September 2016

Characterisation of Saccharomyces cerevisiae hybrids selected for low volatile acidity formation and the production of aromatic Sauvignon blanc wine

Wine yeasts (Saccharomyces cerevisiae) vary in their ability to develop the full aroma potential of Sauvignon blanc wine due to an inability to release volatile thiols. Subsequently, the use of ‘thiol-releasing’ wine yeasts (TRWY) has increased in popularity. However, anecdotal evidence suggests that some commercially available TRWY intermittently exhibit undesirable characteristics for example, volatile...

Author(s): Hart R.S., Jolly N.P., Mohamed G., Booyse M. and Ndimba B.K.

September 2016

Growth, ectomycorrhization and biochemical parameters of Quercus suber L. seedlings under drought conditions

Drought conditions are the major constraint to the early establishment of Quercus suber species. However, drought responses of this species depend on provenances. The objective of this study was to obtain more comprehensive knowledge on the influence of drought conditions on the response of Q. suber L. seedlings originating from Algeria. Soil water status in soil (SWC) and relative water content (RWC) in leaves,...

Author(s): Henia Daoudi, Arezki Derridj, Lynda Hannachi and Jean Philippe Mevy

September 2016

Coating with fungicide and different doses of fertilizer in vinhatico seeds

Plathymenia reticulata Benth occurs in open formations of the Brazilian Cerrado and Atlantic Forest. The seeds are affected by pathogens that reduce germination. The use of fungicides is defined for many species, but, for forest species, further studies are necessary. Thus, the aim of this study was to evaluate and identify the physical and physiological quality of mahogany seeds that are coated with fertilizer and...

Author(s): Priscila Gonçalves Figueiredo de Sousa, Henrique Duarte Vieira, Mariá Moraes Amorim and Amanda Justino Acha

September 2016

Somatic polyploidization and characterization of induced polyploids of Dioscorea rotundata and Dioscorea cayenensis

Genetic improvement of major food yams is constrained by a number of factors, such as the scarcity of flowers and lack of synchronization between male and female flowering. Consequently, somaclonal variation including somatic polyploidization has been considered as a useful tool in yam breeding. Somatic polyploidization and its effect on phenotypic traits of Dioscorea species such as D. alata, D. japonica and D....

Author(s): Pachakkil Babil, Midori Iino, Yukiko Kashihara, Ryo Matsumoto, Hidehiko Kikuno, Antonio Lopez-Montes and Hironobu Shiwachi

September 2016

Callus induction, direct and indirect organogenesis of ginger (Zingiber officinale Rosc)

The present study aimed to induce callus, direct and indirect organogenesis of ginger (Zingiber officinale Rosc) by using Murashige and Skoog (MS) medium fortified with different concentrations and combinations of growth regulators. Shoot tip, in vitro leaf and root segments were used as explants to induce callus by MS medium containing (0.00 as control, 0.5, 1.00, 2.00 and 3.00 mg/L) of 2,4-dichloro-phenoxyacetic acid...

Author(s): Ammar Mohammed Ahmed Ali, Mawahib ElAmin Mohamed El-Nour and Sakina Mohamed Yagi

September 2016

Antibacterial potential of silver nanoparticle synthesized by marine actinomycetes in reference with standard antibiotics against hospital acquired infectious pathogens

Multi resistance to antibiotics is a serious and disseminated clinical problem, common to several new compounds that block the resistance mechanism. The present study aimed at the comparative study of silver nanoparticles synthesized through actinomycetes and their antimicrobial metabolites with standard antibiotic. Marine actinomycetes collected from Gulf mannar costal region, Kayalpatnam, located at Tuticorin...

Author(s): Mohamed Mahroop Raja M. and Ahmed John S.