African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12485

Table of Content: 26 October, 2016; 15(43)

October 2016

Effect of salt stress on growth and contents of organic and inorganic compounds in noni (Morinda citrifolia L.)

Salinity is one of the abiotic stresses that most affect agricultural production, especially in arid and semi-arid regions; however, among species there are large differences in salt tolerance. In this study, the effects of salinity on the growth and accumulation of organic and inorganic solutes were evaluated in ‘noni’ seedlings at 1, 10, 20, 30 and 40 days of salt stress in a 5 x 2 completely randomized...

Author(s): Alide Mitsue Watanabe Cova, André Dias de Azevedo Neto, Rogério Ferreira Ribas, Hans Raj Gheyi and Renata Velasques Menezes

October 2016

Effect of nitrogen and potassium fertilization on morpho-agronomic traits of three elephant grass (Pennisetum purpureum Schum.) genotypes for biomass production

Elephant grass has been proposed for the energy sector as a possible source of renewable energy, because of its high biomass production. The aim of this study was to evaluate the effect of the mineral nutrients nitrogen and potassium on the morpho-agronomic traits (dry mater yield (DMY), percentage of DM (%DM), number of tillers per linear meter (NT), plant height (PH), stem diameter (SD) and leaf blade width (LW)) in...

Author(s): Antonio Alonso Cecon Novo, Rogério Figueiredo Daher, Geraldo de Amaral Gravina, Ernany Santos Costa, Juares Ogliari, Kleberson Cordeiro Araújo, Bruna Rafaela da Silva Menezes, Niraldo José Ponciano, Érik da Silva Oliveira and Verônica Britos Silva

October 2016

Study of associative effects of date palm leaves mixed with Aristida pungens and Astragalus gombiformis on the aptitudes of ruminal microbiota in small ruminants

The objectives of this trial were to evaluate interactions between microbial degradation of three substrates: date palm leaves as tannin-rich substrate, Astragalus gombiformis (as nitrogen source) and Aristida pungens (as carbon source). The model included the principal effects of single substrate and mixtures of multiple interactions. The forages were fermented alone or mixed with date palm leaves in various...

Author(s): Deffairi Djamila and Arhab Rabah

October 2016

Isolation and characterization of cellulolytic Bacillus licheniformis from compost

Eight cellulose degrading bacteria were isolated from compost and were identified as Bacillus licheniformis by 16S rRNA sequencing. Among the eight isolates, Bacillus licheniformis B4, B7 and B8 showed the highest cellulase activity. B. licheniformis B4 and B8 showed the maximum cellulase activity during the stationary phase of growth; but for B7, the maximum activity of cellulase was observed during the log phase....

Author(s): Nallusamy Sivakumar, Amira Al Zadjali, Saif Al Bahry, Abdulkhadir Elshafie and Elsadig Abdulla Eltayeb

October 2016

Drought tolerant tropical maize (Zea mays L.) developed through genetic transformation with isopentenyltransferase gene

Maize is a staple food crop for millions of Africans. Despite this fact, African farmers have been harvesting average grain yield of not more than 2 t/ha while there is a potential of producing more than 10 t/ha. Drought is one of the major abiotic constraints contributing to this low productivity. Drought diminishes crop productivity mainly by causing premature leaf senescence. The ipt gene codes for...

Author(s): Leta Tulu Bedada, Miccah Songelael Seth, Steven Maina Runo, Wondyifraw Teffera, Charless Mugoya, Clet Wandui Masiga, Richard Okoth Oduor, Eduardo Blumewald and Francis Wachira

October 2016

Transcriptional modulation of genes encoding nitrate reductase in maize (Zea mays) grown under aluminum toxicity

The free aluminum (Al) content in soil can reach levels that are toxic to plants, and this has frequently limited increased productivity of cultures. Four genes encoding nitrate reductase (NR) were identified, named ZmNR1–4. With the aim of evaluating NR activity and the transcriptional modulation of the ZmNR1, ZmNR2, ZmNR3, and ZmNR4 genes in leaves, 30-day-old hybrid maize BRAS 3010 plants were irrigated with a...

Author(s): Talita Cantú, Crislaine Emidio Vieira, Rafaélla David Piffer, Giovanna Carneiro Luiz and Silvia Graciele Hülse de Souza