African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Table of Content: 3 August 2006; 5(15)

August 2006

Developing legal regulatory frameworks for modern biotechnology: The possibilities and limits in the case of GMOs

This paper looks at attempts that have been made to develop legal regulatory frameworks for modern biotechnology. The discussion is limited to the regulation of Genetically Modified Organisms (GMO) technology by the two leading producers and exporters of GMOs in Africa: South Africa and Kenya. The international and regional regulatory regimes are analysed for comparative purposes since the two countries have partially...

Author(s): Andanda, A. Pamela

August 2006

Identification and differentiation of Ficus carica L. cultivars using inter simple sequence repeat markers

Information on germplasm diversity and relationships among elite materials is fundamentally important in crop improvement. The main objectives of our study is to determine the level of genetic diversity inter fig-tree cultivars using inter simple sequence repeat (ISSR) markers. Fifty-seven local Tunisian fig-tree cultivars were fingerprinted with ISSR marker. A total of 33 alleles were detected. A high level of genetic...

Author(s): Ferdaous Guasmi, Ali Ferchichi, Kadija farés, Leila Touil

August 2006

Effect of short day photoperiod on DNA methylation and expression of a gene in rice KDML105

Methylation-sensitive amplified polymorphism (MSAP) technique was adapted to screen a photoperiod-responsive gene of rice KDML105. Six out of thirty-two primer combinations gave twelve EcoRI/HpaII-generated MSAP markers from the genomic DNA of KDML105 after exposure to short-day (SD) photoperiod. These MSAP fragments were cloned and used as probes to hybridize to MSAP fingerprints. Positive fragments generating the...

Author(s): Theerachai Thanananta, Pradit Pongtongkam, Amara Thongpan, Lilly Kaveeta, Surin Peyachoknagul

August 2006

Microbiological examination of milk in Tarakeswar, India with special reference to coliforms

A study was carried out to assess the milk quality in Tarakeswar, India with special reference to coliforms. By standard plate count (SPC) method, out of ten raw milk samples, the microbial colonies were found to be high in six samples and the colony content was low in rest four samples. In pasteurized milk samples, the colonies were low in seven samples and high in three samples. The methylene blue test performed for...


August 2006

Influence of poultry manure and NPK fertilizer on yield and yield components of crops under different cropping systems in south west Nigeria

Field experiments were conducted in two villages (Oniyo and Moloko Ashipa) representing two agro ecologies in the south west area of Nigeria during 2000 and 2001 cropping seasons. The objective was to determine the effects of NPK fertilizer and poultry manure on the yield and yield components in cassava/maize/melon systems. The factors were (1) cropping systems: cassava/maize/melon, sole cassava, sole maize and sole...

Author(s): Ayoola, O. T. and O. N. Adeniyan

August 2006

Surface sterilization and duration of seed storage influenced emergence and seedling quality of African breadfruit (Treculia africana Decne)

The effects of factorial combinations of four storage duration (in days after seed extraction) and surface sterilization with three dilution levels of sodium hypochlorite on seedling emergence and seedling quality of African breadfruit were studied. Storage duration significantly influenced days to seedling emergence, cumulative emergence and seedling quality traits. The effect of sterilization was, however, only...

Author(s): Baiyeri, K. P. and B. N. Mbah

August 2006

Observations on in vitro behaviour of the zygotic axes of fluted pumpkin

Fluted pumpkin, Telfairia occidentalis Hook. f., is an important leaf and seed vegetable and a local medicinal plant across West Africa. Many biological constraints have become potent threats to the existence of the plant necessitating an urgent need to collect and conserve the existing narrow genetic diversity. However, conservation by seed storage is impossible because the seed is recalcitrant, that is...

Author(s): S. Adesola Ajayi, Patricia Berjak, Joseph I. Kioko, M. Ehsan Dulloo and Raymond S. Vodouhe

August 2006

Effects of soilless and soil-based nursery media on seedling emergence, growth and response to water stress of African breadfruit (Treculia africana Decne)

The production of high quality seedlings for orchard and plantation establishment involves several cultural inputs. The quality of potting media perhaps stands out as the most important.  Therefore, the effects of three soilless media and a soil-based medium on seedling emergence, seedling growth and susceptibility to water stress were studied using African breadfruit as a test crop. Most of the seedling parameters...

Author(s): Baiyeri, K. P. and B. N. Mbah

August 2006

Determination of nitrate and nitrite content of Turkish cheeses

The levels of nitrate and nitrite were determined in 185 samples of Turkish cheese having high consumption rate. All cheese samples contained nitrate and its level in Turkish white cheese produced from cow’s and sheep’s milk were found between 0.92 - 22.40 (mean 8.96±4.93) mg/kg and 0.47 - 23.68 (mean 2.35±6.28) mg/kg, respectively. Nitrate level in fresh kasar cheese and mature...

Author(s): Ali Topçu , Aylin Ayaz Topçu , Ilbilge Saldamli and Mine Yurttagül    

August 2006

Distribution of polycyclic aromatic hydrocarbons in rural agricultural wetland soils of the Niger Delta Region

The concentration and distribution of 17 polycyclic aromatic hydrocarbons (PAHs) in some rural agricultural wetland soils of the Niger delta region, Nigeria was determined. There were measurable amounts of naphthalene, acenaphthalene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo-(a)anthracene, chrysene and benzo(b)fluoranthene. Benzo(a)pyrene, benzo-(k)fluoranthene,...

Author(s): P. O. Oviasogie, E. E. Ukpebor and U. Omoti

August 2006

Studies on the quantitative and qualitative characters of cocoons and silk from methoprene and fenoxycarb treated Bombyx mori (L) larvae

Juvenile hormone analogues (JHA s) are known to prolong larval life in insects, and these have been tried for the improvement of silk production in the silkworm,Bombyx mori (L). In the cocoons and silk from 5th  instar B. mori treated with selected doses of methoprene and fenoxycarb, quantitative parameters like cocoon weight, shell weight, shell percentage, filament length and denier followed...

Author(s): D. M. Mamatha,   H. P. P. Cohly, A. H. H. Raju and M. Rajeswara Rao