan, Raja Noor Zaliha binti Raja Abdul Rahman, Habsah Abdul Kadir and Saad Tayyab  

November 2010

Antimicrobial potential of the phytoextracts of some Nyctaginaceae members

  The emergence of drug resistant pathogens is becoming a serious threat to humanity and has necessitated the search for new antimicrobial drugs. The present study was done to evaluate the potential antimicrobial efficacy of some common members of Nictagenaceae against four bacterial strains; Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Proteus vulgaris. ...

Author(s):   Mukesh Sharma, Vimal Mohan, Maneesha Abraham and Meenakshi Sharma  

November 2010

Evaluation of antioxidant potential of medicinal plants from Malaysian Rubiaceae (subfamily Rubioideae)

  This paper evaluates the antioxidant potential of 22 species of medicinal plants from Malaysian Rubiaceae. The ferric thiocyanate (FTC), thiobarbituric acid (TBA), total phenolic content (TPC) and the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays were employed. The tested extracts showed strong antioxidant potential when compared to butylated hydroxytoluene (BHT), quercetin and vitamin E with percent inhibition...

Author(s): Ahmad R., Mahbob E. N. M., Noor Z. M., Ismail N. H., Lajis, N. H. and Shaari K.

November 2010

Morphometry and diet of Chrysichthys nigrodigitatus (Lacépède) in Epe Lagoon, Nigeria

  The morphometry and diet of Chrysichthys nigrodigitatus in Epe lagoon were investigated between January and July 2008. The major fishing methods employed for collecting the 600 specimens were cast netting and set netting. The total lengths ranged from 11.00 to 30.20 cm (mean size 19.67 ± 4.56 cm) while the standard lengths ranged from 8.30 to 24.50 cm (mean size 15.09 ± 3.39 cm).The...

Author(s):   Muyideen O. Lawal, Oluwabamise J. Sangoleye and Bola M. Seriki  

November 2010

Characterization of Botrytis cinerea isolates from chickpea: DNA polymorphisms, cultural, morphological and virulence characteristics

  Eight isolates of Botrytis cinerea, causal organism of chickpea from eight different locations of western and eastern Indo-Gangetic Plains (IGP) of India were analyzed for morphological, cultural, virulence and genetic variations.  Characterization of virulence and genetic variations of the isolates was based on their pathogenicity against 40 selected chickpea genotypes and randomly...

Author(s):   Suresh Pande, Mamta Sharma, G. Krishna Kishore, L. Shivram and U. Naga Mangala  

November 2010

Antiviral activity of the extracts of Rhodophyceae from Morocco

Fifty-five aqueous, methanolic, chloroforme-methanolic and dichloromethanolic extracts derived from sixteen species of marine Rhodophyta from the coast of Morocco have been screened for the presence of inhibitory compounds against Herpes simplex virus type 1 (HSV-1) by cell viability method. The aqueous extracts of Asparagopsis armata, Ceramium rubrum, Gelidium pulchellum, Gelidium...

Author(s): Bouhlal Rhimou, Riadi Hassane and Bourgougnon Nathalie