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: 20 September 2012; 11(76)

September 2012

The status of temporary immersion system (TIS) technology for plant micropropagation

The development of temporary immersion systems (TIS) for in vitro culture, in the late 1990s heralded new and semi-automated means of micropropagation of plants for agricultural and conservation purposes. By 2005, various systems had been developed and tested and their benefits were proven with a variety of commercially-important crops such as sugar-cane, coffee, banana, and yam. Progress in the field and the...

Author(s): M. Paula Watt

September 2012

Phytoremediation of heavy metals: A green technology

The environment has been contaminated with organic and inorganic pollutants. Organic pollutants are largely anthropogenic and are introduced to the environment in many ways. Soil contamination with toxic metals, such as Cd, Pb, Cr, Zn, Ni and Cu, as a result of worldwide industrialization has increased noticeably within the past few years. There are some conventional remediation technologies to clean polluted areas,...

Author(s): P. Ahmadpour, F. Ahmadpour, T. M. M. Mahmud, Arifin Abdu, M. Soleimaniand F. Hosseini Tayefeh

September 2012

Genetic diversity analysis and subspecies classification of Thailand rice landraces using DNA markers

Genetic diversity among 126 rice accessions, including 110 Thai landraces and 16 varieties used as subspecies reference, were evaluated by three types of DNA markers, InDel (Insertion/Deletion), inter-simple sequence repeat (ISSR) and simple sequence repeat (SSR) markers. Twelve InDel primer pairs, based on DNA sequence polymorphism between ‘93-11’ (indica) and ‘Nipponbare’ (japonica), were used...

Author(s): Maytinee Kladmook, Tanavadee Kumchoo and Vipa Hongtrakul,

September 2012

Additional insights into the adaptation of cotton plants under abiotic stresses by in silico analysis of conserved miRNAs in cotton expressed sequence tag database (dbEST)

Abiotic stress is the primary cause of crop losses worldwide. In addition to protein coding genes, microRNAs (miRNAs) have emerged as important players in plant stress responses. Though miRNAs are key in regulating many aspects of plant developmental plasticity under abiotic stresses, very few information are available in cotton. Hence, this study was conducted to identify the phylogenetically conservedmiRNAs...

Author(s): N. Manikanda Boopathi and R. Pathmanaban

September 2012

Heavy metals and nutritional composition of some selected herbal plants of Soon Valley, Khushab, Punjab, Pakistan

Herbal plants and their extracts deserve special attention because of the important influence they have on human health. For the majority of the world population, herbal plants represent the primary source of the health care. According to the World Health Organization (WHO) report, almost 80% of people in marginal communities use only herbal plants for the treatment of various diseases. Although, the effectiveness of...

Author(s): Abdul Ghani, Sadia Saeed, Zulfiqar Ali, Iftikhar Ahmad, and Muhammad Ishtiaq

September 2012

Effectiveness of tissue culture media components on the growth and development of cauliflower (Brassica oleracea var. Botrytis) seedling explants in vitro

A key factor in the application of in vitro techniques to cauliflower improvement is the development of efficient protocols for regeneration of plants from tissue for use in breeding programs for the selection of the desirable genotypes under biotic and abiotic stress. Experiments were conducted to study the effect of different media components (agar or agar + sucrose or agar + Murashige and Skoog (MS) salts...

Author(s): Ehab M. R. Metwali, and Omar A. Al-Maghrabi

September 2012

Shoot multiplication of Paphiopedilum orchid through in vitro cutting methods

Paphiopedilum orchids are generally propagated through the division of axillary buds from mother plant, which limits commercial production due to its unproductive proliferation and time consuming. In this study, the effect of in vitro cutting methods and medium composition on efficient shoot multiplication of Paphiopedilum Hsinying Rubyweb was investigated. Among three different in...

Author(s): Waraporn Udomdee, Pei-Jung Wen, Shih-Wen Chin and Fure-Chyi Chen

September 2012

Comparative study of the antifungal activity of some essential oils and their major phenolic components against Aspergillus niger using three different methods

This study aimed to evaluate the antimould activity of oregano, thyme, rosemary and clove essential oils and some of their main constituents: eugenol, carvacrol and thymol against Aspergillus niger. This antifungal activity was assessed using broth dilution, disc diffusion and micro atmosphere methods. In both agar diffusion and micro atmosphere tests, all the investigated agents showed no inhibitory...

Author(s): Latifa BOUDDINE, Bouchra LOUASTE, Sanaa ACHAHBAR, Najat CHAMI, Fouzia CHAMI and Adnane REMMAL

September 2012

Biochemical and microstructural characteristics of meat samples treated with different plant proteases

This study was conducted to compare the efficiency of different plant proteases for changing biochemical and microstructural characteristics in muscle foods. The meat samples from chicken, giant catfish, pork and beef were treated with four types of proteolytic enzymes: Calotropis procera latex proteases, papaya latex proteases, commercial papain and bromelain at the concentrations of 2 × 103 to 6...

Author(s): Saroat Rawdkuen and Soottawat Benjakul

September 2012

Lipolytic activity and chilling requirement for germination of some almond cultivars

Traditionally, cold stratification for three weeks is commonly used for almonds (Prunus amygdalus Mill.) seeds germination. In this study, the effect of cold stratification in two almonds varieties: ‘‘Achaak’’ a Tunisian cultivar and ‘‘Tuono’’ an Italian cultivar was tested. The study revealed, for the first time, that only the Tunisian cultivar...

Author(s): Sellema BAHRI

September 2012

Growth response and nutrient digestibility of pre-pubertal rabbit bucks fed cottonseed cake-based diets supplemented with vitamin E

A study was conducted to investigate the growth response and nutrient digestibility in rabbit bucks fed cottonseed cake (CSC)-based diets supplemented with vitamin E. 64 weanling rabbit bucks, aged five to six weeks and weighing averagely 511.28 g were involved in the study. The bucks were randomly allocated to eight treatment combinations comprising four levels (0, 5, 10 and 15%) of CSC and two levels (0 and 30 mg/kg...

Author(s): Amao, O. A., Adejumo, D. O., Togun, V. A. and Oladunjoye, I. O.

September 2012

Analysis of productivity, longevity and culling causes of Jersey and Polish holstein-friesian (PHF) cows

The analyzed population comprised 970 Polish holstein-friesian cows (PHF) and 372 Jersey cows. The database provided pedigree information on dams and their productivity. Differences between breeds in terms of longevity and culling reasons were investigated. For the group of PHF cows, the average age of culling was 5.2 years, while for Jersey cows, it was 4.81 years. In the PHF group, for the main cause of culling, about...

Author(s): Anna Nienartowicz-Zdrojewska, Jolanta RóżaÅ„ska-Zawieja, IreneuszDymarski, Anna Konieczka and Zbigniew Sobek